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micropower step-up/step-down fixed 3.3 v, 5 v, 12 v, adjustable high frequency switching regulator adp3000 rev. a information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent ri ghts of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.326.8703 ? 2004 analog devices, inc. all rights reserved. features operates at supply voltages from 2 v to 30 v works in step-up or step-down mode very few external components required high frequency operation up to 400 khz low battery detector on-chip user-adjustable current limit fixed and adjustable output voltage 8-lead pdip, 8-lead soic, and 14-lead tssop packages small inductors and capacitors applications notebook, palmtop computers cellular telephones hard disk drives portable instruments pagers general description the adp3000 is a versatile step-up/step-down switching regulator. it operates from an input supply voltage of 2 v to 12 v in step-up mode, and from 2 v to 30 v in step-down mode. operating in pulse frequency mode (pfm), the device consumes only 500 a, making it ideal for applications requiring low quiescent current. it delivers an output current of 180 ma at 3.3 v from a 2 v input in step-up mode, and an output current of 100 ma at 3 v from a 5 v input in step-down mode. the adp3000 operates at 400 khz switching frequency. this allows the use of small external components (inductors and capacitors), making it convenient for space-constrained designs. the auxiliary gain amplifier can be used as a low battery detector, linear regulator, undervoltage lockout, or error amplifier. functional block diagrams comparator gain block/ error amp 400khz oscillator driver 1.245v reference r1 r2 adp3000 set v in gnd sense a0 i lim sw1 sw2 a1 00122-001 figure 1. adp3000-3.3v i lim v in sw1 fb (sense) sw2 gnd + 100 f 10v 120v 6.8 h in5817 c1 100 f 10v v in 2v to 3.2v 3.3v 180ma c1, c2 = avx tps d107 m010r0100 l1 = sumida cr43-6r8 00122-002 3 2 4 1 5 8 figure 2. typical application adp3000 i lim v in sw1 fb sw2 gnd c1 100 f 10v r lim 120 ? l1 10 h v in 5v to 6v c1, c2 = avx tps d107 m010r0100 l1 = sumida cr43-100 + d1 1n5818 c l 100 f 10v r2 150k ? 1% r1 110k ? 1% v out 3v 100ma 00122-003 3 8 4 5 1 2 figure 3. step-down mode operation obsolete
adp3000 rev. a | page 2 of 16 table of contents specifications..................................................................................... 3 absolute maximum ratings............................................................ 4 esd caution.................................................................................. 4 pin configurations and function descriptions ........................... 5 typical performance characteristics ............................................. 6 theory of operation ........................................................................ 9 applications information .............................................................. 10 component selection................................................................. 10 programming the switching current limit............................ 10 programming the gain block................................................... 11 power transistor protection diode in step-down configuration ............................................................................. 11 thermal considerations............................................................ 11 typical application circuits ......................................................... 13 outline dimensions ....................................................................... 15 ordering guide .......................................................................... 16 revision history 9/04data sheet changed from rev. 0 to rev. a added ru-14 package ................................................. universal changes to table 4.....................................................................10 changes to table 5.....................................................................10 updated outline dimensions ..................................................15 changes to ordering guide .....................................................16 1/97revision 0: initial version obsolete
adp3000 rev. a | page 3 of 16 specifications 0c t a +70c, v in = 3 v, unless otherwise noted. 1 table 1. adp3000 parameter conditions symbol min typ max unit input voltage step-up mode v in 2.0 12.6 v step-down mode 30.0 v shut-down quiescent current v fb > 1.43 v; v sense > 1.1 v out i q 500 a comparator trip point voltage adp3000 2 1.20 1.245 1.30 v output sense voltage adp3000-3.3 3 v out 3.135 3.3 3.465 v adp3000-5 3 4.75 5.00 5.25 v adp3000-12 3 11.40 12.00 12.60 v comparator hysteresis adp3000 8 12.5 mv output hysteresis adp3000-3.3 32 50 mv adp3000-5 32 50 mv adp3000-12 75 120 mv oscillator frequency f osc 350 400 450 khz duty cycle v fb < v ref d 65 80 % switch-on time i lim tied to v in , v fb = 0 t on 1.5 2 2.55 s switch saturation voltage t a = +25c v sat step-up mode v in = 3.0 v, i sw = 650 ma 0.5 0.75 v v in = 5.0 v, i sw = 1 a 0.8 1.1 v step-down mode v in = 12 v, i sw = 650 ma 1.1 1.5 v feedback pin bias current adp3000 v fb = 0 v i fb 160 330 na set pin bias current v set = v ref i set 200 400 na gain block output low i sink = 300 a, v set = 1.00 v v ol 0.15 0.4 v reference line regulation 5 v v in 30 v 0.02 0.15 %/v 2 v v in 5 v 0.2 0.6 %/v gain block gain r l = 100 k? 4 a v 1000 6000 v/v gain block current sink v set 1 v i sink 300 a current limit 220 ? from i lim to v in i lim 400 ma current limit temperature coefficient ?0.3 %/c switch-off leakage current measured at sw1 pin 1 10 a v sw1 = 12 v, t a = +25c maximum excursion below gnd t a = +25c i sw1 10 a, switch off ?400 ?350 mv 1 all limits at temperature extremes are guaranteed via corr elation using standard statistical methods. 2 this specification guarantees that both the high and low trip po ints of the comparator fall within the 1.20 v to 1.30 v range. 3 the output voltage waveform will exhibit a saw-tooth shape due to the comparator hysteresis. the output voltage on the fixed ou tput versions will always be within the specified range. 4 100 k? resistor connected between a 5 v source and the ao pin. obsolete
adp3000 rev. a | page 4 of 16 absolute maximum ratings table 2. parameter rating input supply voltage, step-up mode 15 v input supply voltage, step-down mode 36 v sw1 pin voltage 50 v sw2 pin voltage ?0.5 v to v in feedback pin voltage (adp3000) 5.5 v switch current 1.5 a maximum power dissipation 500 mw operating temperature range 0c to +70c storage temperature range ?65c to +150c lead temperature (soldering, 10 s) 300c thermal impedance r-8 170c/w ru-14 150c/w n-8 120c/w stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. esd caution esd (electrostatic discharge) sensitive device. electrostatic charges as high as 4000 v readily accumulate on the human body and test equipment and can discharge without detection. although this product features proprietary esd protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discha rges. therefore, proper esd precautions are recommended to avoid performance degradation or loss of functionality. obsolete
adp3000 rev. a | page 5 of 16 pin configurations and function descriptions 00122-004 i lim 1 v in 2 sw1 3 sw2 4 fb (sense)* 8 set 7 ao 6 gnd 5 *fixed versions adp3000 top view (not to scale) figure 4. 8-lead plastic dip (n-8) 00122-035 1 2 3 4 5 6 7 adp3000 top view (not to scale) nc = no connect nc ilim vin sw2 nc sw1 nc 14 13 12 11 10 9 8 fb set ao gnd nc nc nc figure 5. 14-lead tssop (ru-14) 00122-005 adp3000 top view (not to scale) i lim 1 v in 2 sw1 3 sw2 4 fb (sense)* set ao gnd 8 7 6 5 *fixed versions figure 6. 8-lead soic (r-8) table 3. pin function descriptions nemonic function i lim for normal conditions, connect to v in . when lower current is required, connect a resistor between i lim and v in . to limit the switch current to 400 ma, connect a 220 ? resistor. v in input voltage. sw1 collector of power transistor. for step-down configuration, connect to v in . for step-up configuration, connect to an inductor/diode. sw2 emitter of power transistor. for step-down conf iguration, connect to inductor/diode. for step-up configuration, connect to ground. do not allow pin to go more than a diode drop below ground. gnd ground. ao auxiliary gain block (gb) output. ope n collector can sink 300 a. this pin can be left open if not used. set auxiliary gain amplifier input. the amplifiers posi tive input is connected to th e set pin, and its negative input is connected to the 1.245 v reference. this pin can be left open if not used. fb/sense on the adp3000 (adjustable) ver sion, this pin is connected to the comparator input. on the adp3000-3.3, the adp3000-5, and the adp3000-12, the pin goes directly to the internal resistor divider that sets the output voltage. 00122-006 comparator gain block/ error amp oscillator driver 1.245v reference adp3000 set v in gnd fb a0 i lim sw1 sw2 a2 a1 figure 7. functional block diagram for adjustable version 00122-007 comparator gain block/ error amp oscillator driver 1.245v reference r1 r2 adp3000 set v in gnd sense a0 i lim sw1 sw2 a1 figure 8. functional block diagram for fixed version obsolete
adp3000 rev. a | page 6 of 16 typical performance characteristics 00122-008 switch current (a) 1.5 0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 on voltage (v) 2.5 2.0 1.5 1.0 0.5 0 v in = 2v @ t a = 25c v in = 3v @ t a = 25c v in = 5v @ t a = 25c figure 9. switch-on voltage vs. switch current in step-up mode 00122-009 switch current (a) 0.9 0.1 0.2 0.3 0.4 0.5 0.6 0.8 v ce(sat) (v) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 v in = 12v @ t a = 25c v in = 5v @ t a = 25c figure 10. saturation voltage vs. switch current in step-down mode 00122-010 input voltage (v) 30 1.5 3.0 6 9 12 15 18 21 24 27 quiescent current ( a) 1400 1200 1000 800 600 400 200 0 quiescent current @ t a = 25c figure 11. quiescent current vs. input voltage 00122-011 input voltage (v) 30 246810121518212427 oscillator frequency (khz) 406 404 405 402 403 401 400 399 398 oscillator frequency @ t a = 25c figure 12. oscillator frequency vs. input voltage 00122-a-012 r lim ( ? ) 1k 1 10 100 switch current (a) 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 t a = 25c t a = 0c t a = 85c v in = 5v figure 13. maximum switch current vs. r lim in step-down mode (5 v) 00122-013 r lim ( ? ) 1k 1 10 100 switch current (a) 1.8 1.4 1.6 0.8 1.0 1.2 0.6 0.4 0.2 0 t a = 25c t a = 85c t a = 0c v in = 12v figure 14. maximum switch current vs. r lim in step-down mode (12 v) obsolete
adp3000 rev. a | page 7 of 16 00122-014 r lim ( ? ) 1k 1 10 100 switch current (a) 1.8 1.4 1.6 0.8 1.0 1.2 0.6 0.4 0.2 0 t a = 85c t a = 0c t a = 25c v in = 3v figure 15. maximum switch current vs. r lim in step-up mode (3 v) 00122-015 temperature (c(t a )) 85 ?40 0 25 70 oscillator frequency (khz) 440 430 420 410 400 390 380 370 360 350 340 330 figure 16. oscillator frequency vs. temperature 00122-016 temperature (c(t a )) 85 ?40 0 25 70 on time ( s) 2.30 2.25 2.20 2.15 2.10 2.05 2.00 1.90 1.85 1.95 1.80 figure 17. switch-on time vs. temperature 00122-017 temperature (c(t a )) 85 ?40 0 25 70 duty cycle (%) 100 90 80 70 60 50 0 40 30 20 10 figure 18. duty cycle vs. temperature 00122-018 temperature (c(t a )) 85 ?40 0 25 70 saturation voltage (v) 0.56 0.52 0.54 0.50 0.48 0.46 0.44 0.42 v in = 3v @ i sw = 0.65a figure 19. saturation voltage vs. temperature in step-up mode 00122-019 temperature (c(t a )) 85 ?40 0 25 70 on voltage (v) 1.25 1.20 1.15 1.10 1.05 1.00 0.95 0.90 v in = 12v @ i sw = 0.65a figure 20. switch-on voltage vs. temperature in step-down mode obsolete
adp3000 rev. a | page 8 of 16 00122-020 temperature (c(t a )) 85 ?40 0 25 70 bias current (na) 250 200 150 100 50 0 figure 21. feedback bias current vs. temperature 00122-021 temperature (c(t a )) 85 ?40 0 25 70 quiescent current ( a) 700 600 500 400 300 200 100 0 v in = 20v figure 22. quiescent current vs. temperature 00122-022 temperature (c(t a )) 85 ?40 0 25 70 bias current (na) 350 300 250 200 150 100 50 0 figure 23. set pin bias current vs. temperature obsolete
adp3000 rev. a | page 9 of 16 theory of operation the adp3000 is a versatile, high frequency, switch mode power supply (smps) controller. the regulated output voltage can be greater than the input voltage (in boost or step-up mode) or less than the input voltage (in buck or step-down mode). this device uses a gated oscillator technique to provide high performance with low quiescent current. figure 7 is a functional block diagram of the adp3000. the internal 1.245 v reference is connected to one input of the comparator, and the other input is externally connected (via the fb pin) to a resistor divider, which is connected to the regulated output. when the voltage at the fb pin falls below 1.245 v, the 400 khz oscillator turns on. the adp3000 internal oscillator typically provides a 1.7 s on time and a 0.8 s off time. a driver amplifier provides base drive to the internal power switch, and the switching action raises the output voltage. when the voltage at the fb pin exceeds 1.245 v, the oscillator shuts off. while the oscillator is off, the adp3000 quiescent current is only 500 a. the comparators hysteresis ensures loop stability without requiring external components for frequency compensation. the maximum current in the internal power switch is set by connecting a resistor between v in and the i lim pin. when the maximum current is exceeded, the switch is turned off. the current limit circuitry has a time delay of about 0.3 s. if an external resistor is not used, connect i lim to v in . this yields the maximum feasible current limit. further information on i lim is included in the applications information section. an uncommitted gain block on the adp3000 can be connected as a low battery detector. the inverting input of the gain block is internally connected to the 1.245 v reference. the noninverting input is available at the set pin. a resistor divider, connected between v in and gnd with the junction connected to the set pin, causes the ao output to go low when the low battery set point is exceeded. the ao output is an open collector npn transistor that can sink in excess of 300 a. the adp3000 provides external connections for both the collector and the emitter of its internal power switch, permitting both step-up and step-down modes of operation. for the step-up mode, the emitter (pin sw2) is connected to gnd, and the collector (pin sw1) drives the inductor. for step- down mode, the emitter drives the inductor, while the collector is connected to v in . the output voltage of the adp3000 is set with two external resistors. three fixed voltage models are also available: adp3000-3.3 (3.3 v), adp3000-5 (5 v), and adp3000-12 (12 v). the fixed voltage models include laser-trimmed, voltage-setting resistors on the chip. on the fixed voltage models of the adp3000, simply connect the feedback pin (pin 8) directly to the output voltage. obsolete
adp3000 rev. a | page 10 of 16 applications information component selection inductor selection for most applications, the inductor used with the adp3000 falls in the range of 4.7 h to 33 h. table 4 shows recommended inductors and their vendors. when selecting an inductor for the adp3000, it is very important to make sure the inductor is able to handle a current higher than the adp3000s current limit, without becoming saturated. as a general rule, powdered iron cores saturate softly, whereas ferrite cores saturate abruptly. rod and open drum core geometry inductors saturate gradually. inductors that saturate gradually are easier to use. even though rod and drum core inductors are attractive in both price and physical size, they must be used with care because they have high magnetic radiation. when minimizing emi is critical, toroid and closed drum core geometry inductors should be used. in addition, inductor dc resistance causes power loss. to minimize power loss, it is best to use an inductor with a dc resistance lower than 0.2 ?. table 4. recommended inductors vendor series core type phone number coiltronics octapac toroid (561) 752-5000 coiltronics unipac open (561) 752-5000 sumida cr43, cr54 open (847) 545-6700 sumida cdrh6d28, cdrh73, cdrh64 semi-closed geometry (847) 545-6700 capacitor selection for most applications, the capacitor used with the adp3000 falls in the range of 33 f to 220 f. table 5 shows recommended capacitors and their vendors. for input and output capacitors, use low esr type capacitors for best efficiency and lowest ripple. recommended capacitors include the avx tps series, the sprague 595d series, the panasonic hfq series, and the sanyo os-con series. when selecting a capacitor, it is important to make sure the maximum capacitor ripple current rms rating is higher than the adp3000s rms switching current. it is best to protect the input capacitor from high turn-on current charging surges by derating the capacitor voltage by 2:1. for very low input or output voltage ripple requirements, use capacitors with very low esr, such as the sanyo os-con series. alternatively, two or more tantalum capacitors can be used in parallel. table 5. recommended capacitors vendor series type phone number avx tps surface mount (843) 448-9411 sanyo os-con through hole (619) 661-6835 sprague 595d surface mount (603) 224-1961 panasonic hfq through hole (800) 344-2112 diode selection the adp3000s high switching speed demands the use of schottky diodes. suitable choices include the 1n5817, the 1n5818, the 1n5819, the mbrs120lt3, and the mbr0520lt1. fast recovery diodes are not recommended because their high forward drop lowers efficiency. general-purpose and small- signal diodes should be avoided as well. programming the switching current limit the adp3000s r lim pin permits the cycle-by-cycle switch current limit to be programmed with a single external resistor. this feature offers major advantages that ultimately decrease the components cost and the pcbs real estate. first, the r lim pin allows the adp3000 to use low value, low saturation current and physically small inductors. additionally, it allows for a physically small surface-mount tantalum capacitor with a typical esr of 0.1 ?. with this capacitor, it achieves an output ripple as low as 40 mv to 80 mv, as well as a low input ripple. the current limit is usually set to approximately 3 to 5 times the full load current for boost applications, and about 1.5 to 3 times the full load current in buck applications. the internal structure of the i lim circuit is shown in figure 24. q1, the adp3000s internal power switch, is paralleled by sense transistor q2. the relative sizes of q1 and q2 are scaled so that iq2 is 0.5% of iq1. current flows to q2 through both the r lim resistor and an internal 80 ? resistor. the voltage on these two resistors biases the base-emitter junction of the oscillator-disable transistor, q3. when the voltage across r1 and r lim exceeds 0.6 v, q3 turns on and terminates the output pulse. if only the 80 ? internal resistor is used (when the i lim pin is connected directly to v in ), the maximum switch current is 1.5 a. figure 13, figure 14, and figure 15 give values for lower current limit levels. v in sw2 sw1 r lim (external) driver 80 ? (internal) i lim i q1 200 v in q2 adp3000 q1 400khz oscillator q3 r1 00122-023 power switch figure 24. adp3000 current limit operation obsolete
adp3000 rev. a | page 11 of 16 the delay through the current limiting circuit is approximately 0.3 s. if the switch-on time is reduced to less than 1.7 s, accuracy of the current trip point is reduced as well. an attempt to program a switch-on time of 0.3 s or less produces spurious responses in the switch-on time. however, the adp3000 still provides a properly regulated output voltage. programming the gain block the adp3000s gain block can be used as a low battery detector, an error amplifier, or a linear post regulator. it consists of an op amp with pnp inputs and an open-collector npn output. the inverting input is internally connected to the 1.245 v reference, and the noninverting input is available at the set pin. the npn output transistor sinks in excess of 300 a. figure 25 shows the gain block configured as a low battery monitor. set resistors r1 and r2 to high values to reduce quiescent current, but not so high that bias current in the set input causes large errors. a value of 33 k? for r2 is a good compromise. the value for r1 is then calculated as follows: r2 v r1 lobatt v245.1 v245.1 ? = where v lobatt is the desired low battery trip point. because the gain block output is an open-collector npn, a pull-up resistor should be connected to the positive logic power supply. adp3000 1.245v ref gnd ao 5v r l 47k ? to processor r1 v batt v in set r hys 1.6m ? r2 33k ? v lb = battery trip point r1 = v lb ? 1.245v 37.7 a 00122-024 figure 25. setting the low battery detector trip point the circuit of figure 25 may produce multiple pulses when approaching the trip point due to noise coupled into the set input. to prevent multiple interrupts to the digital logic, add hysteresis to the circuit. resistor r hys , with a value of 1 m? to 10 m?, provides the hysteresis. the addition of r hys alters the trip point slightly, changing the new value for r1 to ? ? ? ? ? ? ? ? + ? ? ? ? ? ? ? ? ? ? ? = hys l l lobatt rr v r2 v r1 v245.1 v245.1 v245.1 where: v l is the logic power supply voltage. r l is the pull-up resistor. r hys creates the hysteresis. power transistor protection diode in step-down configuration when operating the adp3000 in step-down mode with the switch off, the output voltage is impressed across the internal power switchs emitter-base junction. when the output voltage is set to higher than 6 v, a schottky diode must be placed in a series with sw2 to protect the switch. figure 26 shows the proper way to place d2, the protection diode. the selection of this diode is identical to the step-down commuting diode (refer to the diode selection section). + 00122-025 adp3000 i lim v in sw1 fb sw2 gnd c2 r3 l1 r2 v in d1, d2 = 1n5818 schottky diodes + d1 d2 c1 r1 v out > 6v 3 4 5 1 2 8 figure 26. step-down mode v out > 6.0 v thermal considerations power dissipation internal to the adp3000 can be approximated with the following equations. step-up [] [] in q sw o o in sw in sw d vi i i v v d iv rip + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? += 4 1 2 where: i sw is i limit when the current limit is programmed externally; otherwise, i sw is the maximum inductor current. v 0 is the output voltage. i 0 is the output current. v in is the input voltage. r is 1 ? (typical r ce(sat) ). d is 0.75 (typical duty ratio for a single switching cycle). i q is 500 a (typical shutdown quiescent current). = 30 (typical forced beta). obsolete
adp3000 rev. a | page 12 of 16 step-down [] [] ? ? ? ? ? ? ? ? + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? + = in q sw o satce in o cesat sw d vi i i vv v vip 2 1 1 )( where: i sw is i limit when the current limit is programmed externally; otherwise, i sw is the maximum inductor current. v ce(sat) is 1.2 v (typical value). check this value by applying i sw to figure 10. v o is the output voltage. i o is the output current. v in is the input voltage. d is 0.75 (typical duty ratio for a single switching cycle). i q is 500 a (typical shutdown quiescent current ? ) . is 30 (typical forced beta). the temperature rise can be calculated using the following equation: ja d pt ?=? where: ? t is temperature rise. p d is device power dissipation. ja is thermal resistance (junction-to-ambient). for example, consider a boost converter with the following specifications: v in is 2 v. v o is 3.3 v. i o is 180 ma. i sw is 0.8 a (externally programmed). using the step-up power dissipation equation: [] [] [] 26500 8.0 18.0)4( 3.3 2 175.0 30 )8.0)(2( 18.0 2 ?+ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? += e p d ? t is 185 mw (170c/w) = 31.5c, using the r-8 package . ? t is 185 mw (120c/w) = 22.2c, using the n-8 package . at a 70c ambient, the die temperature would be 101.45c for the r-8 package and 92.2c for the n-8 package. these junction temperatures are well below the maximum recommended junction temperature of 125c. finally, the die temperature can be decreased up to 20% by using a large metal ground plate as ground pickup for the adp3000. obsolete
adp3000 rev. a | page 13 of 16 typical application circuits + 00122-026 adp3000-3.3v i lim v in sw1 sense sw2 gnd + c1 100 f 10v 120 ? l1 6.8 h in5817 c2 100 f 10v v in 2 v to 3.2v v out 3.3v 180ma l1 = sumida cr43-6r8 c1, c2 = avx tps d107 m010r0100 typical efficiency = 75% 3 2 4 1 5 8 figure 27. 2 v to 3.3 v/180 ma step-up converter 00122-027 + adp3000-5v i lim v in sw1 sense sw2 gnd + c1 100 f 10v 120 ? l1 6.8 h in5817 c2 100 f 10v v in 2v to 3.2v v out 5v 100ma l1 = sumida cr43-6r8 c1, c2 = avx tps d107 m010r0100 typical efficiency = 80% 3 2 4 1 5 8 figure 28. 2 v to 5 v/100 ma step-up converter 00122-028 + adp3000-5v i lim v in sw1 sense sw2 gnd + c1 100 f 10v 120 ? l1 6.8 h in5817 c2 100 f 10v v in 2.7v to 4.5v v out 5v 150ma l1 = sumida cr43-6r8 c1, c2 = avx tps d107 m010r0100 typical efficiency = 80% 3 2 4 1 5 8 figure 29. 2.7 v to 5 v/150 ma step-up converter 00122-029 + adp3000-12v i lim v in sw1 sense sw2 gnd + c1 100 f 10v 124 ? l1 15 h in5817 c2 100 f 16v v in 4.5v to 5.5v v out 12v 50ma l1 = sumida cr54-150 c1 = avx tps d107 m010r0100 c2 = avx tps d107 m016r0100 typical efficiency = 75% 3 2 4 1 5 8 figure 30. 4.5 v to 12 v/50 ma step-up converter 00122-030 adp3000-adj i lim v in sw1 fb sw2 gnd c1 100 f 10v 120 ? l1 10 h v in 5v to 6v l1 = sumida cr43-100 c1, c2 = avx tps d107 m010r0100 typical efficiency = 75% + d1 1n5817 c2 100 f 10v r2 150k ? r1 110k ? v out 3v 100ma 3 8 4 5 1 2 figure 31. 5 v to 3 v/100 ma step-down converter 00122-031 adp3000-5v i lim v in sw1 sense sw2 gnd c1 33 f 20v 250 ? l1 10 h v in 10v to 13v l1: sumida cr43-100 c1 = avx tps d336 m020r0200 c2 = avx tps d107 m010r0100 typical efficiency = 77% + d1 1n5817 c2 100 f 10v v out 5v 250ma 3 8 4 5 1 2 + figure 32. 10 v to 5 v/250 ma step-down converter obsolete
adp3000 rev. a | page 14 of 16 + 00122-032 adp3000-5v i lim v in sw1 sense sw2 gnd c1 47 f 16v 240 ? l1 15 h v in 5v l1 = sumida cr54-150 c1 = avx tps d476 m016r0150 c2 = avx tps d107 m010r0100 typical efficiency = 60% + d1 1n5817 c2 100 f 10v v out ?5v 100ma 3 8 4 5 1 2 figure 33. 5 v to ?5 v/100 ma inverter 00122-033 adp3000 i lim v in sw1 fb set a 0 gnd 100k ? 120 ? 2.5v to 4.2v (sumida ? cdrh62) + 1n5817 2n2907 100 f 10v avx-tps sw2 + 1m ? 90k ? 100 f 10v avx-tps 330k ? 200k ? 1% 100k ? 10k ? 90k ? 33nf 6.8 h adp3302ar1 v o1 v o2 in2 sd gnd in1 348k ? 1% 1 f 6v (mlc) 1 f 6v (mlc) 3v 100ma 3v 100ma figure 34. 1 cell li-ion to 3 v/200 ma converter with shut-down at v in 2.5 v 80 75 70 65 % efficiency 2.6 3.0 3.4 3.8 4.2 @ v in 2.5v shdn iq = 500 a i o = 100ma + 100ma i o = 50ma + 50ma vin (v) 00122-034 figure 35. typical efficiency of the circuit of figure 34 obsolete
adp3000 rev. a | page 15 of 16 outline dimensions seating plane 0.015 (0.38) min 0.180 (4.57) max 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.060 (1.52) 0.050 (1.27) 0.045 (1.14) 8 1 4 5 0.295 (7.49) 0.285 (7.24) 0.275 (6.98) 0.100 (2.54) bsc 0.375 (9.53) 0.365 (9.27) 0.355 (9.02) 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design compliant to jedec standards mo-095aa figure 36. 8-lead plastic dual in-line package [pdip] (n-8) dimensions shown in inches and (millimeters) 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 4 1 85 5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2440) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design compliant to jedec standards ms-012aa figure 37. 8-lead standard small outline package [soic] narrow body (r-8) dimensions shown in millimeters and (inches) obsolete
adp3000 rev. a | page 16 of 16 4.50 4.40 4.30 14 8 7 1 6.40 bsc pin 1 5.10 5.00 4.90 0.65 bsc seating plane 0.15 0.05 0.30 0.19 1.20 max 1.05 1.00 0.80 0.20 0.09 8 0 0.75 0.60 0.45 coplanarity 0.10 compliant to jedec standards mo-153ab-1 figure 38. 14-lead thin shrink small outline package [tssop] (ru-14) dimensions shown in millimeters ordering guide model output voltage temperature rang e package description package option adp3000an adjustable C40c to +85c 8-lead plastic dip n-8 adp3000an-3.3 3.3 v C40c to +85c 8-lead plastic dip n-8 adp3000an-5 5 v C40c to +85c 8-lead plastic dip n-8 adp3000an-12 12 v C40c to +85c 8-lead plastic dip n-8 adp3000ar adjustable C40c to +85c 8-lead soic r-8 adp3000ar-reel adjustable C40c to +85c 8-lead soic r-8 adp3000ar-3.3 3.3 v C40c to +85c 8-lead soic r-8 adp3000ar-3.3-reel 3.3 v C40c to +85c 8-lead soic r-8 adp3000ar-5 5 v C40c to +85c 8-lead soic r-8 adp3000ar-5-reel 5 v C40c to +85c 8-lead soic r-8 adp3000ar-12 12 v C40c to +85c 8-lead soic r-8 ADP3000AR-12-REEL 12 v C40c to +85c 8-lead soic r-8 adp3000aru adjustable C40c to +85c 14-lead tssop ru-14 adp3000aru-reel adjustable C40c to +85c 14-lead tssop ru-14 ? 2004 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. c00122C0C9/04(a) obsolete

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