View TJ4210GD-ADJ_9071638.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 1 / 12 htc features ? ultra low dropout voltage ? compatible with low esr mlcc as input/ o utput capacitor ? good line and load regulation ? guaranteed output current of 1 a ? available in sop8, sop8 - pp, sot - 223 and to - 252 pa ckages ? fixed output voltages : 1.0v, 1.2v, 1.8v, 2.5v, and 3.3v ? sense option improves load regulation ? over - temperature/over - current protection ? - 40 oc to 125 oc junction temperature range application ? lcd tvs and settop boxes ? battery powered equipment s ? motherboards and graphic cards ? microprocessor power supplies ? peripheral cards ? high efficiency linear regulators descrip t ion the tj 4210 series of high performance ultra - low dropout linear regulators operates from 2.5v to 5.5 v input supply and provides ultra - low dropout voltage, high output current with low ground current. wide range of preset output voltage options are available. these ultra - low dropout linear regulators respond fast to step changes in load which makes them suitable for low voltage micro - processor applications. the t j 4210 is developed on a cmos process technology which allows low quiescent current operation independent of output load current. this cmos process also allows the tj 4210 to operate under extremely low dropout conditions. sop8 / sop8 - pp dfn2x3 - 8l sot - 223 3l to252 3l / 5l pkg sot - 89 5l pkg ordering information device package tj421 0 g d - adj sop8 tj421 0 g d - x.x tj421 0 g dp - adj sop8 - pp tj421 0 g dp - x.x tj 421 0 x s - adj sot - 223 3l/5l tj 421 0 x s - x.x tj421 0 g rs - adj to - 252 3l/5l tj421 0 g rs - x.x tj4210gf - adj sot - 89 5l tj4210gq - adj dfn2x3 - 8l x.x = output voltage = 1.0, 1.2, 1.8, 2.5, 3.3 and adjustable absolute maximum ratings characteristic symbol min. max. unit input supply voltage (survival) v in - 6.5 v enable input voltage (survival) v en - 6.5 v maximum output current i max - 1 a lead temperature (soldering, 5 sec) t sol 260 oc storage temperature range t stg - 6 5 150 oc operating junction temperature range t jopr - 40 125 oc package thermal resistanc e * j a - sop8 - pp 6 8 oc /w * calculated from package in still air, mounted to 2. 6 mm x 3. 5 mm (minimum foot print ) 2 layer pcb without thermal vias per jesd 5 1 standards. operating ratings characteristic symbol min. max. unit recommend operating input voltage v in 2.5 5 .5 v
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 2 / 12 htc ordering information v out package order no. description package marking status adj sop8 tj42 1 0 gd - adj 1 a , adjustable, enable tj421 0g - adj contact us sop8 - pp tj42 1 0 gdp - adj 1 a, adjustable, enable tj 4210 g - adj active to - 2 52 5l tj42 1 0 g r s - adj - 5l 1 a, adjustable, enable tj 4210 g - adj contact us sot - 89 5l tj4210gf - adj 1a, adjustable, enable tj4210g - adj contact us dfn2x3 - 8l tj4210gq - adj 1a, adjustable, enable 10gad contact us 1. 0 v sop8 tj42 1 0 gd - 1.0 1 a, enable, sense tj 4210 g - 1. 0 contact us sop 8 - pp tj42 1 0 gdp - 1.0 1 a, enable, sense tj 4210 g - 1. 0 contact us sot - 223 3l tj42 1 0s - 1. 0 1 a 4210 - 1. 0 contact us to - 2 52 3l tj42 1 0 g r s - 1. 0 - 3l 1 a tj 4210 g - 1. 0 contact us to - 2 52 5 l tj42 1 0 g r s - 1. 0 - 5 l 1 a , enable, sense tj 4210 g - 1. 0 contact us 1.2v sop8 tj42 1 0 gd - 1.2 1 a, enable, sense tj 4210 g - 1.2 contact us sop8 - pp tj42 1 0 gdp - 1.2 1 a, enable, sense tj 4210 g - 1.2 contact us sot - 223 3l tj42 1 0s - 1.2 1 a 4210 - 1.2 contact us to - 2 52 3l tj42 1 0 g r s - 1.2 - 3l 1 a tj 4210 g - 1.2 contact us to - 2 52 5 l tj42 1 0 g r s - 1.2 - 5 l 1 a , enable, sense tj 4210 g - 1.2 contact us 1. 8 v sop8 tj42 1 0 gd - 1.8 1 a, enable, sense tj 4210 g - 1. 8 contact us sop8 - pp tj42 1 0 gdp - 1.8 1 a, enable, sense tj 4210 g - 1. 8 contact us sot - 223 3l t j42 1 0s - 1. 8 1 a 4210 - 1. 8 contact us to - 2 52 3l tj42 1 0 g r s - 1. 8 - 3l 1 a tj 4210 g - 1. 8 contact us to - 2 52 5 l tj42 1 0 g r s - 1. 8 - 5 l 1 a , enable, sense tj 4210 g - 1. 8 contact us 2.5v sop8 tj42 1 0 gd - 2.5 1 a, enable, sense tj 4210 g - 2.5 contact us sop8 - pp tj42 1 0 gdp - 2.5 1 a, enable, sense tj 4210 g - 2.5 contact us sot - 223 3l tj42 1 0s - 2.5 1 a 4210 - 2.5 contact us to - 2 5 2 3l tj42 1 0 g r s - 2.5 - 3l 1 a tj 4210 g - 2.5 contact us to - 2 52 5 l tj42 1 0 g r s - 2.5 - 5 l 1 a , enable, sense tj 4210 g - 2.5 contact us 3.3v sop8 tj42 1 0 gd - 3.3 1 a, enable, sense tj 4210 g - 3.3 contact us sop8 - pp tj42 1 0 gdp - 3.3 1 a, enable, sense tj 4210 g - 3.3 contact us sot - 22 3 3l tj42 1 0s - 3.3 1 a 4210 - 3.3 contact us to - 2 52 3l tj42 1 0 g r s - 3.3 - 3l 1 a tj 4210 g - 3.3 contact us to - 2 52 5 l tj42 1 0 g r s - 3.3 - 5 l 1 a , enable, sense tj 4210 g - 3.3 contact us lead count : 3l / 5l (applied for to252 only ) output voltage : adj / 1. 0v / 1.2v / 1.8v / 2.5v / 3.3v package type d dp s rs f q : sop8 : sop8 - pp : sot - 223 : to - 252 : sot - 89 : dfn2x3 - 8l root name product code t j 4 2 1 0 g r s C a d j C 5 l material class g blank : halogen free : pb free
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 3 / 12 htc pin configuration s op8 / sop8 - pp dfn2x3 - 8l sot223 - 3l to252 - 3l to252 - 5l sot - 89 - 5l pin description pin no. sop8/sop8 - pp dfn2x3 - 8l sot - 89 5 lead name name name function name function 1 n.c. - gnd ground adj output adjust 2 en chip enable en chip enable gnd ground 3 v in input supply v in input supply en chip enable 4 n.c. - n.c. - v in inp ut supply 5 n.c. - n.c. - v out output voltage 6 v out output voltage v out output voltage - - 7 sense/adj remote sense or output adjust n.c. - - - 8 gnd ground adj output adjust - - * exposed pad of sop8 - pp package should be externally connected to gnd. pin no. sot - 223/to - 252 3 lead to - 252 5 lead name function name function 1 v in input supply en chip enable 2 gnd ground v in input supply 3 v out output voltage gnd ground 4 - - v out output voltage 5 - - sense/adj remote sense or output adjust 6 - - - - 7 - - - - 8 - - - - exposed pad n . c en vin n . c gnd adj / sense vout n . c 1 2 3 4 8 7 6 5 g n d 1 2 3 8 7 6 e n v i n a d j n . c . v o u t 4 5 n . c . n . c . t o p v i e w 4 3 2 5 1 v i n v o u t e n g n d a d j
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 4 / 12 htc basic application typical 3 pin application typical 5 / 8 pin application 5 / 8 pin remote load sense application typical ad justable version application * tj 4210 can deliver a continuous current of 1 a over the full operating temperature. however, the output current is limited by the restriction of power dissipation which differs from packages. a heat sink may be required depending on the maximum power dissipation and maximum ambient temperature of application. with respect to the applied package, t he maximum output current of 1 a may be still undeliverable. * see application information . c out 10 uf c in 10 uf v in v out tj 4210 gnd vin vout c out 10 uf c in 10 uf en v in v out sense tj 4210 gnd vin vout en c in 10 uf en v in v out sense tj 4210 gnd vin en c out 10 uf l o a d vout c out 10 uf c in 10 uf en v in v out adj tj 4210 gnd vin vout en r 2 r 1 c ff
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 5 / 12 htc el ectrical characteristics (note 1) limits in standard typeface are for tj=25 o c , and limits in boldface type apply over the full operating temperature range . unless otherwise specified: v in (note 2) = v o(nom) + 1 v, i l = 10 ma, c in = 10 uf, c out = 10 uf, v en = v in - 0.3 v parameter symbol test condition min. typ. max. unit output voltage tolerance v o v out +1 v < v in < 5.5 v - 2 - 3 0 2 3 % adjustable pin voltage (adj version) v adj 2.5 v < v in < 5.5 v 0.784 0.776 0.8 0.816 0.824 v line regulation (note 3) v l in e v out +1 v < v in < 5.5 v - 0. 15 - 0 . 4 0 % /v load regulation (note 3, 4) v load 10 ma < i l < 1 a - 0. 6 0 - % dropout voltage (note 5) v drop i l = 1 0 0 ma - 45 55 65 mv i l = 1 a - 40 0 50 0 60 0 ground pin current (note 6) i gnd i l = 1 00 ma - 0.40 0.6 1. 0 m a i l = 1 a - 0. 40 0.6 1. 0 ground pin current (note 7) i gnd _off v en < 0.2 v - 0.5 1 2 ua power supply rejection ratio psrr f = 1khz - 55 - db f = 1khz, c ff = 1uf - 65 - thermal shutdown temperature t sd - - 165 - oc enable threshold logic low v il outpu t = low - - 0. 4 v logic high v ih output = high 2.0 - - v enable input current i en v en = v in - 0.1 - 1 u a note 1. stresses listed as the absolute maximum ratings may cause permanent damage to the device. these are for stress ratings. funct ional operati ng of the device at these or any other conditions beyond those indicated in the operational sections of th e specifications is not implied. exposure to absolute maximum rating conditions for extended periods may remain possibly to affect device reliability. note 2. the minimum operating value for input voltage is equal to either (v out,nom + v drop ) or 2.5v, whichever is greater. note 3. output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage. output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load curren t. note 4. regulation is measured at constant junction temperature by using a 1 0ms current pulse. devices are tested for load regulation in the load range from 10ma to 1 a . note 5. dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. dropout voltage specification applies only to output voltag es of 2.5v and above. for output voltages below 2.5v, the dropout voltage is nothing but the input to output differential, since the minimum input voltage is 2.5v note 6. ground current, or quiescent current, is the difference between input and output curr ents. it's defined by i gnd1 = i in - i out under the given loading condition. the total current drawn from the supply is the sum of the load current plus the ground pin current. note 7. ground current, or standby current, is the input current drawn by a regu lator when the output voltage is disabled by an enable signal.
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 6 / 12 htc application information introduction tj 4210 is intended for applications where high current capability and very low dropout voltage are required. it provides a simple, low cost solution tha t occupies very little pcb estate. additional features include an enable pin to allow for a very low power consumption standby mode, an adjustable pin to provide a fully adjustable output voltage , and sense pin to provide better remote load regulation char acteristics. component selection input capacitor : a large bulk capacitance over than 10 uf should be closely placed to the input supply pin of the tj 4210 to ensure that the input supply voltage does not sag. also a minimum of 10uf ceramic capacitor is r ecommended to be placed directly next to the v in pin. it allows for the device being some distance from any bulk capacitor on the rail. additionally, input droop due to load transients is reduced, improving load transient response. additional capacitance may be added if required by the application. (see fig.1) output capacitor : a minimum ceramic capacitor over than 10uf should be very closely placed to the output voltage pin of the tj 4210 . increasing capacitance will improve the overall transient respon se and stability. decoupling (bypass) capacitor : in very electrically noisy environments, it is recommended that additional ceramic capacitors be placed from vin to gnd. the use of multiple lower value ceramic capacitors in parallel with output capacit or also allows to achieve better transient performance and stability if required by the application.(see fig. 1 ) feed - forward capacitor to get the higher psrr than the inherent performance of tj 4210 , it is recommended that additional ceramic feed - forward c apacitor be placed from vout pin to adj pin. the capacitance of feed - forward capacitor with range of 10pf to 1uf allows to achieve better psrr performance when required by the application.(see fig. 2 ) fig . 1. application with decoupling capacito r, fig. 2. application with feed - forward capacitor, cc1 & cc2 cff delayed start - up w hen power sequence control is required or rising time of input supply voltage is over than 100u s ec, it is recommended to apply delayed start - up by using cdelay as shown in fig. 3. it can adjust proper delay by rp - cdelay time constant. and also it can prevent any unexpected transient characteristics at output voltage when the rising time of input supply voltage is as long a s 100usec or longer. fig. 3. application with delayed start - up c out 10 uf en v in v out sense tj 4210 gnd vin vout r p cc 2 c in 10 uf cc 1 c out 10 uf c in 10 uf en v in v out adj tj 4210 gnd vin vout r 2 r 1 r p cc 2 cff cc 1 c out 10 uf c in 10 uf en v in v out adj tj 4210 gnd vin vout r 2 r 1 r p cff c delay
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 7 / 12 htc output adjustment (adjustable version) an adjustable output device has output voltage range of 0.8v to 5.0 v. the operating condition of v in and the operating characteristics of v out d epend on the dropout voltage performance in accordance with output load current presented at fig. 7 . to obtain a desired output voltage, the following equation can be us ed with r1 resistor range of 10 0 to 5 0k . fig. 4. application for adjustable output voltage to enhance output stability, a feed - forward capacitor of 10nf to 1u f can be placed in series with v out and adj. (refer to "component selectio n" section) sense pin in applications where the regulator output is not very close to the load, the tj 4210 can provide better remote load regulation characteristics using the sense pin. tj 4210 regulates the voltage at the output pin. hence, the voltag e at the remote load will be lower than the voltage at the output pin as a value of the voltage drop across the trace series resistance. if the sense option pin is not required, the sense pin must be connected to the v out pin. connecting the sense pin to the remote load will provide regulation at the remote load because the tj 4210 regulates the voltage at the sense pin when the sense option pin is used. fig. 5. conventional linear regulator application fig.6. remote load sense application maximum output current capability the tj 4210 can deliver a continuous current of 1 a over the full operating junction temperature range. however, the output current is limited by the restriction of power dissipation which differs from packages. a heat sin k may be required depending on the maximum power dissipation and maximum ambient temperature of application. with respect to the applied package, the maximum output current of 1 a may be still undeliverable due to the restriction of the power dissipation o f tj 4210 . under all possible conditions, the junction temperature must be within the range specified under operating conditions. the temperatures over the device are given by: t c = t a + p d x ca t j = t c + p d x jc t j = t a + p d x ja c out 10 uf c in 10 uf en v in v out adj tj 4210 gnd vin vout en r 2 r 1 cff ? ? ? ? ? ? ? ? 1 8 0 1 2 . v r r out
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 8 / 12 htc where t j is the junction temperature, t c is the case temperature, t a is the ambient temperature, p d is the total power dissipation of the device, ca is the thermal resistance of case - to - a mbient , jc is the thermal resistance of junction - to - c ase , and ja is the thermal resistance of junction to ambient. the total power dissipation of the device is given by: p d = p in C p out = (v in x i in ) C (v out x i out ) = (v in x (i out +i gnd )) C (v out x i out ) = (v in - v out ) x i out + v in x i gnd where i gnd is the operating ground current of the device which is specified at the electrical characteristics. the maximum allowable temperature rise (t rmax ) depends on the maximum ambient temperature (t amax ) of the application, and the maximum allowable junction temperature (t jmax ): t rmax = t jmax C t amax the maximum allowable value for junction - to - ambient thermal resistance , ja , can be calculated using the formula : ja = t rmax / p d tj 4210 is available in sot223, sop8 - pp and to252 packages. the thermal resistance depends on amount of copper area or heat sink, and on air flow. if proper cooling solution such as heat si nk, copper plane area, or air flow is applied, the maximum allowable power dissipation could be increase d . however, if the ambient temperature is increased, the allowable power dissipation would be decreased. the graph above is valid for the thermal i mpedance specified in the absolute maximum ratings section on page 1.
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 9 / 12 htc the ja could be decreased with respect to the copper plane area. so, the specification of maximum power dissipation for an application is fixed, the proper plane area could be estimated by following graphs. wider copper plane area leads lower ja . the m aximum allowable power dissipation is also influenced by the ambient temperature. with the ja - copper plane area relationship, the maximum allowable power dissipation could be evaluated with respect to the ambient temperature. as shown in graph, the high er copper plane area leads ja . and the higher ambient temperature leads lower maximum allowable power dissipation.
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 10 / 12 htc typical operating characteristics test circuit case 1 ( vin = 3.3v, vout = 2.5v ) vin : 2 .0v/div, vout : 1.0v/div, time : 50ms/div vin : 2 .0v/div, vout : 1.0v/div, time : 50ms/div start up @ iout=0a (cff=10nf, r2= 51k? , r1=24k ? ) start up @ iout= 1 a (cff=10nf, r2= 51k? , r1=24k ? ) vin : 2 .0v/div, vout : 1.0v/div, ti me : 50ms/div vin : 2 .0v/div, vout : 1.0v/div, time : 50ms/div start up @ iout=0a (cff=1u f, r2=120 k? , r1=56k ? ) start up @ iout= 1 a (cff=1u f, r2=120 k? , r1=56k ? ) vin v out vin v out vin v out vin v out v i n e n v o u t a d j g n d r 2 r 1 v i n v o u t 1 0 u f 1 0 u f c f f 1 0 k c d e l a y
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 11 / 12 htc vin : 1.0v/div, vout : 1.0v/div, time : 50ms/div vin , ven : 2 .0v/div, v out : 2 .0v/div, time : 50ms/div start up @ iout=1a (cff is varied, r2= 51k? , r1=24k ? ) start up with cdelay @ iout=10ma (cdelay is varied, cff=10nf, r2= 51k? , r1=24k ? ) vin : 1.0v/div, vout : 1.0v/div, time : 50ms/div vin : 1.0v/div, ven : 1 .0 v/div, vout : 1 .0v/div, time : 5ms/div start up by external ven @ iout=0a (cff=10nf, r2= 51k? , r1=24k ? ) start up by external ven @ iout= 1 a (cff=10nf, r2= 51k? , r1=24k ? ) iout : 1.0a/div, vout : 20mv/div, time : 500ms/div iout : 1.0a/div, v out : 20mv/div, time : 500ms/div load transient response (cff=10nf, r2= 51k? , r1=24k ? ) load transient response (cff=10nf, r2= 51k? , r1=24k ? ) vin v en v out vin v out 10nf 100nf 1 u f without cdelay 22 0nf 470 u f v out iout v out iout vin v out ven vin vout ven
1 a ultra low dropout linear regulator tj42 1 0 oct . 20 1 2 C rev.1.0 . 6 12 / 12 htc dropout voltage @ vout=2.5v 0 100 200 300 400 500 600 0 0.2 0.4 0.6 0.8 1 output current [a] dropout voltage [mv]

▲Up To Search▲

Price & Availability of TJ4210GD-ADJ

	To Download TJ4210GD-ADJ Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .