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SP6685
700mA Buck/Boost Charge Pump LED Driver
FEATURES VIN 1 10 VOUT Output Current up to 700mA C1 2 Up to 94% Efficiency in Torch Mode SP6685 9 PGND Adjustable FLASH Mode Current 8 SGND C2 3 10 Pin DFN Minimum External Components: No Inductors 7 FB FLASH 4 Automatic Buck/Boost Mode Switchover 6 RSET EN 5 Wide VIN Range: 2.7V to 5.5V High Frequency Operation: 2.4 MHz Now Available in Lead Free Packaging Low 50mV Reference for low Loss Sensing IQ < 1A in Shutdown APPLICATIONS PWM Dimming Control White LED Torch/Flash for Cell Automatic Soft Start Limits Inrush Current Phones, DSCs, and Camcorders Overvoltage Protection on Output White LED Backlighting Overcurrent/Temperature Protection Generic Lighting/Flash/Strobe Applications Low Ripple and EMI General Purpose High Current Boost Ultra-low Dropout Voltage in Buck Mode Space Saving 10-pin 3mm x 3mm DFN Package DESCRIPTION The SP6685 is a current-regulated charge pump ideal for powering high brightness LEDs for camera flash applications. The charge pump can be set to regulate two current levels for FLASH and TORCH modes. The SP6685 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. A low current sense reference voltage (50mV) allows the use of small 0603 current sensing resistors. The SP6685 is offered in the 10-pin DFN package. TYPICAL APPLICATION CIRCUIT
VIN (2.7 - 5.5V)
O
CIN 4.7F VIN CFC 1F C1 C2 FLASH EN
(R)
VOUT COUT 1F WLED
SP6685 PGND SGND FB RSET RSET 88K
TORCH/FLASH ENABLE
RSENSE 0.22
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
VIN , VOUT ....................................................................... -0.3V to 6V Output Current Pulse (Flash) ................................. 1A Output Current Continuous (Torch) ..................... 0.4A Storage Temperature ...................... -65C to +150C Operating Temperature ..................... -40C to +85C VEN ............................................................ 0.0V to 7V 3mmx3mm 10 DFN .............................OJA = 57.1C/W ESD Rating. ................................................ 2kV HBM These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
ELECTRICAL CHARACTERISTICS
TA = -40C to +85C, VIN = 3.6V, CIN = 4.7F, CFC = COUT = 1.0F. VSHDN = VIN, typical values at 25C. The denotes the specifications which apply over the full operating temperature range unless otherwise noted.
PARAMETER Operating Input Voltage Quiescent Current
MIN. 2.7
TYP.
MAX. 5.5
UNITS V mA
CONDITIONS
0.5 2
3
V IN = 2.7 - 5.5V FLASH = 0.0V, ILOAD = 100A FLASH = VIN, 2x mode
Shutdown Current Oscillator Frequency Charge Pump Equivalent Resistance (x2 mode) Charge Pump Equivalent Resistance (x1 mode) FB Reference Voltage FB Reference Voltage FB Pin Current EN, FLASH Logic Low EN, FLASH Logic High EN, FLASH Pin Current V OUT Turn-on Time Thermal Shutdown Temperature 250 145 1.3 138 45 2.4 5 0.6 150 50
1
A MHz
V IN = 5.5V, VEN = 0.0V
V FB = 0.0V, VIN= 3.6V 0.8 162 55 0.5 0.4 mV mV A V V 0.5 500 A s
o
V IN= 3.6V FLASH = VIN R SET = 88.7K FLASH = GND V FB = 0.3V V IN = 3.6V, FB within 90% of regulation
C
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
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PIN DESCRIPTION
PIN NUMBER 1 2 3 4 PIN NAME VIN C1 C2 FLASH DESCRIPTION Input Voltage for the charge pump. Decouple with 4.7F ceramic capacitor close to the pins of the IC. Positive input for the external fly capacitor. Connect a ceramic 1F capacitor close to the pins of the IC. Negative input for the external fly capacitor. Connect a ceramic 1F capacitor close to the pins of the IC. Logic input to toggle operation between FLASH and TORCH mode. In TORCH mode FB is regulated to the internal 50mV reference. In FLASH mode FB reference voltage can be adjusted by changing the resistor from RSET pin to ground. Choose the external current sense resistor (RSENSE) based on desired current in TORCH mode. Shutdown control input. Connect to VIN for normal operation, connect to ground for shutdown. Connect a resistor from this pin to ground. When in FLASH mode (FLASH = High) this resistor sets the current regulation point according to the following: VFB = (1.26V/ RSET)*11.2K. Feedback input for the current control loop. Connect directly to the current sense resistor. Internal ground pin. Control circuitry returns current to this pin. Power ground pin. Fly capacitor current returns through this pin. Charge Pump Output Voltage. Decouple with an external capacitor. At least 1F is recommended. Higher capacitor values reduce output ripple.
5 6
EN RSET
7 8 9 10
FB SGND PGND VOUT
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, Typical Application Circuit, D1 = Luxeon LXCL-PWF1, TA = 25C unless otherwise noted.
300
Torch Mode 200mA Iou
900 800 700
Flash Mode 700mA Io
Iout (mA)
Iout (mA)
200
600 500 400 300 200 100
Vf = 3.0V
100
Vf = 3.3V Vf = 3.6V Vf = 3.9V
Vf = 3.3V Vf = 3.6V Vf = 3.9V Vf = 4.2V
0 3.0 3.2 3.4 3.6 Vin (V 3.8 4.0 4.2
0 3.0 3.2 3.4 3.6 Vin (V 3.8 4.0 4.2
Figure 1. Torch Mode Output Current
Figure 2. Flash Mode Output Current
100 90
Efficiency (%)
Torch Mode 200mA Efficie
100 90
Flash Mode 700mA Efficie
80 70 60 50 40 3.0
Efficiency (%)
80 70 60 50 40
Vf Vf Vf Vf
= = = =
3.0 3.3 3.6 3.9
Vf Vf Vf Vf
= = = =
3.3V 3.6V 3.9V 4.2V
3.2
3.4
3.6 Vin (V
3.8
4.0
4.2
3.0
3.2
3.4
3.6 Vin (V
3.8
4.0
4.2
Figure 3. Torch Mode Efficiency
Figure 4. Flash Mode Efficiency
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, Typical Application Circuit, D1 = Luxeon LXCL-PWF1, TA = 25C unless otherwise noted.
VIN
VIN
VOUT
VOUT
Figure 5. PWF1 Ripple 1X Flash 700mA Ch1 = VIN, Ch2 = VOUT, VIN = 4.2V, CIN = 10F, CFC = 1F, COUT = 4.7F
Figure 6. PWF1 Ripple 2X Flash 700mA Ch1 = VIN, Ch2 = VOUT, VIN = 3.6V, CIN = 10F, CFC = 1F, COUT = 4.7F
VIN
VIN
VOUT
VOUT
Figure 7. PWF1 Ripple 1X Torch 200mA VIN = 4.2V, CIN = 10F CFC = 1F, COUT = 4.7F
Figure 8. PWF1 Ripple 2X Torch 200mA VIN = 3.0V, CIN = 10F CFC = 1F, COUT = 4.7F
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, Typical Application Circuit, D1 = Luxeon LXCL-PWF1, TA = 25C unless otherwise noted.
Flash 1X Input Ripple Vs Output 200
Vin Ripple (mVpp)
Vin Ripple (mVpp)
Flash 2X Input Ripple Vs Output 100 80 60 40 20 0 100
150
Cin = 4.7uF
Cin = 4.7uF Cin = 10uF
100
Cin = 10uF
50
0 100
200
300
400
500
600
700
200
300
400
500
600
700
Output Current (m
Output Current (m
Figure 9. COUT = 4.7F
Figure 10. COUT = 4.7F
200
Flash 1X Vout Ripple Vs Output C
Flash 2X Vout Ripple Vs Output C 200
Vout Ripple (mVpp)
150
Vout Ripple (mVpp)
150
100
100
50
Cout = 1uF Cout = 2.2uF Cout = 4.7uF
50
0 200
Cout = 1uF Cout = 2.2uF Cout = 4.7uF
300
400
500
600
700
Output Current (m
0 200
300
400
500
600
700
Output Current (m
Figure 11. CIN = 10F
Figure 12. CIN = 10F
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS
D1 = Luxeon LXCL-PWFI LED, Rsense = 0.22ohms, RSET = 88.7K, CIN = 4.7F, CFC = 1.0F, COUT = 1.0F D1 = AOT 3228HPW0303B LED, Rsense = 0.33ohms, RSET = 162K, CIN = 4.7F, CFC = 0.47F, COUT = 1F
900 800 700
Iout (mA)
Output Current Vs Supply Vol
400 350 300
Output Current Vs Supply Vol
Iout (mA)
600 500 400 300 200 100 0 3.0 3.2 3.4 3.6 Vin (V 3.8 4.0 4.2
250 200 150 100 50 0
Flash 300mA Vf = 3.85 Torch 150mA Vf = 3.45
Flash 700mA Vf = 3 Torch 200mA Vf = 3.
3.0
3.2
3.4
3.6 Vin (V
3.8
4.0
4.2
Figure 13.
Figure 16.
100 90
Efficiency Vs Supply Vol
100 90
Efficiency (%)
Efficiency Vs Supply Vol Flash 300m Vf = 3.85V Torch 150mA Vf = 3.45V
Efficiency (%)
80 70 60
80 70 60 50 40 3.0
Flash 700mA 3.45V Torch 200mA
Mode Vf = Mode Vf = 3.
50 40 3.0
3.2
3.4
3.6 Vin (V
3.8
4.0
4.2
3.2
3.4
3.6 Vin (V
3.8
4.0
4.2
Figure 14.
Figure 17.
1800 1600 1400
Iin (mA)
Battery Current Vs Supply Vo
800 700 600
Iin (mA)
Battery Current Vs Supply Vo
1200 1000 800 600 400 200 0 3.0 3.2 3.4 3.6 Vin (V 3.8 4.0 4.2
500 400 300 200 100 0 3.0 3.2 3.4
Flash 300mA Vf = 3.8 Torch 150mA Vf = 3.4
Flash 700mA Vf = 3. Torch 200mA Vf = 3.
3.6 Vin (V
3.8
4.0
4.2
Figure 15. Note: diode, resistor, and capacitor settings apply to figures 13, 14, and 15.
Figure 18. Note: diode, resistor, and capacitor settings apply to figures 16, 17, and 18.
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS
DI = AOT 6060HPW0305BD LED, Rsense = 0.33ohms, RSET = 75K, CIN = 4.7F, CFC = 1.0F, COUT = 1.0F
Output Current Vs Supply Vol
D1 = AOT 2015HPW-1915B LED, Rsense = 0.22ohms, RSET = 80.6K, CIN = 4.7F, CFC = 1.0F, COUT = 1.0F
700 600
700 600 500
Output Current Vs Supply Vol
Iout (mA)
500
Iout (mA)
400 300 200 100 0 3.0 Flash 500mA Vf = 4 Torch 150mA Vf = 3
400 300 200 100
Flash 600mA Vf=3.8V Torch 200mA Vf=3.2V
3.2
3.4
3.6
3.8
4.0
4.2
Vin (V
0 3.0
3.2
3.4
3.6 Vin (V
3.8
4.0
4.2
Figure 19.
Figure 22.
100 90
Efficiency (%)
Efficiency Vs Supply Vol
100 90
Efficiency Vs Supply Vol
80 70 60 50 40
3.0 3.2
Flash 500mA Vf = 4.1V Torch 150mA Vf = 3.5V
Efficiency (%)
80
70 60 50 40
Flash 600mA Vf=3.8 Torch 200mA Vf = 3
3.4
3.6
3.8
4.0
4.2
Vin (V
3.0
3.2
3.4
3.6 Vin (V
3.8
4.0
4.2
Figure 20.
Figure 23.
1400 1200 1000
Battery Current Vs Supply Vo
1400 1200 1000
Battery Current
Vs Supply V
Iin (mA)
800 Flash 500mA Vf = 4 600 400 200 0 3.0 Torch 150mA Vf = 3
Iin (mA)
800 600 400 200
Flash 600mA Vf=3. Torch 200mA Vf=3.
3.2
3.4
3.6
3.8
4.0
4.2
0
3.0 3.2 3.4 3.6 Vin (V 3.8 4.0 4.2
Vin (V
Figure 21. Note: diode, resistor, and capacitor settings apply to figures 19, 20, and 21.
Figure 24. Note: diode, resistor, and capacitor settings apply to figures 22, 23, and 24.
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
8
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6V, Typical Application Circuit, D1 = Luxeon LXCL-PWF1, TA = 25C unless otherwise noted.
Ch1 = EN
Ch1 = EN
Ch2 = VOUT Ch4 = lin (0.5A/div)
Ch2 = VOUT
Ch4 = lin (0.5A/div)
Figure 25. Startup 200mA Torch, VIN = 3.6V, VOUT = 3.2V
Figure 26. Startup 700mA Flash, VIN = 3.6V, VOUT = 3.6V
Figure 27. Torch in 1X to Flash in 1X Mode VIN = 4.2V. CH1 = FLASH, CH2 = VOUT, CH3 = VFB, CH4 = IOUT 1A/div.
Figure 28. Torch in 1X to Flash in 2X Mode VIN = 3.6V. CH1 = FLASH, CH2 = VOUT, CH3 = VFB, CH4 = IOUT 1A/div.
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
9
TYPICAL PERFORMANCE CHARACTERISTICS
Application Circuit = Figure 31, TA = 25C.
100
Flash 600mA
Efficiency
Flash 300mA Torch 150mA Flash 400mA
900 800 700 600
Output Current
Flash 600mA Vf=4.34V Flash 500mA Vf=4.13V Flash 400mA Vf=3.93V Flash 300mA Vf=3.72V Torch 150mA Vf=3.33V
90 80 70 60 50
Efficiency (%)
Flash 500mA
Iout (mA)
500 400 300 200 100
40 3.0 3.2 3.4 3.6 3.8 4.0 4.2
0 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
Vin (V)
Vin (V)
Figure 29. Efficiency vs. VIN.
Figure 30. Output Current vs. VIN.
APPLICATION INFORMATION The SP6685 can be used with multiple LEDs in parallel as shown in figure 31. For best performance, the LEDs should be in a single package, preferably from a single die to have better matching for forward voltage Vf for a given forward current If. In practice, if the Vf of one LED is higher than the others, it will consume a larger If, which will raise its temperature which will then cause its Vf to reduce, correcting the imbalance. The overall current will be the sum of the individual currents, for example Itotal = 4*ILED.
SP6685
1 Vin C1 C2 FLASH EN VOUT PGND SGND IFB ISET 10 9 8 7 6
Vin: 3.0-4.2V
Cin 10uF
1 2 3 J2
CF 1uF
2 3 4 5
Cout 4.7 uF
D1 Sharp LED GM5BW05340AC R FB VFB = 50mV Torch150mA 0.33 Ohm 100mV Flash 300mA
Jumper
SW2
R EN 10K
R SET 139K
Push ON
Figure 31. MULTIPLE LED FLASH CIRCUIT.
Date: 7/6/06 Rev B SP6685, 700mA Buck/BoostCharge Pump LED Driver (c) 2006 Sipex Corporation
10
FUNCTIONAL DIAGRAM
RSET BLOCK RSET 6 RSET
1.26V V= RSET
CLK RSET REF BG REF + - 1.26V
RESISTOR TAPS
+ -
MUX 2x1 50mV 0 s
1
FB REF + FB 7 SGN 8 FB COM P
COUNTER 32 COUNT
FB COMP
CLR
{ }x11.
SET DOMINANT S 0 R
2kohms
ONE SHOT
FLASH 4 FLASH=1, S=1, RSET REF FLASH=0, S=0, 50mV
EN 5 VIN 1 MODE SWITCH 0 =1X 1=2X
135C ON 145C OFF
THERMAL FAULT OVER TEMP COMP
CHARGE PUMP SWITCHES
C1 C2 VOUT
2.4MHZ CLK
CLK
PGND
THEORY OF OPERATION The SP6685 is a charge pump regulator designed for converting a Li-Ion battery voltage of 2.7V to 4.2V to drive a white LED used in digital still camera Flash and Torch applications. The SP6685 has two modes of operation which are pin selectable for either Flash or Torch. Flash mode is usually used with a pulse of about 200 to 300 milliseconds to generate a high intensity Flash. Torch can be used continuously at a lower output current than Flash and is often used for several seconds in a digital still camera "movie" mode. The SP6685 also has two modes of operation to control the output current: the 1X mode and 2X mode. Operation begins after the enable pin EN receives a logic high, the bandgap reference wakes up after 200sec, and then SP6685 goes through a soft-start mode designed to reduce inrush current. The SP6685 starts in the 1X mode, which acts like a linear regulator to control the output current by continuously monitoring the feedback pin FB. In 1X mode, if the SP6685 auto detects a dropout condition, which is when the FB pin is below the regulation point for more than 32 cycles of the internal clock, the SP6685 automatically switches to the 2X mode. The SP6685 remains in the 2X mode until one of four things happens: 1) the enable pin EN has been toggled, 2) the Flash pin has changed from high to low, 3) VIN is cycled or, 4) a thermal fault occurs. The 2X mode is the charge pump mode where the output can be pumped as high as two times the input voltage, provided the output does not exceed the maximum voltage for the SP6685, which is internally limited to about 5.5V. In the 2X mode, as in the 1X mode, the output current is regulated by the voltage at the FB pin. In the Torch mode, (Flash = GND) the Flash pin is set to logic low and the SP6685 FB pin regulates to 50mV output: VFB = 50mV (Torch Mode)
(c) 2006 Sipex Corporation
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
11
THEORY OF OPERATION When in Flash mode, (Flash = VIN), the FB regulation voltage is set by the resistor RSET connected between the RSET pin and SGND and the equation: VFB = (1.26V/ RSET)*11.2K (Flash Mode) Where 1.26V is the internal bandgap reference voltage and 11.2K is an internal resistance used to scale the RSET current. Typical values of RSET are 40K to 180K for a range of VFB = 300mV to 75mV in Flash mode. The output current is then set in either Flash or Torch mode by the equation: IOUT = VFB / RSENSE ______________VERTEMPERATURE O PROTECTION When the temperature of the SP6685 rises above 145 degrees Celsius, the over temperature protection circuitry turns off the output switches to prevent damage to the device. If the temperature drops back down below 135 degrees Celsius, the part automatically recovers and executes a soft start cycle. ___________________ OVERVOLTAGE PROTECTION The SP6685 has over voltage protection. If the output voltage rises above the 5.5V threshold, the over voltage protection shuts
Manufacturers Website TDK/www.tdk.com TDK/www.tdk.com TDK/www.tdk.com Murata/www.murata.com Murata/www.murata.com Murata/www.murata.com Part Number C1005X5R0J105M C1608X5R0J475K C2012X5R0J106M GRM155R60J105KE19B GRM188R60J475KE19 GRM21BR60J106KE19L
off all of the output switches to prevent the output voltage from rising further. When the output decreases below 5.5V, the device resumes normal operation. ___________________OVERCURRENT PROTECTION The over current protection circuitry monitors the average current out of the VOUT = 50mV (Torch Mode) pin. If the average output current exceeds approximately 1Amp, then the over current protection circuitry shuts off the output switches to protect the chip. _____________________COMPONENT SELECTION The SP6685 charge pump circuit requires 3 capacitors: 4.7F input, 1F output and 1F fly capacitor are typically recommended. For the input capacitor, a larger value of 10F will help reduce input voltage ripple for applications sensitive to ripple on the battery voltage. All the capacitors should be surface mount ceramic for low lead inductance necessary at the 2.4MHz switching frequency of the SP6685 and to obtain low ESR, which improves bypassing on the input and output and improves output voltage drive by reducing output resistance. Ceramic capacitors with X5R or X7R temperature grade are recommended for most applications. A selection of recommended capacitors is included in Table 1 below.
Capacitance/ Voltage 1uF/6.3V 4.7uF/6.3V 10uF/6.3V 1uF/6.3V 4.7uF/6.3V 10uF/6.3V
Capacitor Size/Type/Thickness 0402/X5R/0.5mm 0603/X5R/0.9mm 0805/X5R/1.35mm 0402/X5R/0.55mm 0603/X5R/0.9mm 0805/X5R/1.35mm
ESR at 100KHz 0.03 0.02 0.02 0.03 0.02 0.02
Table 1: Recommended Capacitors
Date: 7/6/06 Rev B SP6685, 700mA Buck/BoostCharge Pump LED Driver (c) 2006 Sipex Corporation
12
COMPONENT SELECTION The input and output capacitors should be located as close to the VIN and VOUT pins as possible to obtain best bypassing, and the returns should be connected directly to the PGND pin or to the thermal pad ground located under the SP6685. The fly capacitor should be located as close to the C1 and C2 pins as possible. See typical circuit layout (page 13) for details on the recommended layout. To obtain lower output ripple, the COUT value can be increased from 1F to 2.2F or 4.7F with a corresponding decrease in output ripple as shown in the Typical Performance Characteristic curves. For output currents of 500mA to 700mA, the recommended CFC fly capacitor value of 1F should be used. Output currents in Flash of 100mA to 400mA can use a 0.47F CFC but a minimum 1F COUT is still needed. _______________________ RESISTOR SELECTION The sense resistor RSENSE is determined by the value needed in the Torch mode for the desired output current by the equation: RSENSE = VFB/ IOUT where VFB = 50mV (Torch Mode) Once the RSENSE resistor has been selected
Part Reference RSET RSET RSET RSET RSET RSET RSET RSET RSET RSET RSENSE RSENSE RSENSE RSENSE RSENSE
Table 2: Resistor values and sizes
Date: 7/6/06 Rev B SP6685, 700mA Buck/BoostCharge Pump LED Driver (c) 2006 Sipex Corporation
for Torch mode, the VFB voltage can be selected for Flash mode using the following equation: VFB = IOUT * RSENSE (Flash Mode) where IOUT is for Flash Mode. Next, the RSET resistor can be selected for Flash mode using the following equation: RSET = (1.26V/ VFB)*11.2K (Flash Mode) For an example of 200mA Torch mode and 600mA Flash mode, the values RSENSE = 0.25, VFB = 150mV (Flash Mode), and RSET = 94K are calculated. The power obtained in the Flash mode would be: PFLASH = VFB *IOUT = 150mV*600mA = 90mW. The typical 0603 surface mount resistor is rated 1/10 Watt continuous power and 1/5 Watt pulsed power, more than enough for this application. For other applications, the PFLASH power can be calculated and resistor size selected. The RSENSE resistor is recommended to be size 0603 for most applications. The range of typical resistor values and sizes are shown here in Table 2.
Size 0402 0402 0402 0402 0402 0402 0402 0402 0402 0402 0603 0603 0603 0603 0603 Manufacturers any any any any any any any any any any Panasonic or Panasonic or Panasonic or Panasonic or Panasonic or
Value 68k 75k 82k 91k 100k 110k 120k 130k 140k 150k 0.22 0.27 0.33 0.39 0.47
Tolerance 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
Vishay Vishay Vishay Vishay Vishay
13
EVALUATION BOARD CIRCUIT LAYOUT
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
(c) 2006 Sipex Corporation
14
PACKAGE: 10 PIN DFN
D D/2 o E/2
A
E
(A3) A1
Seating Plane
SIDE VIEW
Pin1 Designator to be within this INDEX AREA (D/2 x E/2)
TOP VIEW
D2 D2/2
1 2 3 4 5
INDEX AREA (D/2 x E/2)
E2/2 E2
L
10 9 8 7 6
K e b
BOTTOM VIEW
3x3 10 Pin DFN SYMBOL
JEDEC MO-229
VARIATION VEED-5 Dimensions in Inches Conversion Factor: 1 Inch = 25.40 mm MIN NOM MAX 0.032 0.036 0.039 0.000 0.001 0.002 0.008 REF 0.008 0 14 0.008 0.010 0.012 0.119 BSC 0.087 0.106 0.119 BSC 0.056 0.069 0.020 BSC 0.012 0.016 0.020 JL Aug09-05 / RevA
(c) 2006 Sipex Corporation
Dimensions in Millimeters: Controlling Dimension MIN 0.80 0.00 MAX 1.00 0.05 14 0.30 2.70 1.75 0.50
A A1 A3 K o
NOM 0.90 0.02 0.20 REF 0.20 0 b 0.18 0.25 D 3.00 BSC D2 2.20 E 3.00 BSC E2 1.40 e 0.50 BSC L 0.30 0.40 SIPEX Pkg Signoff Date/Rev:
Date: 7/6/06 Rev B
SP6685, 700mA Buck/BoostCharge Pump LED Driver
15
ORDERING INFORMATION
Part Number Operating Temperature Range Package Type
SP6685ER .................................................. -40C to +85C ........................................................... 10 Pin DFN SP6685ER/TR ............................................ -40C to +85C .......................................................... 10 Pin DFN Available in lead free packaging. To order add "-L" suffix to part number. Example: SP6685ER/TR = standard; SP6685ER-L/TR = lead free /TR = Tape and Reel Pack quantity is 3,000 for DFN.
Sipex Corporation Headquarters and Sales Office 233 South Hillview Drive Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600 Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Date: 7/6/06 Rev B SP6685, 700mA Buck/BoostCharge Pump LED Driver (c) 2006 Sipex Corporation
16

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