Datasheet

www.ti.com
TPS65810
TPS65811
SLVS658B – MARCH 2006 – REVISED FEBRUARY 2007
NAME PIN I/O DESCRIPTION EXTERNAL REQUIRED COMPONENTS
(SEE APPLICATION DIAGRAM)
HOT_RST 15 I/O Hardware reset input, reset generated Connect to an external push-button switch. Connect to external
when connected to ground pullup resistor.
INT 19 O Interruption pin, open-drain output Connect 100-k Ω external pullup resistor between INT and OUT
INT pin is LO when interrupt is requested by TPS65810.
ISET1 11 I Current set point when charging in auto External resistor from ISET1 pin to AGND1 pin sets charge
mode with AC selected. Pre-charge and current value
charge termination set point for all charge
modes
L1 46 O SM1 synchronous buck converter 3.3- µ H inductor to SM1 pin
power-stage output
L2 51 O SM2 synchronous buck converter 3.3- µ H inductor to SM2 pin
power-stage output
L3 39 O Drain of the integrated boost power-stage 4.7- µ H inductor to OUT pin, external Schottky diode to SM3 pin
switch
LDO0 32 O LDO0 output, fixed voltage 1- µ F (minimum) capacitor to AGND1
LDO1 37 O LDO1 output 1- µ F (minimum) capacitor to AGND1
LDO2 33 O LDO2 output 1- µ F (minimum) capacitor to AGND1
LDO3 28 O LDO3 output 2.2- µ F (minimum) capacitor to AGND2
LDO35_REF 30 I Linear regulators LDO3-5 reference filter 100-nF capacitor to AGND2
LDO4 27 O LDO4 output 2.2- µ F (minimum) capacitor to AGND2
LDO5 26 O LDO5 output 2.2- µ F (minimum) capacitor to AGND2
LDO_PM 10 O General purpose LDO output 1- µ F (minimum) capacitor to AGND1 pin
LED_PWM 36 O PWM driver output, open drain. Can be used to drive a keyboard backlight LED
OUT 8, 9 O Power-path output. Connect to system 10- µ F capacitor to AGND1 pin
main power rail (system power bus)
PGND1 45 – SM1 synchronous buck converter power Connect to Power ground plane
ground
PGND2 52 – SM1 synchronous buck converter power Connect to power ground plane
ground
PGND3 38 – White LED driver power ground input. Connect to a power ground plane
PWM 34 O PWM driver output, open drain. Can be used to drive a vibrator or other external functions
RED 55 O Programmable LED driver, open drain Connect to RED input of RGB LED
output, current sink output when active.
RESPWRON 21 O System reset, open-drain output 100-k Ω external pullup resistor to OUT. RESPWRON pin is LO
when TPS65810 is resetting the system.
RTC_OUT 4 O Low leakage LDO output. Can be 1- µ F (minimum) capacitor to AGND1 pin or supercapacitor
connected to a super-capacitor or
secondary cell, if used as a RTC backup
output.
SCLK 2 I I
2
C interface clock line 2-k Ω pullup resistor to OUT pin
SDAT 3 I/O I
2
C interface data line 2-k Ω pullup resistor to OUT pin
SIM 5 O General purpose LDO output 1- µ F (minimum) capacitor to AGND1 pin
SM1 44 I SM1 synchronous buck converter output LC filter: 10- µ F capacitor to PGND1 pin
voltage sense
SM2 49 I SM2 synchronous buck converter output LC filter: 10- µ F capacitor to PGND2 pin
voltage sense
SM3 42 I White LED driver output overvoltage Connect 1- µ F capacitor to PGND3 pin. Connect SM3 pin to the
detection positive side of white LED ladder.
SM3SW 40 I Integrated white LED duty cycle switch Connect to negative side of external LED ladder
input
SYS_IN 31 I System power bus low-voltage detection External resistive divider sets minimum system operational
voltage. TPS65810 enters sleep mode when voltage below
minimum system voltage threshold is detected. 1-nF filter
capacitor to AGND1 recommended.
Copyright © 2006 – 2007, Texas Instruments Incorporated Submit Documentation Feedback 19
Product Folder Link(s): TPS65810 TPS65811