1x/1.5x

Charge Pump

Charge Pump

Control

Oscillator

Reference

I2C

PUC

CPLY 1P

CPLY1N

CPLY 2P

CPLY2N

EN

GND

VOUT

SCL

SDA

CLK32K

ADDR_SEL0

ADDR_SEL1

GND

G

R

B

INT

TRIG

GPO

Program

Register

Control

Register

VDD

1.25 MHz Qpump

8bit DAC

8-bit PWM

8bit DAC

8-bit PWM

HF PWM

Ext. PWM clock

32768 Hz (PWM)

TRIM

VDD

VDD

ENABLE

Controller / Sequencer

INT_AS_GPO

R_TO_BATT

8bit DAC

8-bit PWM

TPS68401, TPS68402

SLVSA68A – MARCH 2010 – REVISED JANUARY 2011

www.ti.com

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

FUNCTIONAL BLOCK DIAGRAM

2

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