TPS40041DRBRG4 datasheet(9/38 Pages) TI

Part #	TPS40041DRBRG4

Description	LOW PIN COUNT, LOW VIN (2.5 V TO 5.5 V) SYNCHRONOUS BUCK DC-TO-DC CONTROLLER WITH ENABLE

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Manufacturer	TI [Texas Instruments]

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Block Diagram

OSCILLATOR

4

VDD

UVLO

2 V

6

8

7

5

VDD

LDRV

HI

LO

BOOT

HDRV

SW

LDRV

ADAPTIVE

GATE

DRIVE

PWM

LOGIC

2

3

COMP

FB

VDD/2

CURRENT LIMIT

COMP

EN

100ns

DELAY

VREF

RAMP

CLOCK

+

−

+

VDD

PAD

GND

Soft Start

FAULT

LOGIC

SW

Calibration

Circuit

ILIM SET

SDN

CLOCK

Reference

VREF

ILIM voltages

105 mV

180 mV

310 mV

VDD

Pre−bias

Thermal

Shutdown

1

Vdd−1.2v

EN

PWM COMP

0.6V

SDN

100K

PWM

0.6 V

TPS40040, TPS40041

SLUS700D – MARCH 2006 – REVISED DECEMBER 2007

Figure 18. Functional Block Diagram

9

Product Folder Link(s): TPS40040 TPS40041

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TPS40041DRBRG4 Datasheet(PDF) 9 Page - Texas Instruments

TPS40041DRBRG4 Datasheet(HTML) 9 Page - Texas Instruments

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