TPS62651YFFT datasheet(8/37 Pages) TI

Part #	TPS62651YFFT

Description	800-mA 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER WITH I2CTM COMPATIBLE INTERFACE IN CHIP SCALE PACKAGING

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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PARAMETER MEASUREMENT INFORMATION

Note: Theinternalregistersaresettotheirdefaultvalues

L =muRataLQM21PN1R0NGR

C1=muRataGRM155R60J475M(4.7 F,6.3V,0402,X5R)

C2=muRataGRM155R60J475M(4.7 F,6.3V,0402,X5R)

m

FB

C2

L1

VIN

TPS62650

SW

GND

EN

VSEL

SDA

SCL

C1

V

I

upto3.4Mbps

I2C Bus

GND

V

O

V =Roof

O

V =Floor

O

TYPICAL CHARACTERISTICS

Table of Graphs

TPS62650

TPS62651

SLVS808 – AUGUST 2009................................................................................................................................................................................................. www.ti.com

FIGURE

vs Output current

5, 6, 7, 8

η

Efficiency

vs Input voltage

9

Peak-to-peak output ripple

vs Output Current

10, 11, 12, 13

voltage

vs Output current

14, 15, 16, 17

VO

DC output voltage

vs Ambient temperature

18, 19

Measured output voltage

vs DAC target output voltage

20

PFM/PWM Boundaries

21

IQ

Quiescent current

vs Input voltage

22

ISD

Shutdown current

vs Input voltage

23

fS

Switching frequency

vs Input voltage

24

P-channel MOSFET rDS(on)

vs Input voltage

25

rDS(on)

N-channel MOSFET rDS(on)

vs Input voltage

26

Load transient response

27 - 38

Line transient PWM operation

39

Combined line and load transient

40

response

PWM operation

41

Power-save mode operation

42

Dynamic voltage management

43, 44

Output voltage ramp control

45

Start-up

46, 47

8

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TPS62651YFFT Datasheet(PDF) 8 Page - Texas Instruments

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