TPS62143RGTR datasheet(7/34 Pages) TI1

Part #	TPS62143RGTR

Description	3-V to 17-V 2-A Step-Down Converter in 3-mm 횞 3-mm QFN Package

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Manufacturer	TI1 [Texas Instruments]

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COUT

VOUT

CIN

L1

VIN

FB

PG

TPS62140

R1

R2

CSS

R3

VIN

AVIN

EN

SS/TR

DEF

FSW

SW

VOS

PG

FB

AGND

PGND

TPS62140

TPS62141, TPS62142, TPS62143

www.ti.com

SLVSAJ0

– NOVEMBER 2011

PARAMETER MEASUREMENT INFORMATION

List of Components

REFERENCE

DESCRIPTION

MANUFACTURER

IC

17-V, 2-A step-down converter, QFN

TPS62140RGT, Texas Instruments

L1

2.2-

µH, 3.1-A, 0.165 in × 0.165 in

XFL4020-222MEB, Coilcraft

Cin

10-

µF, 25-V, ceramic

Standard

Cout

22-

µF, 6.3-V, ceramic

Standard

Cs

3300-pF, 25-V, ceramic

R1

Dependent on Vout

R2

Dependent on Vout

R3

100-k

Ω, chip, 0603, 1/16W, 1%

Standard

Figure 4. Measurement Setup

TYPICAL CHARACTERISTICS

Table of Graphs

DESCRIPTION

FIGURE

Efficiency

vs Output Current, vs Input Voltage

5

–16

vs Output current (Load regulation), vs Input Voltage

Output voltage

17, 18

(Line regulation)

vs Input Voltage

19

Switching Frequency

vs Output Current

20

Quiescent Current

vs Input Voltage

21

Shutdown Current

vs Input Voltage

22

Power FET RDS(on)

vs Input Voltage (High-Side, Low-Side)

23, 24

Output Voltage Ripple

vs output Current

25

Maximum Output Current

vs Input Voltage

26

Power Supply Rejection Ratio (PSSR)

vs Frequency

27, 28

PWM-PSM-PWM Mode Transition

29

Load Transient Response

30

–32

Waveforms

Start-Up

33, 34

Typical PWM Mode Operation

35

Typical Power Save Mode Operation

36

vs Load Current

37

Maximum Ambient Temperature

vs Power Dissipation

38

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Product Folder Link(s): TPS62140 TPS62141 TPS62142 TPS62143

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