TPS62172DSG datasheet(7/33 Pages) TI1

No de pièce	TPS62172DSG

Description	3-17V 0.5A Step-Down Converter with DCS-ControlTM

Download	33 Pages

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Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

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CIN

VIN

TPS62170

VIN

EN

GND

PGND

SW

VOS

PG

FB

COUT

2.2µH

R1

R2

R3

VOUT

TPS62170, TPS62171

TPS62172, TPS62173

www.ti.com

SLVSAT8A – NOVEMBER 2011 – REVISED APRIL 2012

PARAMETER MEASUREMENT INFORMATION

List of Components

REFERENCE

DESCRIPTION

MANUFACTURER

IC

17V, 1A Step-Down Converter, WSON

TPS62170DSG, Texas Instruments

L1

2.2uH, 1.4A, 3 x 2.8 x 1.2 mm

VLF3012ST-2R2M1R4, TDK

Cin

10µF, 25V, Ceramic

Standard

Cout

22µF, 6.3V, Ceramic

Standard

R1

depending on Vout

R2

depending on Vout

R3

100k

Ω, Chip, 0603, 1/16W, 1%

Standard

spacing

Figure 4. Measurement Setup

spacing

TYPICAL CHARACTERISTICS

Table of Graphs

DESCRIPTION

FIGURE

Efficiency

vs Output Current, vs Input Voltage

5 - 12

vs Output current (Load regulation)

13

Output voltage

vs Input Voltage (Line regulation)

14

vs Input Voltage

15

Switching Frequency

vs Output Current

16

Quiescent Current

vs Input Voltage

17

Shutdown Current

vs Input Voltage

18

Power FET RDS(on)

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

19, 20

Output Voltage Ripple

vs output Current

21

Maximum Output Current

vs Input Voltage

22

PWM-PSM-PWM Mode Transition

23, 24

Load Transient Response

25 - 28

Waveforms

Startup

29, 30

Typical Power Save Mode Operation

31

Typical PWM Mode Operation

32

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7

Product Folder Link(s): TPS62170 TPS62171 TPS62172 TPS62173

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