SC194B datasheet(12/17 Pages) SEMTECH

Part #	SC194B

Description	Selectable 3.6V/3.3V/3.0V/2.5V 1A Synchronous Buck Converter

PDF	17 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SC194B

POWER MANAGEMENT

OUT vs. VIN

OUT vs. Temperature

Load Regulation

Typical Characteristics

Quiescent Current vs. Input Voltage

PSAVE Mode

2.5

3.5

4.5

55.5

VIN(V)

TA=85°C

TA=25°C

TA=-40°C

Quiescent Current vs. Input Voltage

PWM Mode

3.5

4.5

5.5

2.5

3.5

4.5

55.5

VIN (V)

TA=85°C

TA=-40°C

TA=25°C

N-Channel R

DSON vs. Input Voltage

0.10

0.12

0.14

0.16

0.18

0.20

0.22

2.7

3.2

3.7

4.2

4.7

5.2

VIN (V)

TA=85°C

TA=25°C

TA=-40°C

2.2

2.4

2.6

2.8

3.2

3.4

3.6

2.5

3.5

4.5

5.5

VIN (V)

VOUT=3.3V,PSAVE

VOUT=2.5V,PWM

VOUT=2.5V,PSAVE

VOUT=3.3V,PWM

Vin=5V, Vout=3.3V,PWM

3.278

3.28

3.282

3.284

3.286

3.288

3.29

3.292

0.2

0.4

0.6

0.8

1.2

1.4

1.6

IOUT (A)

VOUT = 3.3V

3.27

3.28

3.29

3.3

3.31

3.32

3.33

3.34

3.35

-50 -40 -30 -20 -10

TA (°C)

VIN=5.0V,PSAVE

VIN=5.0V,PWM

OUT=500 mA(PWM)/50 mA(PSAVE)

SC194B Datasheet(PDF) 12 Page - Semtech Corporation

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