SC197 datasheet(9/20 Pages) SEMTECH

Part #	SC197

Description	3.5MHz, 500mA Synchronous Dual Step-Down DC-DC Regulator

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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9 / 20 page

SC197

Typical Characteristics (continued)

Load Transient Response — 200 to 500mA

Time (20μs/div)

s/div)

/div)

LX (500mA/div)

OUT (100mV/div)

LOAD (500mA/div)

Line Transient Response — PWM

Time (40μs/div)

s/div)

/div)

LX (200mA/div)

OUT (100mV/div)

IN 500mV/div)

VID Transient Response — PWM

Time (20μs/div)

s/div)

/div)

CTL2 (5.0V/div)

OUT (500mV/div)

LX (200mA/div)

OUT = 1.2V to 1.8V transition, IOUT = 500mA

VID Transient Response — PSAVE

Time (100μs/div)

s/div)

/div)

CTL2-0 (5.0V/div)

OUT (500mV/div)

LX (200mA/div)

OUT = 1.2V to 1.8V transition, RLOAD = 120Ω

Line Transient Response — PSAVE

Time (40μs/div)

s/div)

/div)

LX (200mA/div)

OUT (100mV/div)

IN (500mV/div)

Shutdown Transient Response

Time (20μs/div)

s/div)

/div)

LX (200mA/div)

OUT (1V/div)

CTL3-0 (5V/div)

IN = 3.5 to 4.0V, VOUT = 1.8V, IOUT = 400mA

OUT = 1.8V

OUT = 1.8V, IOUT = 500mA

IN = 3.5 to 4.0V, VOUT = 1.8V, IOUT = 10mA

4.0V —

3.5 —

SC197 Datasheet(PDF) 9 Page - Semtech Corporation

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