SC508 datasheet(8/32 Pages) SEMTECH

Part #	SC508

Description	EcoSpeed짰 DC-DC Buck Controller with Integrated LDO

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SC508/SC508A

8

Typical Characteristics (continued)

Start-up — EN Input

EN (5V/div)

V

IN = 42V, VOUT = 1.8V, IOUT = 0A, PSAVE

Time (1m��i��

��i��

PGOOD (5V/div)

LX (50V/div)

Pre-Bias Start- up — EN Input

EN (5V/div)

V

IN = 42V, VOUT = 1.8V, IOUT = 0A, PSAVE

Time (1m��i��

��i��

V

OUT (1V/div)

PGOOD (5V/div)

Start-up — SS ramp-up

SS (5V/div)

V

IN = 42V, VOUT = 1.8V, IOUT = 0A, PSAVE, startup using EN input

Time (1m��i��

��i��

Shutdown — EN Input

ENL (5V/div)

V

IN = 5V, VOUT = 1.8V, IOUT = 1A, PSAVE

Time (1m��i��

��i��

PGOOD (5V/div)

LX (50V/div)

V

OUT (1V/div)

Over-current — Automatic Restart

V

IN = 42V, VOUT = 1.8V, External load = 15A

Time (20m��i��

��i��

I

OUT (10A/div)

LX (50V/div)

Start-up, Shutdown — ENL Input (V

IN UVLO)

ENL (5V/div)

V

IN = 42V, VOUT = 1.8V, IOUT = 1A, PSAVE

Time (4m��i��

��i��

V

OUT (1V/div)

V

OUT (1V/div)

V

OUT (1V/div)

PGOOD (5V/div)

LX (50V/div)

PGOOD (5V/div)

LX (50V/div)

V

OUT (1V/div)

SS (5V/div)

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SC508 Datasheet(PDF) 8 Page - Semtech Corporation

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