SC286 datasheet(10/20 Pages) SEMTECH

Part #	SC286

Description	Dual Channel 4A Synchronous Step-Down Regulator

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Manufacturer	SEMTECH [Semtech Corporation]

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SC286

Typical Characteristics (continued)

Circuit Conditions: C

IN = 22µF/6.3V, COUT = 2 x 22µF/6.3V, CSS = 10nF. Unless otherwise noted, L = 1.0µH (TOKO: FDV0530S-1R0), each device

Start Up into Pre-Biased Output (V

OUT=1.5V)

Time (500ns/div)

s/div)

/div)

V

OUT (1V/div)

V

CTLx (5V/div)

I

OUT (5V/div)

PGOOD (5V/div)

Start Up into Pre-Biased Output (V

OUT=3.3V)

Time (500ns/div)

s/div)

/div)

V

OUT (2V/div)

V

CTLx (5V/div)

I

OUT (5V/div)

PGOOD (5V/div)

Start Up (CTL

X) — No Load

Time (500µs/div)

s/div)

/div)

V

OUT (2V/div)

V

CTLx (5V/div)

I

OUT (5A/div)

PGOOD (5V/div)

V

IN = 5V, = IOUT = 0; VOUT = 3.3V

Time (500µs/div)

s/div)

/div)

V

OUT (2V/div)

V

CTLx (5V/div)

I

OUT (5A/div)

PGOOD (5V/div)

V

IN = 5V, = IOUT = 0; VOUT = 3.3V

Start Up (CTL

X) — Full Load

Start Up into Output Short Circuit

Time (500ns/div)

s/div)

/div)

V

SS (1V/div)

LX (5V/div)

I

LX (2A/div)

V

OUT (500mV/div)

V

IN = 5V

10

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