SC185LEVB datasheet(10/18 Pages) SEMTECH

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SC185

Start Up (Enable) (V

OUT=3.3V), PSAVE Mode

Start Up (Enable) (V

OUT=3.3V) @Full Load

Start Up (Enable) (V

OUT=3.3V), forced PWM

Start Up into Pre-Biased Output (V

OUT=1.5V)

Start Up into Pre-Biased Output (V

OUT=3.3V)

Start Up (Enable) into Output Short Circuit

Start-up (V

IN=5.0V, VOUT=3.3V, 0A)-Auto

IN = 5.0V

OUT = 0A

Mode= Low

Ch1:V

Ch2: I

OUT

Ch3: V

OUT

Ch4: PGood

Start-up (V

IN=5.0V, VOUT=3.3V, 0A)-PWM

IN = 5.0V

OUT = 0A

Mode= Hi

Ch1:V

Ch2: I

OUT

Ch3: V

OUT

Ch4: PGood

Start-up (V

IN=5.0V, VOUT=3.3V, 4A)-All

IN = 5.0V

OUT = 4A

Ch1:V

Ch2: I

OUT

Ch3: V

OUT

Ch4: PGood

Start-up into Pre-biased Output (V

IN=5.0V, VOUT=1.5V, 0A)-PWM

IN = 5.0V

OUT = 0A

Mode= Hi

Ch1:V

Ch2: I

OUT

Ch3: V

OUT

Ch4: PGood

540mV

Start-up into Pre-biased Output (V

IN=5.0V, VOUT=3.3V, 0A)-PWM

IN = 5.0V

OUT = 0A

Mode= Hi

Ch1:V

Ch2: I

OUT

Ch3: V

OUT

Ch4: PGood

480mV

Start-Up into Shorted Output (V

IN=

5.0V, V

OUT=

1.5V)-PWM

IN = 5.0V

OUT = 0



Mode= Hi

Ch3

OUT

Ch1

Ch2

Ch4

Typical Waveforms (continued)

Circuit Conditions: C

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

SC185LEVB Datasheet(PDF) 10 Page - Semtech Corporation

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