SC461 datasheet(9/31 Pages) SEMTECH

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SC461

Characteristics in this section are based on using the Detailed Application Circuit.

Switching — Forced Continuous Mode

Time (10µs/div)

External 5V bias, V

IN = 12V, Load 10A, FCM enabled

Switching — Power-Save Mode, Light Load

Time (10µs/div)

Switching — Power-Save Mode, No Load

Output Shutdown

VOUT

(1V/div)

PGOOD

(5V/div)

(10V/div)

Time (400µs/div)

Transient Response — Power-Save Mode

Time (100µs/div)

External 5V bias, V

IN = 12V, VOUT = 1.8V, Load 0A to 10A, PSV enabled

VOUT

(50mV/div)

LOAD

(10A/div)

(10V/div)

Transient Response — Forced Continuous Mode

Time (100µs/div)

VOUT

(50mV/div)

(10V/div)

LOAD

(10A/div)

Typical Characteristics (continued)

External 5V bias, V

IN = 12V, VOUT = 1.8V, Load 1A

External 5V bias, V

IN = 12V, Load 1A, PSV enabled

External 5V bias, V

IN = 12V, VOUT = 1.8V, Load 0A to 10A, FCM enabled

External 5V bias, V

IN = 12V, no load, PSV enabled

(5V/div)

VOUT

(50mV/div)

(10V/div)

VOUT

(50mV/div)

(5V/div)

(10V/div)

Time (10ms/div)

VOUT

(50mV/div)

(5V/div)

(10V/div)

(5V/div)

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