SC461ULTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC461ULTRT

EcoSpeed® DC-DC Buck Controller with Integrated LDO

Semtech Corporation 

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SC461

Typical Characteristics (continued)

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

Switching — Power-Save Mode, No Load

External 5V bias, VIN = 12V, no load, PSV enabled

Transient Response — Power-Save Mode

External 5V bias, VIN = 12V, VOUT = 1.8V, Load 0A to 10A, PSV enabled

VOUT

(50mV/div)

DL

(5V/div)

LX

(10V/div)

Time (10ms/div)

VOUT

(50mV/div)

LOAD

(10A/div)

FB

(50mV/div)

LX

(10V/div)

Time (100µs/div)

Switching — Power-Save Mode, Light Load

External 5V bias, VIN = 12V, Load 1A, PSV enabled

Transient Response — Forced Continuous Mode

External 5V bias, VIN = 12V, VOUT = 1.8V, Load 0A to 10A, FCM enabled

VOUT

(50mV/div)

DL

(5V/div)

LX

(10V/div)

Time (10µs/div)

VOUT

(50mV/div)

LOAD

(10A/div)

FB

(50mV/div)

LX

(10V/div)

Time (100µs/div)

Switching — Forced Continuous Mode

External 5V bias, VIN = 12V, Load 10A, FCM enabled

VOUT

(50mV/div)

DL

(5V/div)

LX

(10V/div)

Time (10µs/div)

EN

(5V/div)

VOUT

(1V/div)

Output Shutdown

External 5V bias, VIN = 12V, VOUT = 1.8V, Load 1A

PGOOD

(5V/div)

LX

(10V/div)

Time (400µs/div)



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