SC508AULTRT Ver la hoja de datos (PDF) - Semtech Corporation

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componentes Descripción

Fabricante

SC508AULTRT

EcoSpeed® DC-DC Buck Controller with Integrated LDO

Semtech Corporation 

Typical Characteristics (continued)

Start-up — EN Input

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

EN (5V/div)

VOUT (1V/div)

PGOOD (5V/div)

LX (50V/div)

Time (1m�s�/�d�i�v)�

Start-up — SS ramp-up

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

SS (5V/div)

VOUT (1V/div)

PGOOD (5V/div)

LX (50V/div)

Time (1m�s�/�d�i�v)�

Start-up, Shutdown — ENL Input (VIN UVLO)

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

ENL (5V/div)

VOUT (1V/div)

PGOOD (5V/div)

LX (50V/div)

Time (4m�s�/�d�i�v)�

SC508/SC508A

Pre-Bias Start- up — EN Input

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

EN (5V/div)

VOUT (1V/div)

PGOOD (5V/div)

LX (50V/div)

Time (1m�s�/�d�i�v)�

Shutdown — EN Input

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

ENL (5V/div)

VOUT (1V/div)

PGOOD (5V/div)

LX (50V/div)

Time (1m�s�/�d�i�v)�

Over-current — Automatic Restart

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

SS (5V/div)

VOUT (1V/div)

IOUT (10A/div)

LX (50V/div)

Time (20m�s�/�d�i�v)�



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