ST750A Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

ST750A

ADJUSTABLE STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS

STMicroelectronics 

CONNECTION DIAGRAM (top view)

ST750A

PIN DESCRIPTION

Pin N°

1

Symbol

SHDN

2

REF

3

SS

4

CC

5

IC

6

GND

7

LX

8

VCC

Name and Function

Shutdown control (active low): If connected to GND the IC is in shutdown.

Connect to VCC for normal operation (ON MODE)

Reference Output Voltage: (1.25V): Bypass to GND with a capacitor that does not

exceed 47nF

Soft Start: a capacitor between SS and GND provides soft-start and short-circuit

protections.

Compensation Capacitor Input: externally compensates the outer (voltage)

feedback loop. Connect to OUT with 330pF capacitor

Internal Connection: make no external connection to this pin

Ground

Switch Output. Drain of internal P-Channel Power MOSFET

Supply Voltage Input. Bypass to GND with 1µF ceramic capacitance and large

value electrolytic capacitor in parallel. The 1µF capacitor must be as close as

possible to the GND and VCC pins

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