EL7536 Ver la hoja de datos (PDF) - Renesas Electronics

Número de pieza

componentes Descripción

Fabricante

EL7536

Monolithic 1A Step-Down Regulator

Renesas Electronics 

EL7536

Pin Descriptions

PIN NUMBER

PIN NAME

1

SGND

2

PGND

3

LX

4

VIN

5

VDD

6

RSI

7

EN

8

POR

9

VO

10

FB

PIN FUNCTION

Negative supply for the controller stage

Negative supply for the power stage

Inductor drive pin; high current digital output with average voltage equal to the regulator output voltage

Positive supply for the power stage

Power supply for the controller stage

Resets POR timer

Enable

Power on reset open drain output

Output voltage sense

Voltage feedback input; connected to an external resistor divider between VO and SGND for variable

output

Block Diagram

VDD

VO

124K

FB 5M

10pF

-

+

100K

EN

EN

10µF

CLOCK

1.4MHz

SOFT-

START

+

–

2.5V-

3.5V

BANDGAP

REFERENCE

SGND

RSI

PWM

COMPEN-

SATION

RAMP

GENERATOR

+

-

PWM

COMPARATOR

+

-

CURRENT

LIMIT

P-DRIVER

CONTROL

LOGIC

VIN

LX 1.8µ

1.8V

1A

UNDER-

VOLTAGE

LOCKOUT

TEMPERATURE

SENSE

POR

N-DRIVER

10µF

PGND

POR

100K

PG

FN7396 Rev 8.00

July 13, 2006

Page 3 of 9

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