RAA230232 Ver la hoja de datos (PDF) - Renesas Electronics

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componentes Descripción

Fabricante

RAA230232

16V Input, 3A, Dual Step-Down DC/DC Converter / BatteryBackup

Renesas Electronics 

RAA23022x RAA23023x

Detailed Description

Control Block

EN1, EN2 : ON/OFF setting

EN1

EN2

State

VREG

L

L

Shutdown

0V

(CH1 and CH2 stop)

L

H

CH1 Operation

CH2 Stop

5.0V

H

H

CH1 and CH2 Operation

5.0V

H

L

Ch1 Stop

CH2 Operation

5.0V

Note: L: Low level, H: High level

There is no pull-down resistor within EN1 and EN2 pin because of reducing power consumption at light load.

Fix EN1 and EN2 pin to high level or low.

x_autoPFM : AutoPFM mode/ PWM mode setting

x_autoPFM

Operation

L

Auto PFM mode (change automatically)

PFM mode at light load

PWM mode at heavy load

H

PWM mode (fixed)

Note: L: Low level, H: High level

There is no pull-down resistor within x_autoPFM pin because of reducing power consumption at light load.

Fix x_autoPFM pin to high level or low.

PGOOD : Power Good output

State

PGOOD

CH1 and CH2 stop

L

CH1 or CH2 operation

HiZ

Note: L: Low level, H: High level

When using this function, connect PGOOD pin to VREG, VOUT1, VOUT2, etc.

When VREG voltage falls under 3.7V, PGOOD pin becomes high impedance though CH1 and CH2 stop.

R18DS0017EJ0100 REV.1.00

Apr.21.2015

Page 15 of 30

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