RT9758 datasheet(30/61 Pages) RICHTEK

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RT9758

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

DS9758-03

May 2023

Bit

Bit Name

Default

WDT

RST

REG

RST

Type

Description

IN_VALID_

RECOVERY_

DEGLITCH

This bit only sets the deglitch time of fault

recovery from the OVP event in bypass

mode.

0 : 21ms (default)

1 : 100ms

SPREAD_

SPECTRUM

Adjust switching frequency for EMI reduction.

0 : Normal (default)

1 : Enable spread spectrum

5:3

FSW

100

Set switching frequency in DIV2 and reverse

DIV2 mode.

000 : 300kHz

001 : 450kHz

010 : 600kHz

011 : 900kHz

100 : 500kHz (default)

101 : 750kHz

110 : 1000kHz

111 : 1500kHz

CHG_EN

Y/N

Enable converter (default = 1). If this bit is 0,

converter in standby mode.

If the device operates in bypass mode with

BEHAVIOR_AFTER_WDT bit is 1, this bit will

not be reset by WDT.

0 : Disable

1 : Enable (default)

REVERSE_

MODE_EN

This bit decides converter direction of power

delivery.

If this set to 1 and

OPERATION_MODE_SELECTION set to 1,

converter will operate in reverse DIV2 mode.

If this set to 1 and

OPERATION_MODE_SELECTION set to 0,

converter will operate in reverse bypass

mode.

0 : Converter operate in forward of power

delivery (default)

1 : Converter operate in reverse of power

delivery

OPERATION_

MODE_

SELECTION

This bit selects converter operation mode.

0 : Bypass mode (default)

1 : DIV2 mode

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