RT4805AWSC datasheet(19/22 Pages) RICHTEK

19 / 22 page

RT4805A

is a registered trademark of Richtek Technology Corporation.

DS4805A-02

April

2017

www.richtek.com

Name

Function

Addr

STATUS

Read IC status

0x05

Bit

Mode

name

Reset

Description

TSD

0 : Normal operation.

1 : Thermal shutdown tripped. The flag is reset after readout.

HOTDIE

0 : TJ < 115°C.

1 : TJ > 115°C.

DCDCMODE

0 : Device operates in PFM mode.

1 : Device operates in PWM mode.

OPMODE

0 : Device operates in pass-through mode.

1 : Device operates in dc/dc mode.

ILIMPT

0 : Normal operation.

1 : Indicates that the bypass FET current limit has triggered. This

flag is reset after readout.

ILIMBST

0 : Normal operation.

1 : Indicates that the average input current limit has triggered for

1.5ms in dc/dc boost mode. This flag is reset after readout.

FAULT

0 : Normal operation.

1 : Indicates that a fault condition has occurred. This flag is reset

after readout.

PGOOD

0 : Indicates the output voltage is out of regulation.

1 : Indicates the output voltage is within its nominal range. This bit is

set if the converter is forced in pass-through mode.

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