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AS3820

16-Channel White LED Controller for LCD Backlight

Rev. 1.1

Datasheet

www.dialog-semiconductor.com

15 of 52

05-Feb-2019

Addr: 0x03

Fault_1

Bit

Bit Name

Default

Access

Bit Description

Autotoff_uv

1...Undervoltage lockout:

If VDD < VDD_UVLchannels are turned OFF

by resetting CURRx-bits

Short_bist_en

RW_AC

1...Starts built-in self-test (BIST) for short

detection. Bit is cleared after BIST has

finished

5:4

Short_cmp_en

Short detection with comparators:

Not available in LQFP44

00...OFF

01...Enables short comp 1

10...Enables short comp 2

11...Enables short comp 1 and comp 2

Retrial_open

1... Retrial open detection after

autotoff_open was triggered

Autotoff_ot

Automatic output turn OFF at

overtemperature

0... Do not turn OFF current outputs on

overtemperature

1... Turn OFF current outputs on

overtemperature

Open_en

1... Enable open LED detection for all

channels

Autotoff_open

Automatic feedback turn OFF on open

LED detection

0... Do not turn OFF feedback on open

LED detection

1... Turn OFF feedback on open LED

detection

Table 3: Fault_1

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