MP3332

MP3332 Rev. 1.0

www.MonolithicPower.com

24

5/1/2018

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Table 16: Fault Indication Register

Addr: 0x0E

Bit

Bit Name

Access

Default

Description

7

FT_VBATL

R

0

Low battery voltage fault bit. 0 = no fault. 1 = fault.

6

FT_OVP

R

0

Output over-voltage fault bit. 0 = no fault. 1 = fault.

5

FT_VOSC

R

0

VOUT-GND short fault bit. 0 = no fault. 1 = fault.

4

FT_LEDSC

R

0

LED short fault bit. 0 = no fault. 1 = fault.

3

FT_OTP

R

0

Junction over-temperature fault bit. 0 = no fault. 1 =

fault.

2

FT_TO

R

0

Flash time-out flag bit. 0 = no fault. 1 = flash timer is

triggered with hardware and level-trigger modes.

1

FT_TX

R

0

TX flag bit. 0 = no fault. 1 = TX is pulled high.

0

FT_IDC

R

0

Input DC current limit fault bit. 0 = no fault. 1 = fault.

Table 17: Fault Indication Register

Addr: 0x0F

Bit

Bit Name

Access

Default

Description

7:6

TBK0-1

R/W

01

Blinking time setting bits in indicator mode.

TBK [0-1] = 00, no blinking, LED constant on

TBK [0-1] = 01, Tblink = 128ms (default)

TBK [0-1] = 10, Tblink = 256ms

TBK [0-1] = 11, Tblink = 512ms

5:4

NA

R

NA

Reserved.

3

BAL_1AB2

R

0

1 = VLED1> = VLED2 + 125mV

0 = VLED1 < VLED2 + 125mV

2

BAL_2AB1

R

0

1 = VLED2> = VLED1 + 125mV

0 = VLED2 < VLED1 + 125mV

1

FT_LEDHOT

R

0

NTC fault bit. 0 = no fault. 1 = fault.

0

FT_LEDOP

R

0

LED open fault bit. 0 = no fault. 1 = fault.