MP3385A – 4-STRING WLED CONTROLLER WITH I

MP3385A Rev. 1.01

www.MonolithicPower.com

19

8/29/2017

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2017 MPS. All Rights Reserved.

Table 4: Fault Indication Register

Addr: 0x03

Bit

Bit Name

Access

Default

Description

7

DIODEO_F

R

0b

Diode open fault indication bit.

1 = fault

0 = normal

6

OVP_F

R

0b

Output over-voltage fault indication bit.

1 = fault

0 = normal

5

OCP_F

R

0b

Converter over-current fault indication bit.

1 = fault

0 = normal

4

LEDS_F

R

0b

LED string short fault indication bit.

1 = fault

0 = normal

3

LEDO_F

R

0b

LED string open fault indication bit.

1 = fault

0 = normal

2

OTP_F

R

0b

IC over-temperature fault indication bit.

1 = fault

0 = normal

1:0

DIM1:0

R/W

11b

2 LSB bits of LED dimming brightness set bits.

Table 5: Internal LED Dimming Brightness Register

Addr: 0x04

Bit

Bit Name

Access

Default

Description

7:0

DIM9:2

RW

7Fh

8 MSB bits of LED dimming brightness set bits.

0.098% per step. Default value is 50% dimming brightness.