MP3326

– 16-CHANNEL LED DRIVER WITH I2C AND SEPARATED PDIM/ADIM

MP3326 Rev. 1.0

www.MonolithicPower.com

24

1/4/2021

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

© 2021 MPS. All Rights Reserved.

Channel 1 PWM Dimming Duty Setting Register (LSB)

Addr: 0x0B

Bits

Bit Name

Access

Default

Description

7:4

RESERVED

R

0000

Reserved.

3:0

PWM1[3:0]

R/W

1111

Channel 1 LED current PWM dimming duty setting register, 4LSB.

The dimming duty only changes when the 8MSB are written.

Channel 1 PWM Dimming Duty Setting Register (MSB)

Addr: 0x0C

Bits

Bit Name

Access

Default

Description

7:0

PWM1[11:4]

R/W

11111111

Channel 1 LED current PWM dimming duty setting register, 8MSB.

The dimming duty only changes when the 8MSB are written.

Channel 2 LED Current Setting Register

Addr: 0x0D

Bits

Bit Name

Access

Default

Description

7:6

RESERVED

R

00

Reserved.

5:0

ICH2[5:0]

R/W

111111

Channel 2 LED current analog dimming register. The current can

be calculated with the following equation:

LED

Code

I

=

ISET

63



Channel 2 PWM Dimming Duty Setting Register (LSB)

Addr: 0x0E

Bits

Bit Name

Access

Default

Description

7:4

RESERVED

R

0000

Reserved.

3:0

PWM2[3:0]

R/W

1111

Channel 2 LED current PWM dimming duty setting register, 4LSB.

The dimming duty only changes when the 8MSB are written.

Channel 2 PWM Dimming Duty Setting Register (MSB)

Addr: 0x0F

Bits

Bit Name

Access

Default

Description

7:0

PWM2[11:4]

R/W

11111111

Channel 2 LED current PWM dimming duty setting register, 8MSB.

The dimming duty only changes when the 8MSB are written.

Channel 3 LED Current Setting Register

Addr: 0x10

Bits

Bit Name

Access

Default

Description

7:6

RESERVED

R

00

Reserved.

5:0

ICH3[5:0]

R/W

111111

Channel 3 LED current analog dimming register. The current can

be calculated with the following equation:

LED

Code

I

=

ISET

63

