MP3326

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

MP3326 Rev. 1.0

www.MonolithicPower.com

25

1/4/2021

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

© 2021 MPS. All Rights Reserved.

Channel 3 PWM Dimming Duty Setting Register (LSB)

Addr: 0x11

Bits

Bit Name

Access

Default

Description

7:4

RESERVED

R

0000

Reserved.

3:0

PWM3[3:0]

R/W

1111

Channel 3 LED current PWM dimming duty setting register, 4LSB.

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

Channel 3 PWM Dimming Duty Setting Register (MSB)

Addr: 0x12

Bits

Bit Name

Access

Default

Description

7:0

PWM3[11:4]

R/W

11111111

Channel 3 LED current PWM dimming duty setting register, 8MSB.

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

Channel 4 LED Current Setting Register

Addr: 0x13

Bits

Bit Name

Access

Default

Description

7:6

RESERVED

R

00

Reserved.

5:0

ICH4[5:0]

R/W

111111

Channel 4 LED current analog dimming register. The current can

be calculated with the following equation:

LED

Code

I

=

ISET

63



Channel 4 PWM Dimming Duty Setting Register (LSB)

Addr: 0x14

Bits

Bit Name

Access

Default

Description

7:4

RESERVED

R

0000

Reserved.

3:0

PWM4[3:0]

R/W

1111

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

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

Channel 4 PWM Dimming Duty Setting Register (MSB)

Addr: 0x15

Bits

Bit Name

Access

Default

Description

7:0

PWM4[11:4]

R/W

11111111

Channel 4 LED current PWM dimming duty setting register, 8MSB.

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

Channel 5 LED Current Setting Register

Addr: 0x16

Bits

Bit Name

Access

Default

Description

7:6

RESERVED

R

00

Reserved.

5:0

ICH5[5:0]

R/W

111111

Channel 5 LED current analog dimming register. The current can be

calculated with the following equation:

LED

Code

I

=

ISET

63

