MP3326

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

MP3326 Rev. 1.0

www.MonolithicPower.com

4

1/4/2021

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PIN FUNCTIONS

Pin #

Name

Description

1

RFSH/FLT

Refresh signal output or fault flag. If FLTEN = 0, the RFSH/FLT pin outputs a

synchronized signal set by the FRFSH register. If FLTEN = 1, the RFSH/FLT pin indicates

a fault condition, and this pin is pulled low if a fault is triggered.

2

EN

Enable. Pull EN low to disable the IC; pull EN high to enable the IC.

3

SCL

I2C interface clock input.

4

SDA

I2C interface data input.

5

ADDR

I2C address setting. Connect a resistor to ADDR and GND to configure the 4LSB of the

I2C address. There are 10 configurable addresses.

6

ISET

LED current setting. Connect a current-setting resistor from this pin to ground to configure

the current in each LED string.

7

LED1

LED channel 1 current input. Connect the LED channel 1 cathode to this pin.

8

LED2

LED channel 2 current input. Connect the LED channel 2 cathode to this pin.

9

LED3

LED channel 3 current input. Connect the LED channel 3 cathode to this pin.

10

LED4

LED channel 4 current input. Connect the LED channel 4 cathode to this pin.

11

LED5

LED channel 5 current input. Connect the LED channel 5 cathode to this pin.

12

LED6

LED channel 6 current input. Connect the LED channel 6 cathode to this pin.

13

LED7

LED channel 7 current input. Connect the LED channel 7 cathode to this pin.

14

GND

Ground.

15

LED8

LED channel 8 current input. Connect the LED channel 8 cathode to this pin.

16

LED9

LED channel 9 current input. Connect the LED channel 9 cathode to this pin.

17

LED10

LED channel 10 current input. Connect the LED channel 10 cathode to this pin.

18

LED11

LED channel 11 current input. Connect the LED channel 11 cathode to this pin.

19

LED12

LED channel 12 current input. Connect the LED channel 12 cathode to this pin.

20

LED13

LED channel 13 current input. Connect the LED channel 13 cathode to this pin.

21

LED14

LED channel 14 current input. Connect the LED channel 14 cathode to this pin.

22

LED15

LED channel 15 current input. Connect the LED channel 15 cathode to this pin.

23

LED16

LED channel 16 current input. Connect the LED channel 16 cathode to this pin.

24

VIN

Power supply input. VIN supplies the power to the IC, and must be locally bypassed.