MP3312 － 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER

MP3312 Rev. 1.02

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7

1/13/2015

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PIN FUNCTIONS

Pin #

Name

Description

A1

ISET

Full scale LED current set pin. Connecting a resistor between this pin and GND sets the

full scale current.

A2

LED2

LED2 current sink pin.

A3

LED1

LED1 current sink pin.

B1

PWM

PWM signal input pin. 5kHz to 100kHz PWM Signal is recommended to this pin to do the

analog current dimming. Low logic for >20ms shuts down the IC.

B2

COMP

Internal error amplifier output pin. Connect a capacitor to compensate the system.

B3

GND

GND pin.

C1

EN

Enable and 1wire input pin. High logic enables the IC and low logic >2.5ms shuts down the

IC.

C2

VIN

Power supply input pin. Connect a ceramic capacitor nearby this pin to bypass the IC.

C3

SW

Drain connection of the internal N-CH power MOSFET.