EC4304

1A, Hysteretic, High Brightness

LED Driver with Internal Switch

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4B25N-Rev.F005

Pin Configuration

Typical Application

Pin Name

Pin Function

LX

Drain of NDMOS Switch.

GND

Ground for the IC. All voltages levels are measured with respect to this pin.

ADJ

Multi-Function ON/OFF and Brightness Control Pin:

-Analog signal input for analog control of PWM dimming.

-PWM signal input for digital PWM dimming.

ISENSE

Current Sense Pin: Sense LED String Current.

VIN

Power supply input pin. Connect a nominal (7V~40V) power supply to this pin. The

power- on-reset (POR) function monitors the input voltage by this pin. It is recommended

that a decoupling capacitor (4.7µF or Higher X7R Ceramic capacitor) be connected to the

GND for noise decoupling.