AP8802H

Description

The AP8802H is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to fifteen LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 8V to 60V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AP8802H switches at frequency up to 500kHz. This allows the use of small size external components, hence minimizing the PCB area needed. Maximum output current of AP8802H is set via an external resistor connected between the V_IN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.2V or lower at CTRL shuts down the output at SW and puts the device into a low-current standby state.

Feature(s)

• LED driving current up to 1A
• High efficiency up to 95%
• Operating input voltage up to 60V
• 5% nominal accuracy
• High switching frequency up to 700kHz
• PWM/DC input for dimming control
• Built-in output open-circuit protection
• SO-8EP is available in “Green” Molding Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant

Application(s)

• Commercial/industrial illumination
• Street lights
• Commercial refrigerators/freezers
• Appliances interior lighting
• Architecture Detail lighting