FP7152

1A LED Driver with Internal Switch

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Rev. 0.64

1/14

General Description

The FP7152 is a continuous current mode inductive step down converter. It can drive single or

multiple series connected LEDs. The FP7152 includes the output switch and a high-side output current

sensing circuit, which use an external resistor to set the average output current. Output current can

also be adjusted by applying an external signal to the ‘ADJ’ pin. The ADJ pin accept either a DC

voltage or a PWM dimming waveform. The PWM dimming filter components are contained within the

chip. Applying a voltage under 0.2V to the ADJ pin will turn off the output.

The FP7152 is available in the SOT89-5L package, Its space-saving footprint occupys small PCB

area for miscellaneous application fields.

Features



1A Output Current



Internal 0.5

Ω 26V Power MOSFET Switch



Wide 7 to 26V Operating Input Range



20μA Shutdown Mode Current



Typical 4% Output Current Accuracy



Signal pin ON / OFF and Brightness Control



Adjustable Soft-Start



Up to 95% Efficiency



Up to 1MHz Switching Frequency



Internal Dimming Filter



Package: SOT89-5L

Applications



Low Voltage Halogen replacement LEDs



LED back-up lighting

Typical Application Circuit

RS

FP7152

LX

ADJ

GND

SD

L