DC-DC high power lifting constant current IC external MOS

Solution Overview DC-DC High Power Lifting and Constant Current IC External MOS1. Product function descriptionAP5503 60V DC / DC buck-boost constant current driverdescriptionAP5503 is a current mode D

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Solution Overview DC-DC High Power Lifting and Constant Current IC External MOS

1. Product function description


AP5503 60V DC / DC buck-boost constant current driver

description

AP5503 is a current mode DC / DC buck-boost constant current driver

There is an external power NMOS for driving the LEDs. The AP5503 is used as an LED driver in buck, boost and buck-boost modes. The LED current is externally programmed with a 120mV sense resistor. At 500 kHz operating frequency, the external inductor and input/output capacitors can be small. Dimming can be analog, PWM or PWM conversion to analog and external capacitors.

The AP5503 is available in an MSOP-10 (FD) package.

2. Product application range

LED lights LED constant current drive flashlight LED lighting

3. Summary of product features

High voltage: VIN up to 60V, VOUT up to 60V

Can be used for buck, boost or buck-boost

Current mode PWM with 500KHz and 200KHz switching frequency

Simple dimming: converting analog, PWM or PWM into an analog signal with an external capacitor

Soft start to avoid inrush current

Programmable overvoltage protection limits output voltage

VIN undervoltage lockout and thermal shutdown

MSOP-10 (FD) package

4. Product picture

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