A High Efficiency, Stable and Reliable LED Lamp Constant Current Drive Control Chip

2021-11-02

SANDUN Furniture

Ap5103 wide voltage LED step-down constant current chip

Product Description:

Ap5103 is a high efficiency, stable and reliable LED constant current drive control chip, with built-in high-precision comparator, fixed off time control circuit, constant current drive circuit, etc. it is especially suitable for high-power LED constant current drive.

Ap5103 adopts esop8 package, and the heat sink is internally connected to the SW pin. The current flowing through the LED lamp is set by adjusting the resistance value detected by the external current. It supports external voltage linear dimming, and the high current can reach 3.5A.

Ap5103 adopts the peak current control mode with fixed off time. Its working frequency can reach 300kHz, which can reduce the volume of external inductance and filter capacitor, improve efficiency and save PCB area. The off time is very small, 620ns. It can be adjusted through external capacitor, and the working frequency can also be adjusted according to user requirements. Add PWM signal at en end to adjust the brightness of LED lamp

characteristic:

â—† built in current sampling leading edge blanking circuit

â—† wide input voltage range: 5V 60V

â—† peak current sampling voltage: 250Mv

â—† built in 60V / 20A power tube and 5.6v voltage stabilizing tube

â—† brightness adjustable: PWM dimming at en end and linear dimming at dim end

Application: LED flashlight; Electric vehicle, motorcycle lamp lighting

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