AP5174 is a high-efficiency, stable and reliable LED lamp constant current drive chip, built-in high-precision comparator, fixed off-time control circuit, constant current drive circuit, etc., especially suitable for high-power LED constant current drive.
AP5174 is packaged in ESOP8, the heat sink is built-in to connect to the SW pin, and the current flowing through the LED lamp is set by adjusting the resistance of the external current detection resistor. It supports linear dimming of the external voltage, and the maximum current is 2.5A.
AP5174 adopts peak current detection and fixed off-time control mode, and the circuit works in two states of switch tube on and off.
Built-in temperature protection
Output short circuit protection
Adjustable off time
Built-in current sampling leading edge blanking current
High efficiency: up to 95%
Wide input voltage range: 5V-100V
Peak current sampling voltage: 250mV
Built-in 100V/10A power tube and 5.6V regulator tube
Adjustable brightness: PWM dimming on EN terminal and linear dimming on DIM terminal
High-power LED driver
Solar lighting system
Electric, motorcycle lighting
LED car work light
Application schematic diagram: