AP1688
Description
The AP1688 is a high-performance AC/DC PFC and constant-current controller for universal mains LED driver applications. The device is a buck controller that operates as a boundary conduction mode (BCM) to achieve high efficiency and easy EMI.
An open loop algorithm is adopted in the AP1688, which makes the system achieve excellent line and load regulations with high PF for universal mains input.
The AP1688 features fast start-up, low start-up current, low operation current, and high efficiency. The device also has rich protection features including overvoltage, short- and open-circuit, overcurrent, and overtemperature protection.
The AP1688 is available in SO-8 package.
Pin Assignments
(Top View)
NC 1 VS 2 VA 3 CS 4
8 VCC 7 OUT 6 GND 5 FB
(SO-8/ M Package)
Features
- Optimized for Buck Topology
- Boundary Conduction Mode (BCM) Operation to Achieve High
Efficiency
- High Power Factor > 0.9
- High Efficiency > 90%
- System Current Accuracy: ±5%
- Good Line Regulation...
