Diodes AP1686 - Manual

Preliminary Datasheet
Low-Power Off-line PSR LED Controller AP1686
Nov. 2012 Rev. 1.1 BCD Semiconductor Manufacturing Limited
1
General Description
The AP1686 is a high performance AC/DC power
supply controller for LED lighting application. The
device uses Pulse Frequency Modulation (PFM)
method to build discontinuous conduction mode
(DCM) flyback power supplies.
The AP1686 provides accurate constant voltage,
constant current (CV/CC) regulation without
requiring an opto-coupler and the secondary control
circuitry. It also eliminates the need of loop
compensation circuitry while maintaining good
stability. The AP1686 can achieve excellent
regulation and high average efficiency, yet meets
no-load consumption less than 30mW.
It also has an adjustable built-in line compensation
function to achieve tight CC.
The AP1686 is available in SOT-23-6 package.
Features
•
Primary Side Control for Tight Constant Current
and Constant Voltage
• 30mW No-load Input Power
• Bipolar Junction Transistor (BJT) Driving
• Open Circuit Protection
• Over Voltage Protection
• Short Circuit Protection
• SOT-23-6 Package
Applications
• LED
Driver
Figure 1. Package Type of AP1686
SOT-23-6