Preliminary Datasheet
GREEN MODE PWM CONTROLLER
General Description
The AP3101 is a green PWM controller operating in
current mode. It is specially designed for off-line AC-
DC adapter and battery charger applications where the
needs for low standby power and better protection
function are increasing.
The AP3101 features adjustable oscillator frequency in
normal operation, which is done by an external resis-
tor. It automatically switches to skip cycle mode when
output power drops below a given level. The IC also
features low start-up and operation current for its
BiCMOS process.
The AP3101 provides comprehensive protection fea-
tures including leading edge blanking, synchronized
slope compensation, over-current, over-temperature
and short circuit protection.
The AP3101 is available in 2 packages: SOIC-8 and
DIP-8.
AP3101
Features
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Green Current Mode PWM Controller
Adjustable Skip Level
Leading Edge Blanking (LEB)
Cycle by Cycle Current Limit
Built-in Short Circuit Protection
Built-in Synchronized Slope Compensation
Low Start-up/Operating Current: 30
µ
A/3mA
Adjustable Oscillator Frequency
Totem Pole Output Including Soft Driving
Under-Voltage Lockout (UVLO)
Accurate Over-Temperature Protection with Hys-
teresis
Applications
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Off-line AC-DC Adapter
Battery Charger Applications
SOIC-8
DIP-8
Figure 1. Package Types of AP3101
Apr. 2007 Rev. 1. 3
1
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
