Data Sheet
GREEN MODE PWM CONTROLLER
General Description
The AP384XG is a Green Mode PWM controller. It is
specially designed for off-line AC-DC adapter and bat-
tery charger applications where both needs for low
standby power and high efficiency in normal operation
are required. In a well designed product, the AP384XG
is capable to allow the system consuming only 0.5W
power in standby mode.
In normal operation, the AP384XG features adjustable
frequency by using an external resistor and capacitor
combination. When output power falls below a given
level, the IC automatically switches to the skip mode,
which works by skipping switching cycles. The
AP384XG also features low start-up and low standby
operating current for its special topology.
The AP384XG provides accurate protection against
over-temperature, over-current and maximal output
power.
The AP384XG is available in SOIC-8 and DIP-8
packages.
AP384XG
Features
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Green Mode PWM Controller to Support the
"Blue Angel" Norm
Adjustable Skip Cycle Mode Operation
Low Start-up Current: 50µA (Typ.)
Low Standby Operating Current: 6mA
Internal Leading Edge Blanking
Adjustable Oscillator Frequency up to 500KHz
Totem Pole Output
Under Voltage Lock Out (UVLO)
Over-Temperature Protection
Pin to Pin Replacement for AZ384XA
Applications
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Off-line Converter
DC-DC Converter
DVD/STB Power Supply
Power Adapter
CRT Monitor Power Supply
SOIC-8
DIP-8
Figure 1. Package Types of AP384XG
Aug. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
1
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
