Data Sheet
GREEN MODE PWM CONTROLLER
AP384XG
Pin Configuration
P/M Package
(DIP-8/SOIC-8)
COMP
1
8
REF
FB
CS
2
3
4
7
6
5
VCC
OUTPUT
GND
RT/CT
Figure 2. Pin Configuration of AP384XG
Pin Description
Pin Number Pin Name
Function
1
2
COMP
FB
This pin is the Error Amplifier output and is made available for loop compensation.
The inverting input of the Error Amplifier. It is normally connected to the switching power
supply output through an external resistor divider.
3
4
CS
It is used either for current sense (normal mode) or skip cycle level selection (standby mode).
RT/CT
The oscillator frequency and maximum output duty cycle are programmed by connecting
resistor RT to REF and capacitor CT to ground.
5
6
GND
The ground pin.
OUTPUT This output directly drives the gate of a power MOSFET. Peak currents up to 1.0 A are
sourced and sunk by this pin.
7
8
VCC
REF
The power supply pin.
This is the reference output. It provides charging current for capacitor CT through resistor RT.
BCD Semiconductor Manufacturing Limited
Aug. 2005 Rev. 1. 2
2
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
