3845GP 查看數據表（PDF） - BCD Semiconductor

零件编号

产品描述 (功能)

生产厂家

3845GP

GREEN MODE PWM CONTROLLER

BCD Semiconductor 

GREEN MODE PWM CONTROLLER

Electrical Characteristics (Continued)

4.7k

2N2222

1k

ERROR AMP

ADJUST

4.7k

100k

5k

ISENSE

ADJUST

RT

AP3842G

1 COMP

REF 8

2 FB

3 CS

VCC 7

OUTPUT 6

0.1µF

4 RT/CT

GND 5

Data Sheet

AP384XG

VREF

A

VCC

1K

1W

OUTPUT

0.1µF

GND

CT

Figure 4. Basic Test Circuit

Figure 4 is the basic test circuit for AP384XG. In testing, the high peak currents associated with capacitive loads

necessitate careful grounding techniques. Timing and bypass capacitors should be connected close to pin 5 in a

single point ground. The transistor and 5k potentiometer are used to sample the oscillator waveform and apply an

adjustable ramp to pin 3.

Aug. 2005 Rev. 1. 2

BCD Semiconductor Manufacturing Limited

7

Share Link: