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參數(shù)資料
| 型號： | HSMC3842 |
| 廠商： | HSMC CORP. |
| 英文描述： | HIGH PERFORMANCE CURRENT MODE CONTROLERS |
| 中文描述： | 高性能電流模式CONTROLERS |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 154K |
| 代理商： | HSMC3842 |
HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : HP200202
Issued Date : 1998.08.01
Revised Date : 2002.12.03
Page No. : 6/10
H3842P
HSMC Product Specification
Application Information
Open Loop Test Circuit
Oscillator and Output Waveforms
Error Amp Configuration
Under Voltage Lockout
RT
CT
4
5
6
7
8
5V REG
PWM
Clock
Oscillator
Id
Output
GND
CT
Output
Large RT / Small CT
CT
Output
Small RT / Large CT
Vcc
1
2
3
4.7K
1K
4.7K
5K
100K
RT
0.1uF
0.1uF
CT
1W
1K
Error Amp.
Adjust
I
Adjust
HPN2222A
COMP
RT/CT
V
Vcc
Output
Ground
Ground
Output
Vcc
Vref
1
2
3
4
5
6
7
8
REF
SENSE
I
SENSE
V
FB
A
H3842
High peak currents associated with capacitive loads necessitate careful grounding techniques. Timing and
bypass capacitors should be connected close to pin5 in a single point ground. The transistor and 5K
potentiometerare used to samplethe oscillator waveform and apply an adjustable ramp to pin3.
Zi
Zf
V
COMP
2.5V
1mA
1
2
FB
+
-
ON/OFF Command
To Rest Of IC
Von
Voff
H3842
16V
10V
Icc
<17mA
<0.5mA
Vcc
Voff
Von
Vi
7
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