H3842S Datasheet, PDF (4/10 Pages) Hi-Sincerity Mocroelectronics – HIGH PERFORMANCE CURRENT MODE CONTROLERS

HI-SINCERITY
MICROELECTRONICS CORP.
Characteristics Curve
Spec. No. : HS200203
Issued Date : 2001.04.01
Revised Date : 2002.12.03
Page No. : 4/10
Oscillator Frequency & Timing Resistance
10000K
Maximum Duty Cycle & Timing Resistance
100
80
1000K _CT=1.0nF
CT=2.2nF
60
CT=4.7nF
100K
40
10K
20
1K
100
1000
10000
RT(Ω)
100000
0
100
1000
10000
RT(Ω)
100000
Oscillator Discharge Current & Temperate
9
8.5
Vi=15V
Vosc=2V
8
7.5
7
-50
-25
0
25
50
75
100 125
TA (^oC)
Current Sense Input Threshold & Error Amp
Output Voltage
1.2
Vcc=15V
1
0.8
0.6
Ta=25^oC
0.4
Ta=125^oC
Ta=-40^oC
0.2
0
0
2
4
6
8
Vo (V)
H3842S
Error Amp Open-Loop Gain and Phase &
Frequency
100
Φ
80
Gain
Vcc=15V
Vo=2V to 4V
RL=100K
30
Ta=25^oC
60
60
40
Phase
90
20
120
0
150
-20
10
180
100
1000 10000 100000 1000000 10000000
f (Hz)
Reference Voltage Change & Source Current
60
50
Vcc=15V
40
30
20
Ta=125^oC
Ta=25^oC
Ta=-40^oC
10
0
0
20
40
60
80
100
120
Iref (mA)
HSMC Product Specification