AP3844GM-E1 Просмотр технического описания (PDF) - BCD Semiconductor
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AP3844GM-E1 Datasheet PDF : 13 Pages
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Data Sheet
GREEN MODE PWM CONTROLLER
AP384XG
Electrical Characteristics
(VCC=15V, RT=10kΩ CT=3.3nF, TA= -40 to 85oC, unless otherwise specified.)
Parameter
Symbol
Conditions
Min Typ Max Unit
REFERENCE SECTION
Reference Output Voltage
Total Output Variation
VREF
Line Regulation
Load Regulation
Short Circuit Output Current
Temperature Stability
∆VREF
∆VREF
ISC
UNDER VOLTAGE LOCK OUT SECTION
TJ=25oC, IREF=1mA
Line, Load, Temp.
12V ≤ VCC ≤25V
1mA ≤ IREF ≤20mA
TA=25oC
4.95 5.00 5.05
V
4.9
5.10
V
4
15
mV
4
15
mV
-100 -180 mA
0.2
0.4 mV/oC
Start-up Threshold
AP3842G/AP3844G
15
16
17
V
AP3843G/AP3845G
7.8 8.4 9.0
Minimum Operating Voltage
AP3842G/AP3844G
8.5 10 11.5
V
AP3843G/AP3845G
7.0 7.6 8.2
TOTAL STANDBY CURRENT SECTION
Start-up Current
Operating Current
Standby Operating Current
Zener Voltage
PWM SECTION
VCC=14V
VFB=0, VCS=0, CL=1nF
VFB=2.7V, VCS=0.5V
ICC=25mA
50
80
µA
8
mA
6
mA
30
34
V
Maximum Duty Cycle
AP3842G/AP3843G
94
96
%
AP3844G/AP3845G
46
48
50
Minimum Duty Cycle
0
%
OSCILLATOR SECTION
Oscillation Frequency
Oscillator Amplitude
Temperature Stability
Voltage Stability
Discharge Current
f
VOSC
TJ=25oC
Pin RT/CT, peak to peak
12V ≤ VCC ≤ 25V
VRT/CT = 2V (Note 4)
47
52
57
KHz
1.7
V
2
%
0.2
1
%
8.5 9.5 10.5 mA
Note 4: This parameter is measured with RT=10kΩ to VREF, it contributes 0.3mA of current to the measured value.
So the total current flowing into the CT pin will be 0.3mA higher than the measured value approximately.
Aug. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
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