AS3843N13 Просмотр технического описания (PDF) - Astec Semiconductor => Silicon Link
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AS3843N13 Datasheet PDF : 20 Pages
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AS384x
Current Mode Controller
Electrical Characteristics
Electrical characteristics are guaranteed over full junction temperature range (0 to 105¡C). Ambient temperature must be derated
based on power dissipation and package thermal characteristics. The conditions are: VCC = 15 V, RT = 10 k½, and CT = 3.3 nF, unless
otherwise stated. To override UVLO, VCC should be raised above 17 V prior to test.
Parameter
5 V Regulator
Output Voltage
Line Regulation
Load Regulation
Temperature Stability1
Total Output Variation1
Long-term Stability1
Output Noise Voltage
Short Circuit Current
2.5 V Internal Reference
Nominal Voltage
Line Regulation
Load Regulation
Temperature Stability1
Total Output Variation1
Long-term Stability1
Oscillator
Initial Accuracy
Voltage Stability
Temperature Stability1
Amplitude
Upper Trip Point
Lower Trip Point
Sync Threshold
Discharge Current
Duty Cycle Limit
Symbol Test Condition
Min.
Typ.
Max. Unit
VREG
PSRR
TCREG
VNOISE
ISC
VFB
PSRR
TCVFB
TJ = 25¡C, IREG = 1 mA
12 ² VCC ² 25 V
1 ² IREG ² 20 mA
Line, load, temperature
Over 1,000 hrs at 25¡C
10 Hz ² f ² 100 kHz, TJ = 25¡C
T = 25¡C; IREG = 1 mA
12 V ² VCC ² 25 V
1 ² IREG ² 20 mA
Line, load, temperature
Over 1,000 hrs at 125¡C
4.95
5.00
5.05
V
2
10
mV
2
10
mV
0.2
0.4 mV/¡C
4.85
5.15
V
5
25
mV
50
µV
30
100
180
mA
2.475
2.450
2.500
2
2
0.1
2.500
2
2.525
5
5
0.2
2.550
12
V
mV
mV
mV/¡C
V
mV
fOSC
TJ = 25¡C
47
52
57
kHz
12 V ² VCC ² 25 V
0.2
1
%
TCf
TMIN ² TJ ² TMAX
5
%
fOSC
VRT/CT peak-to-peak
1.6
V
VH
2.9
V
VL
1.3
V
VSYNC
400
600
800
mV
ID
7.5
8.7
9.5
mA
RT = 680 ½, CT = 5.3 nF, TJ = 25¡C
46
50
52
%
ASTEC Semiconductor
4
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