參數(shù)資料
型號(hào)： AS2842
廠商： Electronic Theatre Controls, Inc.
英文描述： Current Mode Controller
中文描述： 電流模式控制器
文件頁(yè)數(shù)： 4/20頁(yè)
文件大?。?/td> 94K
代理商： AS2842
AS2842/3/4/5
Current Mode Controller
ASTEC Semiconductor
40
Electrical Characteristics
Electrical characteristics are guaranteed over full junction temperature range (-40 to 105
°
C ). Ambient temperature must be derated based
on power dissipation and package thermal characteristics. The conditions are: V
CC
= 15 V R
T
= 10 k
,
and C
T
= 3.3 nF, unless otherwise
stated. To override UVLO, V
CC
should be raised above 17 V prior to test.
Parameter
5 V Regulator
Symbol
Test Condition
Min
Typ
Max
Unit
Output Voltage
V
REG
T
J
= 25
°
C, I
REG
= 1 mA
4.95
5.00
5.05
V
Line Regulation
PSRR
12
≤
V
CC
≤
25 V
2
10
mV
Load Regulation
1
≤
I
REG
≤
20 mA
2
10
mV
Temperature Stability
1
TC
REG
0.2
0.4
mV/
°
C
Total Output Variation
1
Line, load, temperature
4.85
5.15
V
Long-term Stability
1
Over 1,000 hrs at 25
°
C
5
25
mV
Output Noise Voltage
V
NOISE
10 Hz
≤
f
≤
100 kHz, T
J
= 25
°
C
50
μ
V
Short Circuit Current
I
SC
30
100
180
mA
2.5 V Internal Reference
Nominal Voltage
V
FB
T = 25
°
C; I
REG
= 1 mA
2.475
2.500
2.525
V
Line Regulation
PSRR
12 V
≤
V
CC
≤
25 V
2
5
mV
Load Regulation
1
≤
I
REG
≤
20 mA
2
5
mV
Temperature Stability
1
TC
VFB
0.1
0.2
mV/
°
C
Total Output Variation
1
Line, load, temperature
2.450
2.500
2.550
V
Long-term Stability
1
Over 1,000 hrs at 125
°
C
2
12
mV
Oscillator
Initial Accuracy
f
OSC
T
J
= 25
°
C
47
52
57
kHz
Voltage Stability
12 V
≤
V
CC
≤
25 V
0.2
1
%
Temperature Stability
1
TC
f
T
MIN
≤
T
J
≤
T
MAX
5
%
Amplitude
f
OSC
V
RT/CT
peak-to-peak
1.6
V
Upper Trip Point
V
H
2.9
V
Lower Trip Point
V
L
1.3
V
Sync Threshold
V
SYNC
400
600
800
mV
Discharge Current
I
D
7.5
8.7
9.5
mA
Duty Cycle Limit
R
T
= 680
, C
T
= 5.3 nF, T
J
= 25
°
C
46
50
52
%
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