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參數(shù)資料
| 型號： | AS3845NT |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Current Mode Controller |
| 中文描述： | 電流模式控制器 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 155K |
| 代理商： | AS3845NT |
5
ASTEC Semiconductor
AS384x
Current Mode Controller
Electrical Characteristics
(contd)
Electrical characteristics are guaranteed over full junction temperature range (0 to 105C). 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
Symbol
Test Condition
Min.
Typ.
Max.
Unit
Error Amplifier
Input Voltage
V
FB
T
J
= 25C
2.475
2.500
2.525
V
Input Bias Current
I
BIAS
D0.1
D1
μA
Voltage Gain
A
VOL
2 2 V
COMP
2 4 V
65
90
1
dB
Transconductance
G
m
1
mA/mV
Unity Gain Bandwidth
1
GBW
0.8
1.2
MHz
Power Supply Rejection Ratio
PSRR
12 2 V
CC
2 25 V
60
70
dB
Output Sink Current
I
COMPL
V
FB
= 2.7 V, V
COMP
= 1.1 V
2
6
mA
Output Source Current
I
COMPH
V
FB
= 2.3 V, V
COMP
= 5 V
0.5
0.8
mA
Output Swing High
V
COMPH
V
FB
= 2.3 V, R
L
= 15 k to Ground
5
5.5
V
Output Swing Low
V
COMPL
V
FB
= 2.7 V, R
L
= 15 k to Pin 8
0.7
1.1
V
Current Sense Comparator
Transfer Gain
2,3
AV
CS
D0.2 2 V
SENSE
2 0.8 V
2.85
3.0
3.15
V/V
I
SENSE
Level Shift
2
Maximum Input Signal
2
V
LS
V
SENSE
= 0 V
1.5
V
V
COMP
= 5 V
0.9
1
1.1
V
Power Supply Rejection Ratio
PSRR
12 2 V
CC
2 25 V
70
dB
Input Bias Current
I
BIAS
D1
D10
μA
Propagation Delay to Output
1
t
PD
85
150
ns
Output
Output Low Level
V
OL
I
SINK
= 20 mA
0.1
0.4
V
V
OL
I
SINK
= 200 mA
1.5
2.2
V
Output High Level
V
OH
I
SOURCE
= 20 mA
13
13.5
V
V
OH
I
SOURCE
= 200 mA
12
13.5
V
Rise Time
1
t
R
C
L
= 1 nF
50
150
ns
Fall Time
1
t
F
C
L
= 1 nF
50
150
ns
Housekeeping
Start-up Threshold
V
CC
(on)
3842/4
15
16
17
V
3843/5
7.8
8.4
9.0
V
Minimum Operating Voltage
V
CC
(min)
3842/4
9
10
11
V
After Turn On
3843/5
7.0
7.6
8.2
V
Output Low Level in UV State
V
OUV
I
SINK
= 20 mA, V
CC
= 6 V
1.5
2.0
V
Over-Temperature Shutdown
4
T
OT
125
C
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| AS3842D14T | Current Mode Controller |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS384R5FLF | 制造商:TT Electronics / IRC 功能描述:AS384R5FLF |
| AS384X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current Mode Controller |
| AS385 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
| AS385-1.23 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
| AS385-2.5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Reference |
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