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AS384X Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers

Part # AS384X
Description  Current Mode Controller
PDF  20 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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AS384X Datasheet(HTML) 5 Page - List of Unclassifed Manufacturers

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ASTEC Semiconductor
AS384x
Current Mode Controller
Electrical Characteristics (contÕd)
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: V
CC = 15 V, RT = 10 k½, and CT = 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 = 25¡C
2.475
2.500
2.525
V
Input Bias Current
I
BIAS
Ð0.1
Ð1
µA
Voltage Gain
A
VOL
2 ² V
COMP ² 4 V
65
90
1
dB
Transconductance
G
m
1
mA/mV
Unity Gain Bandwidth1
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, VCOMP = 1.1 V
2
6
mA
Output Source Current
I
COMPH
V
FB = 2.3 V, VCOMP = 5 V
0.5
0.8
mA
Output Swing High
V
COMPH
V
FB = 2.3 V, RL = 15 k½ to Ground
5
5.5
V
Output Swing Low
V
COMPL
V
FB = 2.7 V, RL = 15 k½ to Pin 8
0.7
1.1
V
Current Sense Comparator
Transfer Gain2,3
AV
CS
Ð0.2 ² V
SENSE ² 0.8 V
2.85
3.0
3.15
V/V
I
SENSE Level Shift
2
V
LS
V
SENSE = 0 V
1.5
V
Maximum Input Signal2
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
Ð1
Ð10
µA
Propagation Delay to Output1
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 Time1
t
R
C
L = 1 nF
50
150
ns
Fall Time1
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, VCC = 6 V
1.5
2.0
V
Over-Temperature Shutdown4
T
OT
125
¡C



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