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IMP38C44EPA Datasheet(PDF) 5 Page - A1 PROs co., Ltd.

Part # IMP38C44EPA
Description  BiiCMOS Currentt--Mode BiiCMOS Currentt--Mode
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Manufacturer  A1PROS [A1 PROs co., Ltd.]
Direct Link  http://www.a1pros.co.kr
Logo A1PROS - A1 PROs co., Ltd.

IMP38C44EPA Datasheet(HTML) 5 Page - A1 PROs co., Ltd.

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IMP38C/HC/42/3/4/5
IMP38C/HC/42/3/4/5
© 2000 IMP, Inc.
PWM Controllers
5
Electrical Characteristics
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Current Sense
Gain
AVOL
Notes 1, 2 and 3
2.90
3.00
3.10
V/V
Over Current Protection Threshold
Vcomp = max, Note 2
0.9
0.98
1.1
V
Power Supply Rejection Ratio
PSRR
VSTART
≤ VCC ≤ 18V
70
dB
Input Bias Current
IB
– 0.1
– 2.0
µA
Delay to Output
TPD
VFB = 0V, ISNS 0V to 2V, CL = 1nF
50
65
ns
Output
IMP38C4x
ON Resistance, High
RDS (ON)
ISOURCE = 0.2A
20
ON Resistance, Low
ISINK = 0.2A
11
IMP38HC4x
ON Resistance, High
RDS (ON)
ISOURCE = 0.2A
10
ON Resistance, Low
ISINK = 0.2A
5.5
Peak Drive Current
HC devices
1.0
A
H devices
0.5
IMP38C4x Rise Time
TR
TA = 25
°C, CL = 1nF
40
70
ns
IMP38C4x Fall Time
TF
TA = 25
°C, CL = 1nF
30
50
ns
IMP38HC4x Rise Time
TR
TA = 25
°C, CL = 1nF
20
50
ns
IMP38HC4x Fall Time
TF
TA = 25
°C, CL = 1nF
15
40
ns
Shoot-through Current
0mA
Undervoltage Lockout
Start Threshold
IMP38C42/4, IMP38HC42/4
13.5
14.5
15.5
V
IMP38C43/5, IMP38HC43/5
7.8
8.4
9.0
Minimum Operating Voltage
IMP38C42/4, IMP38HC42/4
8
9
10
V
IMP38C43/5, IMP38HC43/5
7.0
7.6
8.2
Pulse Width Modulator
Maximum Duty Cycle
IMP38C42/3, IMP38HC42/3,
94
96
%
Maximum Duty Cycle
IMP38C44/5, IMP38HC44/5
48
50
%
Minimum Duty Cycle
0%
Supply Current
Start-Up Current
VCC = 13V for IMP38C42/44, IMP38HC42/44
95
120
µA
VCC = 7.5V for IMP38C43/45, IMP38HC43/45
Operating Current
ICC
VFB = VIS = 0
0.5
1.5
mA
Unless otherwise noted, VCC = 15V, RT = 10k
Ω and CT = 3.3nF. Specifications are over the – 40°C to +85°C ambient temperature range.
Bold/blue
specifications indicate enhanced performance features.
Note 1. Guaranteed by design. Not 100% tested in production.
Note 2. Measured at trip point of VFB = 0V.
Note 3. Gain is defined as:
s
d
l
o
h
s
e
r
h
T
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4
.
8
t
a
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V
6
.
7
=
m
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i
n
i
M
g
n
i
t
a
r
e
p
O
V
5
.
4
1
t
a
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-t
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0
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9
=
m
u
m
i
n
i
M
g
n
i
t
a
r
e
p
O
%
6
9
o
t
%
03
4
C
H
/
3
4
C
8
3
P
M
I2
4
C
H
/
2
4
C
8
3
P
M
I
%
0
5
o
t
%
05
4
C
H
/
5
4
C
8
3
P
M
I4
4
C
H
/
4
4
C
8
3
P
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I
s
p
e
.
3
0
t
_
C
H
/
C
8
3
Table 1. Startup and Operating Voltage Selection Guide
A
V
V
, 0
V
0.8V
COMP
CS
CS
=≤
Note 4. Adjust VCC above the start threshold before setting at 15V.
Note 5. Output frequency equals the oscillator frequency for
IMP38C42/3 and IMP38HC42/3 devices. Output frequency
equals one-half the oscillator frequency for IMP38C44/5 and
IMP38HC44/5 devices.


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