IMP38C4X IMP Inc, IMP38C4X Datasheet - Page 5

• Manufacturer Part Number: IMP38C4X
• Description: BiCMOS Current-Mode PWM Controllers
• Manufacturer: IMP Inc

Unless otherwise noted, V
Bold/blue
Table 1. Startup and Operating Voltage Selection Guide
© 2000 IMP, Inc.
Note 1. Guaranteed by design. Not 100% tested in production.
Note 2. Measured at trip point of V
Note 3. Gain is defined as:
Current Sense
Gain
Over Current Protection Threshold
Power Supply Rejection Ratio
Input Bias Current
Delay to Output
Output
IMP38C4x
IMP38HC4x
Peak Drive Current
IMP38C4x Rise Time
IMP38C4x Fall Time
IMP38HC4x Rise Time
IMP38HC4x Fall Time
Shoot-through Current
Undervoltage Lockout
Start Threshold
Minimum Operating Voltage
Pulse Width Modulator
Maximum Duty Cycle
Maximum Duty Cycle
Minimum Duty Cycle
Supply Current
Start-Up Current
Operating Current
ON Resistance, High
ON Resistance, Low
ON Resistance, High
ON Resistance, Low
A
specifications indicate enhanced performance features.
=
∆
V
∆
COMP
V
CS
0
0
%
%
, 0 V
o t
o t
≤
9
5
6
0
CC
CS
%
%
≤
= 15V, R
0.8V
FB
T
= 0V.
= 10kΩ and C
R
R
PSRR
A
DS (ON)
DS (ON)
T
I
T
T
T
T
VOL
I
CC
PD
B
R
F
R
F
Notes 1, 2 and 3
Vcomp = max, Note 2
V
V
I
I
I
I
HC devices
H devices
T
T
T
T
IMP38C42/4, IMP38HC42/4
IMP38C43/5, IMP38HC43/5
IMP38C42/4, IMP38HC42/4
IMP38C43/5, IMP38HC43/5
IMP38C42/3, IMP38HC42/3,
IMP38C44/5, IMP38HC44/5
V
V
V
SOURCE
SINK
SOURCE
SINK
T
A
A
A
A
START
FB
CC
CC
FB
= 3.3nF. Specifications are over the – 40°C to +85°C ambient temperature range.
= 25°C, C
= 25°C, C
= 25°C, C
= 25°C, C
= V
= 0V, ISNS 0V to 2V, C
= 13V for IMP38C42/44, IMP38HC42/44
= 7.5V for IMP38C43/45, IMP38HC43/45
= 0.2A
= 0.2A
≤ V
IS
= 0.2A
= 0.2A
= 0
CC
I
I
M
M
L
L
L
L
≤ 18V
P
P
= 1nF
= 1nF
= 1nF
= 1nF
3
3
8
8
C
C
4
4
3
5
Note 4. Adjust V
Note 5. Output frequency equals the oscillator frequency for
H /
H /
C
C
4
4
3
5
L
IMP38C42/3 and IMP38HC42/3 devices. Output frequency
equals one-half the oscillator frequency for IMP38C44/5 and
IMP38HC44/5 devices.
= 1nF
I M P 3 8 C / H C / 4 2 / 3 / 4 / 5
I M P 3 8 C / H C / 4 2 / 3 / 4 / 5
CC
above the start threshold before setting at 15V.
PWM Controllers
Electrical Characteristics
2.90
13.5
0.9
1.0
0.5
7.8
7.0
94
48
8
I
I
M
M
P
P
3.00
0.98
– 0.1
14.5
5.5
8.4
7.6
0.5
3
3
70
50
20
10
40
30
20
15
96
50
95
11
0
9
8
8
C
C
4
4
2
4
H /
H /
C
C
4
4
3.10
– 2.0
15.5
120
1.1
9.0
8.2
1.5
65
70
50
50
40
10
2
4
0
3
8
C
V/V
mA
mA
µA
µA
H /
dB
ns
ns
ns
ns
ns
%
%
%
V
Ω
Ω
A
V
V
C
_
0 t
3
e .
p
s
5