SRP Hitachi Semiconductor, SRP Datasheet - Page 18
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SRP
Manufacturer Part Number
SRP
Description
High Speed Current Mode PWM Control IC for Switching Power Supply
Manufacturer
Hitachi Semiconductor
Datasheet
1.SRP.pdf
(31 pages)
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HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
18
Load Regulation Characteristics of Reference Voltage
C
6.0
5.5
5.0
7.5
T
4.0
9.5
9.0
8.5
8.0
UVL Threshold Voltage vs. Ambient Temperature
4.5
20
15
10
Discharge Current vs. R
5
0
20
0
0
Output current of Vref terminal (mA)
Minimum voltage of
triangular wave
R
Ta = 25 C
V
Ta = 25 C
V
Ambient temperature Ta ( C)
T
IN
IN
20
/C
0
= 15V
= 15V
T
1
terminal voltage V
V
V
TH
TL
20
40
HA17384S/H
Maximum voltage of
triangular wave
Vref short
protection
operates
Measured when
R
is externally supplied
2
T
/C
40
60
T
T
/C
terminal voltage
C
R
T
V
V
T
T
HA17385H
TH
TL
Terminal Voltage
= 3300pF
= 10k
60
3
CT
80
(V)
100
85
4
Line Regulation Characteristics of Reference Voltage
C
5.2
5.1
5.0
4.9
4.8
5.2
5.1
5.0
4.9
4.8
7.5
9.5
9.0
8.5
8.0
Reference Voltage vs. Ambient Temperature
T
Discharge Current vs. Ambient Temperature
0
20
20
Ta = 25 C
V
V
IN
IN
V
= 10V or more (HA17384S/H)
= 7.6V or more (HA17385H)
V
IN
Ambient temperature Ta ( C)
Ambient temperature Ta ( C)
IN
0
0
= 15V
=15 V
Supply voltage V
20
20
10
Measured when R
terminal voltage of 2 V is
externally supplied
40
40
60
60
20
IN
C
R
C
R
T
T
(V)
T
T
= 3300pF
= 10k
= 3300pF
= 10k
80
80
T
/C
T
105
105
30