HA17384SPS Datasheet, PDF (17/29 Pages) Hitachi Semiconductor – High Speed Current Mode PWM Control IC for Switching Power Supply

HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
UVL Threshold Voltage vs. Ambient Temperature
20
HA17384S/H
15
V_TH
HA17385H
10
V_TL
V_TH
V_TL
5
Line Regulation Characteristics of Reference Voltage
5.2
Ta = 25°C
C_T = 3300pF
V_IN = 10V or more (HA17384S/H) R_T = 10kΩ
V_IN = 7.6V or more (HA17385H)
5.1
5.0
4.9
0
−20 0 20 40 60
85
Ambient temperature Ta (°C)
4.8
0
10
20
30
Supply voltage V_IN (V)
Load Regulation Characteristics of Reference Voltage
6.0
Ta = 25°C
V_IN = 15V
C_T = 3300pF
R_T = 10kΩ
5.5
Reference Voltage vs. Ambient Temperature
5.2
V_IN = 15V
C_T = 3300pF
R_T = 10kΩ
5.1
5.0
Vref short
4.5
protection
operates
4.0
0
20 40 60 80 100
Output current of Vref terminal (mA)
C_T Discharge Current vs. R_T/C_T Terminal Voltage
9.5
Ta = 25°C Measured when
V_IN = 15V R_T/C_T terminal voltage
is externally supplied
9.0
Minimum voltage of
8.5 _{triangular wave}
Maximum voltage of
8.0
triangular wave
5.0
4.9
4.8
−20 0 20 40 60 80 105
Ambient temperature Ta (°C)
C_T Discharge Current vs. Ambient Temperature
9.5
V_IN=15 V
9.0
Measured when R_T/C_T
terminal voltage of 2 V is
externally supplied
8.5
8.0
7.5
0
1
2
3
4
R_T/C_T terminal voltage V_CT (V)
7.5
−20 0 20 40 60 80 105
Ambient temperature Ta (°C)
Rev.3.00 Jun 15, 2005 page 17 of 28