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HA17384SPS Datasheet(PDF) 21 Page - Hitachi Semiconductor

Part No. HA17384SPS
Description  High Speed Current Mode PWM Control IC for Switching Power Supply
Download  31 Pages
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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HA17384SPS Datasheet(HTML) 21 Page - Hitachi Semiconductor

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HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
21
Ambient Temperature Ta (
°C)
Ambient temperature Ta (
°C)
Ambient temperature Ta (
°C)
Maximum ON Duty Du max (%)
Output load capacitance CL (pF)
Oscillation Frequency vs. Ambient Temperature
Operating Current vs. Maximum ON Duty
Rise/Fall Time of Output Pulse vs. Load Capacitance
Rise/Fall Time of Output Pulse vs. Ambient Temperature
VIN
(UVL1)
Vref
(UVL2)
PWM
OUTPUT
Condition
description
L
L
L
L
H
L
H
H
L
Standby
state
IC is in
the ON
state and
output is
fixed to
LO.
Available
to
output
Current Sensing Level vs. Ambient Temperature
Relationship Between Low Voltage Malfunction
Protection and PWM Output
Operation
state
Standby
state
H
L
65
25
0
25
50
75
100
VIN = 15V
fosc=50kHz
fosc=300kHz
VCS = 0V
VFB = 0V
250
0
1000
2000
3000
Fall
Time
tf
60
55
50
45
40
20
15
10
5
0
200
150
100
50
0
VIN = 15V
VCS = 0V
VFB = 0V
Ta = 25
°C
CT = 3300pF
RT = 10kΩ
4000
250
200
150
100
50
0
1.25
1.00
0.75
0.50
0.25
0
VIN = 15V
CL = 1000pF
CT = 3300pF
RT = 10kΩ
Dumax = 95%
VIN = 15V
VCS = 0V
VFB = 0V
CT = 3300pF
RT = 10kΩ
VIN = 15V
VFB = 0V
Rise
time
tr
CL = 1000pF
−20
105
60
80
40
20
0
−20
105
60
80
40
20
0
−20
105
60
80
40
20
0
CT = 0.033µF
RT = 680Ω
Dumax = 40%
Ta=25
°C
CL = 1000pF
Rise time tr
Fall Time tf
Measured when COMP terminal
voltage is externally supplied


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