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HA17451AFP Datasheet(PDF) 10 Page - Hitachi Semiconductor

Part # HA17451AFP
Description  Switching Regulator Controllers for DC/DC Converters
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HA17451AFP Datasheet(HTML) 10 Page - Hitachi Semiconductor

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HA17451AP/HA17451AFP
10
Oscillator Frequency Variation vs. Ambient Temperature
Oscillator Frequency vs. Timing Resistance
Standby Current vs. Supply Voltage
Supply Voltage VCC (V)
IO (mA)
tr, tf vs. IO
Undervoltage Lockout Threshold Voltage vs.
Ambient Temperature
15
10
5
0
–5
–10
–15
–20
0
25
50
75
85
Ω
V
= 6 V
R = 10 k
C = 330 pF
f
= 200 kHz
CC
T
T
OSC
C
= 330
pF
C
= 3300
pF
C
= 33000
pF
C
=150
pF
T
300
100
10
1
5
10
100
V
= 6 V
Ta = 25
°C
CC
T
T
T
Ta =
–20°
C
Ta =
25°C
Ta = 85
°C
16 15 14 13 12 11 10 9
1 2 34 5 6 78
HA17451A
A
7
6
5
4
3
2
1
0
010
20
30
40
16 15 141312 11 10 9
1 2 34 5 6 78
HA17451A
4.0
3.5
3.0
2.5
2.0
–20
0
255075
85
Vth
VtI
Ambient Temperature Ta (
°C)
Ambient Temperature Ta (
°C)
Timing Resistance (k
Ω)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
10
20
30
40
50
0
V
= 6 V
C = 330 pF
R = 10 k
Ta = 25
°C
Ω
T
T
Pin 7
or
Pin 10
tr
tf
90%
10%
tf
tr
CC


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