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CS3972YTHA5 Folha de dados(PDF) 3 Page - Cherry Semiconductor Corporation

Nome de Peças CS3972YTHA5
Descrição Electrónicos  1.25A High Efficiency Switching Regulator
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Fabricante Electrônico  CHERRY [Cherry Semiconductor Corporation]
Página de início  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS3972YTHA5 Folha de dados(HTML) 3 Page - Cherry Semiconductor Corporation

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Package Pin Description
PACKAGE PIN #
PIN SYMBOL
FUNCTION
Typical Performance Characteristics
1.274
1.264
1.254
1.244
1.234
1.224
1.214
-50
-25
-0
25
50
75
100
125
150
Temperature (°C)
Reference Voltage vs. Temperature
47
45
43
41
39
37
33
-50
-25
-0
25
50
75
100
125
150
Temperature (°C)
35
Switching Frequency vs. Temperature
100
90
80
70
60
50
0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Switch Current (A)
10
40
30
20
1.8
2.0
Driver Current vs. Switch Current
97
96
95
93
92
91
90
-50
-25
-0
25
50
75
100
125
150
Junction Temperature (°C)
Maximum Duty Cycle
1.6
1.4
1.2
1.0
0.8
0.6
0
0
0.50
1.00
1.25
1.75
Switch Current (A)
0.4
0.2
2.0
0.25
0.75
1.50
Tj=25°C
Switch Saturation Voltage
16L
5L
8L
SO Wide
TO-220
PDIP
16
3
1
Gnd
Logic and power ground on TO-220. Logic ground only on 8L
PDIP.
21
2
VC
Control voltage can be used for frequency compensation, cur-
rent limit threshold, frequency synchronization, and soft start.
32
3
VFB
Feedback voltage is the negative input to the error amplifier.
1,4,5,6,7,8,
4
NC
No connection.
10,12,15
95
5
VIN
Supply input voltage with a range of 3V to 60V.
11
6
E1
Emitter One is a power ground which should always be con-
nected to logic ground since it is used as the negative input to
the current sense amp.
13
4
7
VSW
Collector of internal 75V NPN power switch.
14
8
E2
Emitter Two is a power ground which can be left disconnected
to reduce the switch rating to 625mA.


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