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LTC1174CS8 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC1174CS8
Description  High Efficiency Step-Down and Inverting DC/DC Converter
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1174CS8 Datasheet(HTML) 5 Page - Linear Technology

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5
LTC1174
LTC1174-3.3/LTC1174-5
1174fe
Supply Current in Shutdown
Switch Resistance vs
Input Voltage
Efficiency vs Input Voltage
DC Supply Current
Operating Frequency
vs VIN – VOUT
Off-Time vs Output Voltage
TYPICAL PERFOR A CE CHARACTERISTICS
INPUT VOLTAGE (V)
5
7
9
10
14
1174 G10
68
11
12
13
95
94
93
92
91
90
89
VOUT = 5V
L = 100
µH
COIL = CTX100-4
ILOAD = 300mA
IPGM = VIN
ILOAD = 100mA
IPGM = 0V
INPUT VOLTAGE (V)
0
8
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1174 G11
414
2
6
10
12
SHUTDOWN = 0V
TA = 25°C
CURRENT INTO PIN 6 ONLY
INPUT VOLTAGE (V)
0
500
450
400
350
300
250
200
150
100
50
0
4
8
10
1174 G12
2
6
12
14
ACTIVE MODE
IPGM = VIN
SLEEP MODE
IPGM = 0V
TA = 25°C
(VIN – VOUT) VOLTAGE (V)
0
9
1174 G13
2
57
2.0
1.5
1.0
0.5
0
1
3
4
6
8
VOUT = 5V
TA = 25°C
TA = 70°C
INPUT VOLTAGE (V)
4
12
1174 G14
6
8
10
14
16
18
20
TA = 25°C
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
LTC1174HV
LTC1174
OUTPUT VOLTAGE (V)
0
50
40
30
20
10
0
4
1174 G15
1
2
3
5
LTC1174-5
LTC1174HV-5
LTC1174-3.3
LTC1174HV-3.3
Line Regulation
Switch Leakage Current
vs Temperature
Efficiency vs Input Voltage
INPUT VOLTAGE (V)
0
6
4
2
0
–2
–4
–6
–8
–10
–12
–14
4
8
10
1174 G07
2
6
12
14
ILOAD = 100mA
IPGM = 0V
TEMPERATURE (
°C)
0
180
160
140
120
100
80
60
40
20
0
40
80
100
1174 G08
20
60
VIN = 13.5V
INPUT VOLTAGE (V)
5
14
1174 G09
7
9
12
95
94
93
92
91
90
89
88
87
68
10
11
13
L = 100
µH
L = 50
µH
VOUT = 5V
IPGM = 0V
ILOAD = 75mA
CORE = CTX (Kool M
µ®)



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