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LTC3255 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3255
Description  Wide VIN Range Fault Protected 50mA Step-Down Charge Pump
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3255 Datasheet(HTML) 4 Page - Linear Technology

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LTC3255
4
3255f
For more information www.linear.com/LTC3255
TYPICAL PERFORMANCE CHARACTERISTICS
FB Pin Regulation Voltage
vs Input Voltage (IOUT = 1mA)
FB Pin Regulation Voltage
vs Input Voltage (IOUT = 50mA)
FB Pin Regulation Voltage
vs Temperature
Operating Mode Transition
Voltage vs Input Voltage
(IOUT = 5mA)
Operating Mode Transition
Voltage vs Input Voltage
(IOUT = 50mA)
Typical Minimum VIN – 2 • VOUT
Compliance Required for Shunt
Mode Operation
Input Operating Current
vs Input Voltage
Input Operating Current
vs Temperature
Input Shutdown Current
vs Input Voltage
TA = 25°C, unless otherwise noted.
VIN (V)
5
0
5
15
20
25
50
35
15
25 30
50
3255 G01
10
40
45
30
10
20
35 40 45
SHUNT = GND
VOUT = 5V
TA = 25°C
TEMPERATURE (°C)
–60
0
5
15
20
25
50
35
0
60
90
120
3255 G02
10
40
45
30
–30
30
150
VIN = 12V
VOUT = 5V
SHUNT = GND
VIN (V)
0
0
5
10
15
20
30
10
20
30
40
3255 G03
50
60
150°C
25
EN = GND
125°C
–55°C
25°C
VIN (V)
5
1.200
1.208
1.216
1.224
25
3255 G04
1.192
1.184
1.196
1.204
1.212
1.220
1.188
1.180
1.176
10 15 20
30 35 40 45 50
IOUT = 1mA
VOUT = 5V
SHUNT = GND
–60°C
25°C
105°C
150°C
VIN (V)
5
1.200
1.208
1.216
1.224
25
3255 G05
1.192
1.184
1.196
1.204
1.212
1.220
1.188
1.180
1.176
10 15 20
30 35 40 45 50
IOUT = 50mA
VOUT = 5V
SHUNT = GND
–60°C
25°C
105°C
TEMPERATURE (°C)
–60
1.192
1.216
1.220
1.224
0
60
90
3255 G06
1.184
1.208
1.200
1.188
1.212
1.176
1.180
1.204
1.196
–30
30
120 150
VIN = 12V
IOUT = 1mA
VOUT = 5V
VOUT (V)
2
17
21
25
10
3255 G07
13
9
15
19
23
11
7
5
4
6
8
3
11
5
7
9
12
SHUNT = GND
2:1 MODE
1:1 MODE
TRANSITION
REGION
•
VOUT (V)
2
17
21
25
10
3255 G08
13
9
15
19
23
11
7
5
4
6
8
3
11
5
7
9
12
SHUNT = GND
2:1 MODE
1:1 MODE
TRANSITION
REGION
•
TEMPERATURE (°C)
–60
2.5
2.6
2.8
2.9
3.0
3.5
3.2
0
60
90
120
3255 G09
2.7
3.3
3.4
3.1
–30
30
150
IVIN = 20mA
VOUT = 2.5V
VOUT = 3.3V
VOUT = 5V
VOUT = 12V



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