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LTC3255 Datasheet(PDF) 5 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) 5 Page - Linear Technology

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LTC3255
5
3255f
For more information www.linear.com/LTC3255
VIN (V)
4
4.90
4.92
4.96
4.98
5.00
5.10
5.04
6
8 9
3255 G14
4.94
5.06
5.08
5.02
5
7
10 11
15
12 13 14
–60°C
25°C
125°C
SHUNT = GND
IOUT = 50mA
VIN (V)
10
11.75
11.80
11.90
11.95
12.00
12.25
12.10
14
18 20
3255 G15
11.85
12.15
12.20
12.05
12
16
22 24
30
26 28
–60°C
25°C
125°C
SHUNT = GND
IOUT = 50mA
TYPICAL PERFORMANCE CHARACTERISTICS
Output Ripple
Load Transient
2.5V Output Voltage
vs Falling Input Voltage
5V Output Voltage
vs Falling Input Voltage
3.3V Output Voltage
vs Falling Input Voltage
12V Output Voltage
vs Falling Input Voltage
3.3VOUT Efficiency
vs Input Voltage at 50mA Load
5VOUT Efficiency
vs Input Voltage at 50mA Load
5VOUT Efficiency
vs Output Current
TA = 25°C, unless otherwise noted.
VOUT
20mV/DIV
AC-COUPLED
40µs/DIV
3255 G10
VIN = 12V
VOUT = 3.3V
IOUT = 5mA
VOUT
50mV/DIV
AC-COUPLED
50mA
5mA
IOUT
40µs/DIV
3255 G11
VIN = 12V
VOUT = 3.3V
VIN (V)
2
2.45
2.46
2.48
2.49
2.50
2.55
2.52
4
6
7
3255 G12
2.47
2.53
2.54
2.51
3
5
8
9
10
–60°C
25°C
125°C
SHUNT = GND
IOUT = 50mA
VIN (V)
2
3.20
3.22
3.26
3.28
3.30
3.40
3.34
4
6
7
3255 G13
3.24
3.36
3.38
3.32
3
5
8
9
12
10 11
–60°C
25°C
125°C
SHUNT = GND
IOUT = 50mA
INPUT VOLTAGE (V)
4
60
70
80
20
3255 G16
50
40
30
10
8
12
16
6
10
14
18
20
100
90
SHUNT = GND
IDEAL LDO
LTC3255
INPUT VOLTAGE (V)
5
10
20
40
50
60
17 19 21 23
100
3255 G17
30
7
9 11 13 15
25
70
80
90
SHUNT = GND
IDEAL LDO
LTC3255
OUTPUT CURRENT (mA)
0.1
40
30
80
90
1
10
100
3255 G18
70
60
50
20
0
100
120
EFFICIENCY
POWER LOSS
VIN = 12V
80
60
40



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