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LTC3111 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3111
Description  15V, 1.5A Synchronous Buck-Boost DC/DC Converter
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3111 Datasheet(HTML) 5 Page - Linear Technology

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LTC3111
5
3111fa
For more information www.linear.com/LTC3111
TYPICAL PERFORMANCE CHARACTERISTICS
800kHz PWM Mode No-Load Input
Current
Burst Mode No-Load Current with
VCC from VIN or Back-Fed from
VOUT with an Optional Diode
VCC Voltage vs VIN PWM Mode
No Load
VCC Voltage vs VCC Current
Normalized N-Channel MOSFET
Resistance vs VCC
Wide VIN to 12VOUT Efficiency
TA = 25°C, VIN = 5V, VOUT = 5V, unless otherwise specified
Wide VIN to 12VOUT Power Loss
12VIN to 12VOUT Efficiency at
f = 600kHz, 800kHz, 1MHz and
1.5MHz with L = 10µH
LOAD CURRENT (A)
0.0001
0.001
70
80
90
100
0.01
1
0.1
3111 G07
60
50
40
30
VIN = 2.7V
VIN = 5V
VIN = 12V
PWM
BURST
LOAD CURRENT (A)
0.0001
0.001
0.0001
0.001
0.1
10
0.01
0.1
1
10
3111 G08
0.01
1
VIN = 2.7V
VIN = 5V
VIN = 12V
BURST
PWM
LOAD CURRENT (A)
70
80
90
100
0.01
1
0.1
3111 G09
60
50
40
30
f = 600kHz
f = 800kHz
f = 1MHz
f = 1.5MHz
VIN (V)
2
12
16
20
12
31111 G10
8
4
10
14
18
6
2
0
4
6
8
3
13
5
7
11
10
9
14 15
VIN (V)
2
0
50
150
200
250
9 10 11 12 13 14
450
3111 G11
100
4
3
5 6 7 8
15
300
350
400
VCC FROM VIN
VCC FROM VOUT
VOUT = 5V
VIN (V)
2
3.7
4.1
4.5
7
3
8
4
9
5
10
6
11
3111 G12
3.3
2.9
3.5
3.9
4.3
3.1
2.7
2.5
12 13 14 15
CURRENT FROM VCC (mA)
0
3.9
4.0
4.1
60
70
30
40
50
3111 G13
3.8
3.7
10
20
80
3.6
3.5
4.2
VCC (V)
2.5
1.05
1.10
1.15
4.0
5.0
3111 G14
1.00
0.95
0.90
3.0
3.5
4.5
1.20
1.25
1.30
Normalized N-Channel MOSFET
Resistance vs Temperature
TEMPERATURE (°C)
–50
0.6
0.7
0.9
1.0
1.1
1.6
1.3
0
50
3111 G15
0.8
1.4
1.5
1.2
100
150



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