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LTC3429 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC3429
Description  600mA, 500kHz Micropower Synchronous Boost Converter with Output Disconnect
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3429 Datasheet(HTML) 3 Page - Linear Technology

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LTC3429/LTC3429B
3
3429fa
TYPICAL PERFOR A CE CHARACTERISTICS
Single-Cell to 3.3V Efficiency
(LTC3429 Only)
OUTPUT CURRENT (mA)
60
80
100
50
70
90
0.1
10
100
1000
3429 G01
40
0.01
1
100
0.001
0.1
10
0.0001
1
VIN = 1.5V
EFFICIENCY
POWER LOSS
VIN = 1.5V
VIN = 1.2V
VIN = 1.2V
OUTPUT CURRENT (mA)
60
80
100
50
70
90
0.1
10
100
1000
3429 G02
40
1
VIN = 3V
VIN = 3V
VIN = 2.4V
VIN = 2.4V
0.01
1
100
0.001
0.1
10
0.0001
EFFICIENCY
POWER LOSS
OUTPUT CURRENT (mA)
60
80
100
50
70
90
0.1
10
100
1000
3429 G03
40
1
VIN = 3V
VIN = 3V
VIN = 2.4V
VIN = 2.4V
0.01
1
100
0.001
0.1
10
0.0001
EFFICIENCY
POWER LOSS
2-Cell to 3.3V Efficiency
(LTC3429 Only)
2-Cell to 5V Efficiency
(LTC3429 Only)
(TA = 25°C unless otherwise specified)
Li-Ion to 5V Efficiency
(LTC3429 Only)
Efficiency vs Input Voltage
Burst Mode Output Current
Threshold vs Input Voltage
(LTC3429 Only)
OUTPUT CURRENT (mA)
60
80
100
50
70
90
0.1
10
100
1000
3429 G04
40
1
VIN = 3.6V
VIN = 3.6V
VIN = 4.2V
VIN = 4.2V
EFFICIENCY
POWER LOSS
0.01
1
100
0.001
0.1
10
0.0001
INPUT VOLTAGE (V)
0.5
40
50
60
70
80
90
100
1.5
2.5
3.5
4.5
3429 G05
VIN > VOUT
PMOS LDO
MODE
VOUT = 3.3V
IOUT = 50mA
INPUT VOLTAGE (V)
0.9
20
25
35
2.4
3.4
3429 G06
15
10
1.4
1.9
2.9
3.9
4.4
5
0
30
VOUT = 3.3V
L = 4.7µH
VOUT = 5V
No Load Input Current
vs Input Voltage (LTC3429 Only)
Maximum Load Current
Capability at Output 4% Below
Regulation Point
Minimum Start-Up Input Voltage
vs Load Current
INPUT VOLTAGE (V)
1.4
10
100
1000
2.4
3429 G07
0.9
4.4
1.9
2.9
3.4
3.9
VOUT = 3.3V
L = 4.7µH
VOUT = 5V
INPUT VOLTAGE (V)
0.5
0
100
200
300
400
1.5
2.5
3.5
4.5
3429 G08
500
600
12
3
4
VOUT = 3.3V
L = 4.7µH
VOUT = 5V
OUTPUT CURRENT (mA)
0
0.7
0.9
1.1
1.3
1.5
1.9
50
100
3429 G09
150
1.7
CURRENT
SINK LOAD
RESISTOR
LOAD



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