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LTC3422 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3422
Description  1.5A, 3MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3422 Datasheet(HTML) 4 Page - Linear Technology

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LTC3422
4
3422fa
TYPICAL PERFOR A CE CHARACTERISTICS
Single Cell to 3.3V Efficiency
2-Cell to 3.3V Efficiency
Li-Ion to 5V Efficiency
Burst Mode Operation
Load Transient Response
Inrush Current Control
Efficiency vs Frequency
Efficiency vs VIN
Start-Up Voltage vs Output Current
OUTPUT CURRENT (mA)
1
40
50
60
70
80
10
100
1000
3422 G07
30
20
10
0
90
100
VIN = 2.4V
VOUT = 3.3V
fOSC = 300kHz
fOSC = 3MHz
fOSC = 1MHz
INPUT VOLTAGE (V)
1
40
50
100
70
2
3
3.5
3422 G08
80
90
60
1.5
2.5
4
4.5
5
fOSC = 1MHz
VOUT = 3.3V
PWM AT 200mA LOAD
OUTPUT CURRENT (mA)
0
1.00
1.05
1.10
200
3422 G09
0.95
0.90
50
100
150
0.85
1.20
1.25
1.15
VOUT
50mV/DIV
AC COUPLED
SW
2V/DIV
INDUCTOR
CURRENT
0.5A/DIV
VIN = 2.4V
ILOAD = 20mA
2
µs/DIV
3422 G04
VOUT
100mV/DIV
AC COUPLED
IOUT
100mA/DIV
VIN = 2.4V
VOUT = 3.3V
COUT = 22µF
200
µs/DIV
3422 G05
300mA
50mA
VOUT
1V/DIV
INDUCTOR
CURRENT
100mA/DIV
VIN = 0V TO 2.4V
VOUT = 3.3V
COUT = 22µF
100mA LOAD CURRENT
500
µs/DIV
3422 G06
(TA = 25°C, unless otherwise specified)
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3422 G01
0
1
BURST
EFFICIENCY
VIN = 1.6V
VIN = 1.25V
VIN = 0.9V
PWM
EFFICIENCY
VIN = 1.6V
VIN = 1.25V
VIN = 0.9V
fOSC = 1MHz
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3422 G02
0
1
PWM
EFFICIENCY
VIN = 3V
VIN = 2.4V
VIN = 1.8V
fOSC = 1MHz
BURST
EFFICIENCY
VIN = 3V
VIN = 2.4V
VIN = 1.8V
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3422 G03
0
1
BURST
EFFICIENCY
VIN = 4.2V
VIN = 3.6V
VIN = 3.1V
PWM
EFFICIENCY
VIN = 4.2V
VIN = 3.6V
VIN = 3.1V
fOSC = 1MHz



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