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LTC3409 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3409
Description  600mA Low VIN Buck Regulator in 3mm 3mm DFN
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3409 Datasheet(HTML) 4 Page - Linear Technology

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LTC3409
4
3409fc
Efficiency/Power Lost
vs Load Current, VOUT = 1.8V
Efficiency vs Input Voltage
VOUT = 1.2V, Pulse Skip
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3409 G01
0
1: 2.5VIN, BURST
2: 3.6VIN, BURST
3: 4.2VIN, BURST
4: 2.5VIN, PULSE SKIP
5: 3.6VIN, PULSE SKIP
6: 4.2VIN, PULSE SKIP
7: POWER LOST, 2.5VIN, BURST
8: POWER LOST, 2.5VIN, PULSE SKIP
9: POWER LOST, 3.6VIN, BURST
10: POWER LOST, 3.6VIN, PULSE SKIP
11: POWER LOST, 4.2VIN, BURST
12: POWER LOST, 4.2VIN, PULSE SKIP
1
1
2
3
6
9
5
4
12
8
7
10
11
1.0
0.1
0.01
0.001
0.0001
INPUT VOLTAGE (V)
1.5
0
10
30
40
50
100
70
2.5
3.5
3409 G02
20
80
90
60
4.5
5.5
IOUT = 0.1mA
IOUT = 1mA
IOUT = 10mA
IOUT = 100mA
IOUT = 600mA
IOUT = 800mA
Efficiency vs Input Voltage
VOUT = 1.2V, Burst Mode Operation
INPUT VOLTAGE (V)
1.5
0
10
30
40
50
100
70
2.5
3.5
3409 G03
20
80
90
60
4.5
5.5
IOUT = 0.1mA
IOUT = 1mA
IOUT = 100mA
IOUT = 10mA
IOUT = 600mA
IOUT = 800mA
Efficiency vs Load Current
VOUT = 2.5V
Efficiency vs Load Current
VOUT = 1.2V
Reference Voltage
vs Temperature
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3409 G04
0
1
PULSE SKIP
BURST
2.7VIN
2.7VIN
4.2VIN
4.2VIN
3.6VIN
3.6VIN
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3409 G05
0
1
PULSE SKIP
BURST
1.6VIN
1.6VIN
3.1VIN
3.1VIN
2.5VIN
2.5VIN
TEMPERATURE (°C)
–50
0.616
0.618
110
3409 G06
0.615
0.614
0.613
0.612
0.611
0.610
0.609
0.608
0.617
–10
–30
30
10
70 90
130
50
150
(From Typical Application on the front page except for the resistive divider resistor values)
TYPICAL PERFORMANCE CHARACTERISTICS



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