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LTC3409A Datasheet(PDF) 5 Page - Linear Technology

Part No. LTC3409A
Description  600mA Low VIN Buck Regulator in 3mm 3mm DFN
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LTC3409A Datasheet(HTML) 5 Page - Linear Technology

 
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LTC3409A
5
3409af
TYPICAL PERFORMANCE CHARACTERISTICS
(TA = 25°C, from Typical Application on the front page except for the resistive divider resistor values)
RDS(ON) vs Input Voltage
RDS(ON) vs Temperature
Dynamic Input Current
vs Input Voltage
Output Voltage
vs Load Current VIN = 1.6V
INPUT VOLTAGE (V)
1.5
0
0.05
0.15
0.20
0.25
3.5
5.5
0.45
3409A G10
0.10
2.5
4.5
0.30
0.35
0.40
MAIN
SWITCH
SYNCHRONOUS
SWITCH
TEMPERATURE (°C)
–50
0.35
0.40
0.50
0.55
25
75
3409A G11
0.30
0.25
–25
0
50
100
125
0.20
0.15
0.10
0.45
2.7VIN
4.2VIN
1.6VIN
MAIN SWITCH
SYNCHRONOUS SWITCH
2.7VIN
4.2VIN
1.6VIN
LOAD CURRENT (mA)
1.210
1.190
1.195
1.200
1.205
1.185
1.100
3409A G09
1.2VOUT, BURST
1.2VOUT, PULSE-SKIPPING
100
1000
10
1
INPUT VOLTAGE (V)
1.5
3500
1500
2000
2500
3000
500
1000
0
90
70
60
50
40
30
80
10
20
0
3.5
3409A G12
5.5
4.5
2.5
VFB = 1V
VFB = 1V
VOUT = 1.5V
IOUT = 0
VOUT = 1.5V
IOUT = 0
BURST
PULSE-SKIPPING
Dynamic Supply Current
vs Temperature, VIN = 3.6V,
VOUT = 1.5V, No Load
TEMPERATURE (°C)
–50
500
300
350
400
450
200
150
100
50
250
0
0
3409A G13
125
PULSE-SKIPPING
BURST
100
75
50
25
–25
Switch Leakage
vs Temperature VIN = 5.5V
Switch Leakage vs Input Voltage
TEMPERATURE (°C)
–50
4000
5000
6000
25
75
3409A G14
3000
2000
–25
0
50
100
125
1000
0
MAIN SWITCH
SYNCHRONOUS SWITCH
INPUT VOLTAGE (V)
0
25
30
35
6
3409A G15
20
15
0
2
4
10
5
45
40
MAIN SWITCH
SYNCHRONOUS
SWITCH


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