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| LTC3409A_15 Datasheet, PDF (5/16 Pages) Linear Technology – 600mA Low VIN Buck Regulator in 3mm 3mm DFN | |||
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LTC3409A
TYPICAL PERFORMANCE CHARACTERISTICS
(TA = 25°C, from Typical Application on the front page except for the resistive divider resistor values)
Output Voltage
vs Load Current VIN = 1.6V
1.210
RDS(ON) vs Input Voltage
0.45
RDS(ON) vs Temperature
0.55
1.205
1.200
1.195
1.190
1.185
1.100
1
1.2VOUT, BURST
1.2VOUT, PULSE-SKIPPING
10
100
LOAD CURRENT (mA)
1000
3409A G09
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
1.5
MAIN
SWITCH
SYNCHRONOUS
SWITCH
2.5
3.5
4.5
INPUT VOLTAGE (V)
5.5
3409A G10
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
â50 â25
1.6VIN
4.2VIN
2.7VIN
1.6VIN
2.7VIN
4.2VIN
MAIN SWITCH
SYNCHRONOUS SWITCH
0 25 50 75
TEMPERATURE (°C)
100 125
3409A G11
Dynamic Input Current
vs Input Voltage
3500
3000
2500
90
VOUT = 1.5V
IOUT = 0
80
BURST
VFB = 1V
70
60
2000
50
1500
1000
500
0
1.5
40
VOUT = 1.5V
IOUT = 0
30
20
PULSE-SKIPPING
10
VFB = 1V
0
2.5
3.5
4.5
5.5
INPUT VOLTAGE (V)
3409A G12
Dynamic Supply Current
vs Temperature, VIN = 3.6V,
VOUT = 1.5V, No Load
500
450
400
PULSE-SKIPPING
350
300
250
200
150
100
BURST
50
0
â50 â25
0 25 50 75
TEMPERATURE (°C)
100 125
3409A G13
Switch Leakage
vs Temperature VIN = 5.5V
6000
5000
4000
3000
2000
1000
MAIN SWITCH
SYNCHRONOUS SWITCH
0
â50 â25
0 25 50 75
TEMPERATURE (°C)
100 125
3409A G14
Switch Leakage vs Input Voltage
45
40
35
30
25
MAIN SWITCH
20
15
10
SYNCHRONOUS
5
SWITCH
0
0
2
4
6
INPUT VOLTAGE (V)
3409A G15
3409af
5
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