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LTC3620 Datasheet, PDF (5/16 Pages) Linear Technology – Ultralow Power 15mA Synchronous Step-Down Switching Regulator
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC3620
Switching Waveforms at 1mA
Load, FMIN/MODE = 0V
Switching Waveforms at 12mA
Load, FMIN/MODE = 0V
Switching Waveforms at 250μA
Load, FMIN/MODE = 200kHz Clock
VOUT (AC)
20mV/DIV
VSW
2mV/DIV
IL
25mA/DIV
VOUT = 1.1V
VIN = 3.6V
TA = 25°C
4μs/DIV
VOUT (AC)
20mV/DIV
VSW
2V/DIV
IL
25mA/DIV
3620 G10
VOUT = 1.1V
VIN = 3.6V
TA = 25°C
400ns/DIV
VFMIN/MODE
1V/DIV
VOUT (AC)
20mV/DIV
VSW
2V/DIV
3620 G11
IL
25mA/DIV
VOUT = 1.1V
VIN = 3.6V
TA = 25°C
2μs/DIV
3620 G12
Switching Waveforms at 1mA
Load, FMIN/MODE = 200kHz Clock
Switching Waveforms at 12mA
Load, FMIN/MODE = 200kHz
Start-Up Waveforms
VFMIN/MODE
1V/DIV
VOUT (AC)
20mV/DIV
VSW
2V/DIV
VFMIN/MODE
1V/DIV
VOUT (AC)
20mV/DIV
VSW
2V/DIV
VOUT
200mV/DIV
IL
25mA/DIV
VOUT = 1.1V
VIN = 3.6V
TA = 25°C
2μs/DIV
IL
25mA/DIV
3620 G13
VOUT = 1.1V
VIN = 3.6V
TA = 25°C
400ns/DIV
IL
25mA/DIV
3620 G14
VOUT = 1.1V
200μs/DIV
VIN = 3.6V
IOUT = 0mA
FMIN/MODE = 0V
TA = 25°C
3620 G15
Transient Response, 250μA to 3mA
Step, FMIN/MODE = 0V
Transient Response, 1mA to 10mA
Step, FMIN/MODE = 0V
VOUT (AC)
10mV/DIV
ILOAD
5mA/DIV
VIN = 3.6V
VOUT = 1.1V
TA = 25°C
4ms/DIV
VOUT (AC)
20mV/DIV
ILOAD
5mA/DIV
3620 G16
VIN = 3.6V
VOUT = 1.1V
TA = 25°C
4ms/DIV
3620 G17
PFET RDS(ON) vs Temperature
2.3
ISW = 35mA
2.1
1.9
VIN = 3.6V
1.7
1.5
VIN = 5V
1.3
1.1
0.9
0.7
0.5
–50
0
50
TEMPERATURE (°C)
100 130
3620 G18
3620f
5
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