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| LTC3626_15 Datasheet, PDF (7/28 Pages) Linear Technology – 20V, 2.5A Synchronous Monolithic Step-Down Regulator with Current and Temperature Monitoring | |||
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LTC3626
Typical Performance Characteristics
TA = 25°C, PVIN = SVIN = 12V, f = 1MHz unless otherwise noted.
Load Regulation
1.0
0.8
0.6
0.4
0.2
0
â0.2
â0.4
â0.6
â0.8
Burst Mode OPERATION
FORCED CONTINUOUS
â1.0
0
0.5
1
1.5
2
2.5
ILOAD (A)
3626 G17
Output Voltage vs Time
(Burst Mode Operation)
VSW
5V/DIV
VOUT
20mV/DIV
IL
1A/DIV
VOUT = 1.8V
4µs/DIV
ILOAD = 100mA
3626 G18
Output Tracking
Start-Up from Shutdown
(Burst Mode Operation)
Output Voltage vs Time (Forced
Continuous Mode Operation)
VSW
5V/DIV
VOUT
20mV/DIV
IL
1A/DIV
VOUT = 1.8V
2µs/DIV
ILOAD = 100mA
3626 G19
Start-Up from Shutdown (Forced
Continuous Mode Operation)
1V/DIV
VOUT
RUN
2V/DIV
RUN
2V/DIV
500mV/DIV
TRACK/SS
VFB
VOUT = 1.8V
2ms/DIV
ILOAD = 200mA
3626 G20
VOUT
1V/DIV
IL
1A/DIV
VOUT = 1.8V
ILOAD = 200mA
CSS = 2.2nF
200µs/DIV
3626 G21
VOUT
1V/DIV
IL
1A/DIV
VOUT = 1.8V
ILOAD = 200mA
CSS = 2.2nF
200µs/DIV
3626 G22
Load Step
(Burst Mode Operation)
VOUT
100mV/DIV
AC-COUPLED
ITH = INTVCC
Load Step (Forced Continuous
Mode Operation)
VOUT
100mV/DIV
AC-COUPLED
ITH = INTVCC
IL
2.5A/DIV
IL
2.5A/DIV
VOUT = 1.8V
20µs/DIV
COUT = 47µF
ILOAD = 100mA TO 2.5A
3626 G23
VOUT = 1.8V
20µs/DIV
COUT = 47µF
ILOAD = 100mA TO 2.5A
3626 G24
For more information www.linear.com/LTC3626
3626fa
7
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