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| LTC3612_15 Datasheet, PDF (6/30 Pages) Linear Technology – 3A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter | |||
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LTC3612
Typical Performance Characteristics VIN = 3.3V, RT/SYNC = SVIN, unless otherwise noted.
Pulse-Skipping Mode Operation
Forced Continuous Mode Operation
Load Step Transient in
Pulse-Skipping Mode
VOUT
20mV/DIV
IL
500mA/DIV
VOUT = 1.8V
IOUT = 75mA
VMODE = 3.3V
20µs/DIV
VOUT
20mV/DIV
IL
200mA/DIV
3612 G09
VOUT = 1.8V
IOUT = 100mA
VMODE = 1.5V
1µs/DIV
VOUT
200mV/DIV
IL
1A/DIV
3612 G10
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 3.3V
COMPENSATION FIGURE 1
3612 G11
Load Step Transient in
Burst Mode Operation
VOUT
200mV/DIV
IL
1A/DIV
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 0V
COMPENSATION FIGURE 1
Load Step Transient in Forced
Continuous Mode without AVP Mode
Load Step Transient in Forced
Continuous Mode with AVP Mode
VOUT
200mV/DIV
IL
1A/DIV
VOUT
100mV/DIV
IL
1A/DIV
3612 G12
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 1.5V
COMPENSATION FIGURE 1
3612 G13
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 1.5V
VITH = VIN
OUTPUT CAPACITOR VALUE FIGURE 1
3612 G14
Load Step Transient in Forced
Continuous Mode Sourcing and
Sinking Current
VOUT
200mV/DIV
IL
2A/DIV 0A
VOUT = 1.8V
50µs/DIV
ILOAD = â1.5A TO 3A
VMODE = 1.5V
COMPENSATION FIGURE 1
3612 G15
Sinking Current
VOUT
20mV/DIV
SW
2V/DIV
IL
500mA/DIV
VOUT = 1.2V
IOUT = â1A
VMODE = 1.5V
1µs/DIV
3612 G16
3612fc
6
For more information www.linear.com/LTC3612
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