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| LTC3615-1_15 Datasheet, PDF (6/32 Pages) Linear Technology – Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter | |||
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LTC3615/LTC3615-1
Typical Performance Characteristics VIN = 3.3V, RT/SYNC = SVIN, unless otherwise noted.
Forced Continuous Mode
Operation (FCM)
VOUT
20mV/DIV
IL
200mA/DIV
VOUT = 1.8V
IOUT = 100mA
VMODE = 1.5V
1µs/DIV
Pulse-Skipping Mode Operation
Burst Mode Operation
VOUT
20mV/DIV
3615 G09
IL
500mA/DIV
VOUT = 1.8V
IOUT = 75mA
VMODE = 3.3V
20µs/DIV
VOUT
20mV/DIV
IL
500mA/DIV
3615 G10
VOUT = 1.8V
IOUT = 75mA
VMODE = 0V
20µs/DIV
3615 G11
Load Step Transient in
FCM External Compensation
VOUT
200mV/DIV
IL
1A/DIV
Load Step Transient
in Pulse-Skipping Mode
VOUT
200mV/DIV
IL
1A/DIV
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 1.5V
COMPENSATION FIGURE 1
3615 G12
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 3.3V
COMPENSATION FIGURE 1
Load Step Transient in
Burst Mode Operation
VOUT
200mV/DIV
IL
1A/DIV
3615 G13
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 0V
COMPENSATION FIGURE 1
3615 G14
Load Step Transient in FCM
with AVP Mode
VOUT
100mV/DIV
IL
1A/DIV
VOUT = 1.8V
50µs/DIV
ILOAD = 100mA TO 3A
VMODE = 1.5V
VITH = 3.3V
OUTPUT CAPACITOR VALUE FIGURE 1
3615 G15
Load Step Transient in Forced
Continuous Mode Sourcing and
Sinking Current
Internal Start-Up in Forced
Continuous Mode
VOUT
200mV/DIV
IL
2A/DIV 0A
VOUT = 1.8V
50µs/DIV
ILOAD = â1.5A TO 3A
VMODE = 1.5V
COMPENSATION FIGURE 1
3615 G16
RUN
1V/DIV
VOUT
500mV/DIV
IL
1A/DIV
PGOOD
2V/DIV
VOUT = 1.8V
IOUT = 3A
VMODE = 1.5V
500µs/DIV
3615 G17
3615fb
6
For more information www.linear.com/LTC3615
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