LTC3612_15 Datasheet, PDF (9/30 Pages) Linear Technology – 3A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

LTC3612
Typical Performance Characteristics V_IN = 3.3V, RT/SYNC = SV_IN, unless otherwise noted.
Dynamic Supply Current vs
Temperature without AVP Mode
100
10
FORCED CONTINUOUS MODE
PULSE-SKIPPING MODE
1
V_OUT Short to GND,
Forced Continuous Mode
V_OUT
1V/DIV
I_L
2A/DIV
Start-Up from Shutdown with
Prebiased Output
(Forced Continuous Mode)
PGOOD
5V/DIV
V_OUT
500mV/DIV
I_L
2A/DIV
Burst Mode OPERATION
0.1
0.01
–60 –50 –30 –10 10 30 50 70 90 110 130 150
TEMPERATURE (°C)
3612 G29
V_OUT = 2.5V
I_OUT = 0A
V_MODE = 1.5V
50µs/DIV
3612 G30
20µs/DIV
PREBIASED V_OUT = 2.2V
V_OUT = 1.2V
I_OUT = 0A
V_MODE = 1.5V
3612 G31
Output Voltage During Sinking
vs Input Voltage
1.90 _{VOUT = 1.8V}
1µH INDUCTOR
1.88
1.86
1.84
–1.5A, 2MHz, 120°C
1.82
–1.5A, 2MHz, 25°C
1.80
1.78
1.76
2.25 2.75 3.25 3.75 4.25 4.75 5.25
INPUT VOLTAGE (V)
3612 G32
Output Voltage During Sinking
vs Input Voltage
0.95 _{VOUT = 0.9V}
1µH INDUCTOR
0.94
0.93
0.92
0.91
–1.5A, 1MHz, 120°C
0.90
–1.5A, 1MHz, 25°C
0.89
0.88
2.25 2.75 3.25 3.75 4.25 4.75 5.25
INPUT VOLTAGE (V)
3612 G33
For more information www.linear.com/LTC3612
3612fc
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