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LTC3112_15 Datasheet, PDF (8/32 Pages) Linear Technology – 15V, 2.5A Synchronous Buck-Boost DC/DC Converter
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LTC3112
Typical Performance Characteristics
TA = 25°C, VIN = 5.0V, VOUT = 5.0V unless otherwise specified
12VIN to 5VOUT
Burst Mode Operation Waveforms
PWM VOUT Ripple
VOUT
100mV/DIV
INDUCTOR
CURRENT
500mA/DIV
VOUT
50mV/DIV
INDUCTOR
CURRENT
1A/DIV
7.5VIN to 5.0VOUT Soft-Start
Waveforms
VIN
2V/DIV
VOUT
2V/DIV
INDUCTOR
CURRENT
1A/DIV
100mA LOAD
COUT = 47µF
20µs/DIV
3112 G31
1µs/DIV
12.0VIN TO 5.0VOUT
1A LOAD COUT = 47µF
3112 G32
IL 1A/DIV
1500kHz SYNC Signal Capture
and Release
12VIN to 5.0VOUT SW1
and SW2 Waveforms
1ms/DIV
3112 G33
PWM/SYNC
5V/DIV
INDUCTOR
CURRENT
500mA/DIV
SW1
5V/DIV
SW2
5V/DIV
INDUCTOR
CURRENT
1A/DIV
10µs/DIV
3112 G34
ILOAD = 2A
750kHz
500ns/DIV
3112 G36
VOUT Short Circuit Response
VOUT
2V/DIV
VOUT
SHORTED
INDUCTOR
CURRENT
5A/DIV
VIN = 5V
200µs/DIV
3112 G37
VCC
5V/DIV
VCC Short Circuit Recovery
VCC
SHORTED
VOUT
2V/DIV
VOUT
SOFT-STARTS
INDUCTOR
CURRENT
1A/DIV
500µs/DIV
3112 G38
8
For more information www.linear.com/LTC3112
3112fc
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