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| LTC3536_15 Datasheet, PDF (6/28 Pages) Linear Technology – 1A Low Noise, Buck-Boost DC/DC Converter | |||
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LTC3536
Typical Performance Characteristics TA = 25°C, VIN = VOUT = 3.3 V unless otherwise noted.
Output Voltage Ripple in
PWM Mode
VOUT
20mV/DIV
VIN = 2.5V
VOUT
20mV/DIV
VIN = 3.3V
VOUT
20mV/DIV
VIN = 5V
VOUT = 3.3V
ILOAD = 0.5A
2µs/DIV
Output Voltage Ripple in Burst
Mode Operation
VOUT
50mV/DIV
INDUCTOR
CURRENT
200mA/DIV
3536 G19
VOUT = 3.3V
ILOAD = 4mA
50µs/DIV
3536 G20
Burst Mode Operation to PWM
Mode Transient
VOUT
50mV/DIV
VIN = 5.5V
VOUT
50mV/DIV
VIN = 3.3V
VOUT
50mV/DIV
VIN = 1.8V
VOUT = 3.3V
ILOAD = 25mA
COUT = 22µF
L = 4.7µH
100µs/DIV
3536 G21
Soft-Start
VOUT
1V/DIV
SHDN
2V/DIV
ILOAD
500mA/DIV
VIN = 3V
VOUT = 3.3V
COUT = 22µF
200µs/DIV
Start-Up in Burst Mode Operation
with Output Precharged
Start-Up in PWM Mode Operation
with Output Precharged
VOUT
100mV/DIV
VOUT
500mV/DIV
3536 G22
SHDN
1V/DIV
VIN = 3V
VOUT = 3.3V
COUT = 22µF
ILOAD = 1mA
5ms/DIV
3536 G23
SHDN
1V/DIV
VIN = 3V
VOUT = 3.3V
COUT = 22µF
ILOAD = 20mA
500µs/DIV
3536 G24
3536fa
6
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