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LTC3370 Datasheet(PDF) 8 Page - Analog Devices

Part # LTC3370
Description  5V, 3A Synchronous Step-Down Silent Switcher in 2mm x 2mm LQFN
PDF  26 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC3370 Datasheet(HTML) 8 Page - Analog Devices

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LTC3307A
8
Rev. A
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS V
IN = 3.3V, TA = 25°C, unless otherwise noted.
Switching Waveforms,
Forced Continuous Mode
Switching Waveforms,
Pulse Skip Mode
Switching Waveforms,
Burst Mode Operation
Start-Up Waveforms
Burst Mode
Start-Up Waveforms
Pulse Skip Mode
Start-Up Waveforms
Forced Continuous Mode
Load Transient Response,
Forced Continuous Mode
Load Transient Response,
Pulse Skip Mode
Load Transient Response,
Burst Mode Operation
Forced Continuous Mode
Start–Up Waveforms
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
RLOAD = 120Ω
200µs/DIV
EN
2V/DIV
VOUT
500mV/DIV
PGOOD
2V/DIV
IL
500mA/DIV
3307A G28
Pulse Skip Mode
Start–Up Waveforms
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
RLOAD = 120Ω
200µs/DIV
EN
2V/DIV
VOUT
500mV/DIV
PGOOD
2V/DIV
IL
250mA/DIV
3307A G29
Burst Mode Operation
Start–Up Waveforms
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
RLOAD = 120Ω
200µs/DIV
EN
2V/DIV
VOUT
500mV/DIV
PGOOD
2V/DIV
IL
250mA/DIV
3307A G30
Forced Continuous Mode
Switching Waveforms,
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
ILOAD = 500mA
200ns/DIV
SW
2V/DIV
VOUT
5mV/DIV
IL
500mA/DIV
3307A G31
Pulse Skip Mode
Switching Waveforms,
5.0VIN to 1.2VOUT, 2MHz APPLICATION
ILOAD = 2mA
4µs/DIV
SW
5V/DIV
VOUT
10mV/DIV
IL
200mA/DIV
3307A G32
Burst Mode Operation
Switching Waveforms,
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
ILOAD = 50mA
800ns/DIV
SW
2V/DIV
VOUT
10mV/DIV
IL
500mA/DIV
3307A G33
Burst Mode Operation
Load Transient Response,
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
COUT = 30µF, L = 470nH
LOAD STEP: 50mA TO 2.25A (10A/uS)
10µs/DIV
ILOAD
2A/DIV
VOUT
50mV/DIV
IL
2A/DIV
3307A G36
Pulse Skip Mode
Load Transient Response,
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
COUT = 30µF, L = 470nH
LOAD STEP: 50mA TO 2.25A (10A/uS)
10µs/DIV
ILOAD
2A/DIV
VOUT
50mV/DIV
IL
2A/DIV
3307A G35
Forced Continuous Mode
Load Transient Response,
3.3VIN to 1.2VOUT, 2MHz TYPICAL APPLICATION
COUT = 30µF, L = 470nH
LOAD STEP: 50mA TO 2.25A (10A/uS)
10µs/DIV
ILOAD
2A/DIV
VOUT
50mV/DIV
IL
2A/DIV
3307A G34



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