SC174MLTRT datasheet(9/27 Pages) SEMTECH

Numer części	SC174MLTRT

Szczegółowy opis	4A EcoSpeedTM Synchronous Step-Down Regulator with Optional Ultrasonic Power Save

PDF	27 Pages

Scroll/Zoom	100%

Producent	SEMTECH [Semtech Corporation]

Strona internetowa	http://www.semtech.com

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9 / 27 page

Typical Characteristics

OCP Valley Threshold vs Temperature

3.5

3.8

4.0

4.3

4.5

4.8

5.0

5.3

5.5

-50

-25

100 125

Temperature (°C)

VDD=5.0V

VDD=3.0V

IBST Leakage Current vs Temperature

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

-50

-25

100 125

Temperature (°C)

VIN=5V

VBST=VIN

Start up waveform ( VIN=5V, VOUT=1.2V, IOUT=4A,

Channel 1: 500mV/Div, Channel 4: 2A/Div, Time: 0.5ms/Div

)

Load Transient Test (VIN=5V, VOUT=1.2V, IOUT= 0A to 4A,

Forced Continuous Conduction Mode, LOUT=1.3 H,

COUT=3x22 F, Channel 1: 50mV/Div, Channel

2:5V/Div,Channel 4: 2A/Div, Time:10 s/Div)

Load Transient Test (VIN=5V, VOUT=1.2V, IOUT= 4A to 0A,

Forced Continuous Conduction Mode, LOUT=1.3 H,

COUT=3x22 F, Channel 1: 50mV/Div, Channel

2:5V/Div,Channel 4: 2A/Div, Time:10 s/Div)

IVIN Input Current In Shutdown vs Temperature

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

-50

-25

100 125

Temperature (°C)

VIN=5V

Blue: VLX=GND

Black: VLX=VIN

SC174

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