SC173MLTRT datasheet(9/27 Pages) SEMTECH

Part #	SC173MLTRT

Description	3A EcoSpeedTM Synchronous Step-Down Regulator with Optional Ultrasonic Power Save

PDF	27 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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9 / 27 page

Typical Characteristics

FB Voltage vs Temperature

0.745

0.748

0.750

0.753

0.755

-40 -15

110 135

Temperature (°C)

Black:VDD=5.0V

Red: 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=3A,

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

)

Load Transient Test (VIN=5V, VOUT=1.2V, IOUT= 0A to 3A,

Forced Continuous Conduction Mode, LOUT=1.3 H,

COUT=2x22 F, Channel 1: 50mV/Div, Channel

2:5V/Div,Channel 4: 1A/Div, Time:10 s/Div)

Load Transient Test (VIN=5V, VOUT=1.2V, IOUT= 3A to 0A,

Forced Continuous Conduction Mode, LOUT=1.3 H,

COUT=2x22 F, Channel 1: 100mV/Div, Channel

2:5V/Div,Channel 4: 1A/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

SC173

SC173MLTRT Datasheet(PDF) 9 Page - Semtech Corporation

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