SC172EVB View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC172EVB

2A EcoSpeed™ Synchronous Step-Down Regulator with Optional Ultrasonic Power Save

Semtech Corporation 

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SC172

Typical Characteristics

OCP Valley Threshold vs Ambient Temperature

3.5

3.2

VDD=5V

2.9

2.6

2.3

VDD=3V

2.0

-40 -20 0 20 40 60 80 100 120

Temperature (Degree C)

IVIN Input Current In Shutdown vs Temperature

1.6

1.4

1.2

VIN=5V

Blue: VLX=VIN

1.0

Black: VLX=GND

0.8

0.6

0.4

0.2

0.0

-40 -15 10 35 60 85 110 135

Temperature (°C)

IBST Leakage Current vs Temperature

-0.0100

-0.0120

-0.0140

VIN=5V

VBST=VIN

-0.0160

-0.0180

-0.0200

-40 -15 10 35 60 85 110 135

Temperature (°C)

© 2010 Semtech Corporation

Start up waveform ( VIN=5V, VOUT=1.2V, IOUT=2A,

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

Load Transient Test (VIN=5V, VOUT=1.2V, IOUT= 0A to 2A,

Forced Continuous Conduction Mode, LOUT=1.3µH,

COUT=2x22µF, Channel 1: 50mV/Div, Channel

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

Load Transient Test (VIN=5V, VOUT=1.2V, IOUT= 2A to 0A,

Forced Continuous Conduction Mode, LOUT=1.3µH,

COUT=2x22µF, Channel 1: 50mV/Div, Channel

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



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