SS6550COTR datasheet(6/13 Pages) SSC

Part #	SS6550COTR

Description	Low-Noise Synchronous PWM Step-Down DC/DC Converter

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Manufacturer	SSC [Silicon Standard Corp.]

Direct Link	http://www.siliconstandard.com

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SS6550

n TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Fig. 13

Supply Current vs. Supply Voltage

Supply Voltage (V)

2.5

3.0

3.5

4.0

4.5

5.0

5.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

SYNC/PWM=IN

VOUT=1.8V

VOUT=3.3V

VOUT=2.5V

Fig. 14

No Load Current vs. Supply Voltage

Supply Voltage (V)

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

20.0

22.5

25.0

27.5

30.0

32.5

35.0

37.5

40.0

VOUT=1.8V

SYNC/PWM=GND

R1=560K R2=400K

Fig. 15

Operation Frequency vs. Tuning Resistor

Tuning Resistor (

Ω)

1000

500

600

700

800

900

1000

0

Fig. 16

Start-up from Shutdown, RLOAD=3

Ω

Fig. 17

Load Transient Response

VOUT=1.8V;

ILOAD=50mA to 500mA;

SYNC/MODE=IN

VOUT=1.8V;

ILOAD=50mA

to

500mA;

SYNC/MODE=GND

Fig. 18

Load Transient Response

Rev.2.01 6/06/2003

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SS6550COTR Datasheet(PDF) 6 Page - Silicon Standard Corp.

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