SS6550COTR datasheet(5/13 Pages) SSC

No. de pieza	SS6550COTR

Descripción Electrónicos	Low-Noise Synchronous PWM Step-Down DC/DC Converter

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Fabricante Electrónico	SSC [Silicon Standard Corp.]

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SS6550

n TYPICAL PERFORMANCE CHARACTERISTICS (continued)

Load Current (mA)

Fig. 7

Load Current vs. Efficiency

(W/ or W/O Schottky Diode)

10

100

1000

60

70

80

90

100

W/ Schottky Diode

W/O Schottky Diode

VIN=3.6V

VOUT=1.8V

Temperature (

°C)

-50

-25

0

25

50

75

100

125

0.725

0.730

0.735

0.740

0.745

0.750

0.755

0.760

0.765

VIN=3.6V

Fig. 8

Reference Voltage vs. Temperature

Fig. 9

Oscillator Frequency vs. Temperature

Temperature (

°C)

-40

-20

0

20

40

60

80

100

120

450

460

470

480

490

500

510

520

530

540

550

VIN=3.6V

Fig. 10

Frequency vs. Input Voltage

Supply Voltage (V)

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

450

460

470

480

490

500

510

520

530

540

550

Fig. 11

RDSON vs. Supply Voltage

Supply Voltage (V)

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

0.26

0.28

0.30

0.32

0.34

0.36

0.38

0.40

0.42

0.44

Main Switch

Synchronous Switch

Fig. 12

Output Voltage vs. Load Current

Load Current (mA)

1

10

100

1000

1.72

1.74

1.76

1.78

1.80

1.82

VIN=3.6V

Rev.2.01 6/06/2003

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SS6550COTR Datasheet(PDF) 5 Page - Silicon Standard Corp.

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