SP6652LEDEB datasheet(11/16 Pages) EXAR

Part #	SP6652LEDEB

Description	1A, High Efficiency, Fixed 1.4 MHz

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Manufacturer	EXAR [Exar Corporation]

Direct Link	http://www.exar.com

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11 / 16 page

Oct10-07 RevJ

SP6652 1A, High Efficiency, Current Mode PWM Buck Regulator

TYPICAL PERFORMANCE CHARACTERISTICS

SP6652 Line/Load Rejection Vout = 3.3V

3.20

3.25

3.30

3.35

3.40

0

200

400

600

800

1000

ILoad (mA)

Vi=3.6V

Vi=3.9V

Vi=4.2V

Vi=5.0V

SP6652 Line/Load Rejection VOUT = 1.5V

1.480

1.490

1.500

1.510

1.520

1

10

100

1000

ILoad (mA)

Vi=4.2V

Vi=3.9V

Vi=3.6V

Vi=3.0V

Figure 5. Efficiency vs. Load, Vout= 3.3V

Figure 6. Efficiency vs. Load, Vout= 1.5V

Figure 7: Line/Load Rejection , Vout = 3.3V

Figure 8: Line/Load Rejection , Vout = 1.5V

SP6652 Efficiency vs Load Vout = 3.3V

0

10

20

30

40

50

60

70

80

90

100

1

10

100

1000

ILoad (mA)

Vi=3.6V

Vi=3.9V

Vi=4.2V

Vi=5.0V

SP6652 Efficiency vs Load (Vout = 1.5V)

0

10

20

30

40

50

60

70

80

90

100

1

10

100

1000

ILoad (mA)

Vi=3.0V

Vi=3.6V

Vi=3.9V

Vi=4.2V

SP6652 Line/Load Regulation, Vout = 3.3V

3.280

3.290

3.300

3.310

3.320

3.330

3.340

1

10

100

1000

ILoad (mA)

Vi=3.6V

Vi=3.9V

Vi=4.2V

Vi=5.0V

Figure 10: Line/Load Regulation , Log Scale,

Vout = 1.5V

Figure 9: Line/Load Regulation , Log Scale,

Vout = 3.3V

SP6652 Line/Load Rejection VOUT = 1.5V

1.480

1.490

1.500

1.510

1.520

0

200

400

600

800

1000

ILoad (mA)

Vi=4.2V

Vi=3.9V

Vi=3.6V

Vi=3.0V

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