SP6120 datasheet(7/22 Pages) EXAR

Part #	SP6120

Description	Low Voltage, AnyFETTM, Synchronous,Buck Controller

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Manufacturer	EXAR [Exar Corporation]

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7

Date: 1/21/05

SP6120 Low Voltage, AnyFETTM, Synchronous, Buck Controller

TYPICAL PERFORMANCE CHARACTERISTICS: Continued

Unless otherwise specified: VCC = BST = ENABLE = 3.3V, ROSC = 18.7kΩ, CCOMP = 0.1µF, CSS = 0.1µF, CGH = CGL = 3.3nF, VFB = 1.25V,

ISP = ISN = 1.25V, SWN = GND = PGND = 0V, TAMB = 25°C.

Figure 8. Error Amplifier Reference vs. Temperature

Figure 9. Overcurrent Comparator Threshold Voltage

vs. Temperature

Figure 10. SS Charge Current vs. Temperature with

V

SS = 1.5V

Figure 11. SS Discharge Current vs. Temperature with

V

SS = 1.5V

Figure 12. V

FB 3% High Comparator vs. Temperature

Figure 13. V

FB 3% Low Comparator vs. Temperature

-0.20

-0.10

0.00

0.10

0.20

0.30

-40

-15

10

35

60

85

Temperature (

°C)

-47

-40

-15

10

35

60

85

-46

-45

-44

Temperature (

°C)

5.00

5.05

5.10

5.15

5.20

5.25

-40

-15

10

35

60

85

Temperature (

°C)

2.6

2.8

3.0

3.2

3.4

3.6

-40

-15

10

35

60

85

Temperature (

°C)

-3.2

-3.0

-2.8

-2.6

-2.4

-2.2

-40

-15

10

35

60

85

Temperature (

°C)

-40

-15

10

35

60

85

40

42

44

Temperature (

°C)

46

48

38

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