CS5231-3 datasheet(5/14 Pages) ONSEMI

Part #	CS5231-3

Description	500 mA, 3.3 V Linear Regulator with Auxiliary Control

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Manufacturer	ONSEMI [ON Semiconductor]

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CS5231−3

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5

Figure 8. Ground Current vs. Load Current

Capacitance ESR (

W)

1000

6.0

0

10

5.0

4.0

3.0

2.0

1.0

100

Figure 9. Region of Stable Operation

Temperature (

°C)

4.4

0

4.0

40

20

4.2

60

Figure 10. AuxDrv Current Limit vs. Junction

Temperature

Load Current (A)

0.0

0.2

2.2

2.0

1.8

1.6

0.4

TJ = 0°C

IGND @ 0°C

2.4

2.6

4.6

4.8

5.0

80

100

120

140

Time, 5.0

ms per division

3.2

10

500

Figure 11. Transient Response

3.3

3.4

TJ = 27°C

IGND @ 27°C

TJ = 125°C

IGND @ 125°C

CIN = 33 mF

COUT = 33 mF

VIN = 5.00 V

Stable Region

TJ = 25°C

7.0

Figure 12. Application Circuit

5.0 V PCI

C1

33

mF

VIN

GND

AuxDrv

VOUT

3.3 V VAUX

C1

33

mF

C3

33

mF

M1

ASIC

VDD

* indicates PFET body diode

CS5231−3

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