A4406 datasheet(9/27 Pages) ALLEGRO

Part #	A4406

Description	The A4406 is an automotive power management IC that uses a high frequency constant on-time 5.45 V pre-regulator to supply an internal 5 V linear regulator and a 3.3 V linear DMOS driver.

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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9 / 27 page

Constant On-Time Buck Regulator

With One External and One Internal Linear Regulator

A4406

9

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

4.95

4.96

4.97

4.98

4.99

5.00

5.01

5.02

5.03

5.04

5.05

-40

-20

0

20

40

60

80

100

120

140

Temperature (°C)

3.27

3.28

3.29

3.30

3.31

3.32

3.33

-40

-20

0

20

40

60

80

100

120

140

Temperature (°C)

0

100

200

300

400

500

600

700

800

900

1,000

1,100

1,200

1,300

1,400

-40

-20

0

20

40

60

80

100

120

140

Temperature (°C)

5.40

5.41

5.42

5.43

5.44

5.45

5.46

5.47

5.48

5.49

5.50

-40

-20

0

20

40

60

80

100

120

140

Temperature (°C)

V33 Output versus Temperature

VREG Output versus Temperature

V5P Output versus Temperature

tON versus Temperature

VIN = 7.5 V

VIN = 35 V

VIN = 13.5 V

VIN = 27 V

Characteristic Performance

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