AS3722 datasheet(26/199 Pages) AMSOSRAM

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ams Datasheet

Page 25

[v1-01] 2015-Sep-07

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AS3722 − Detailed Descriptions- Power Management Functions

Figure 15:

DC/DC Buck Converter Normal Operation

Figure 16:

DC/DC Buck Converter SD4+SD5 (2-3A) Mode

DC/DC Buck Normal Operation: Shows

the internal DC/DC buck converters in

normal operation independent from

each other; no slave mode set

DC/DC Buck Slave Operation: Shows

the internal DC/DC buck converters with

SD5 operating as slave of SD4 to

increase the output current.

(sd5_slave = 1)

VSUP_SD2

LX_SD2

FB_SD2

VSS_SD2

1uH

2.2uF

33uF

VSD2

12.5mV steps

VSUP_SD3

LX_SD3

FB_SD3

PVSS_SD3

1uH

22uF

VSD3

12.5mV steps

VSUP_SD4

LX_SD4

FB_SD4

VSS_SD4

1uH

10uF

VSD4

12.5mV steps

2.2uF

VSUP_SD5

LX_SD5

FB_SD5

VSS_SD5

1uH

10uF

VSD5

12.5mV steps

2.2uF

DCDC2

0.6V-3.3V

3-4A

DCDC3

0.6V-3.3V

1.5-2A

DCDC4

0.6V-3.3V

1-1.5A

DCDC5

0.6V-3.3V

1-1.5A

VSUP_SD4

LX_SD4

FB_SD4

VSS_SD4

1uH

22uF

VSD4 (2-3A)

12.5mV steps

4.7uF

VSUP_SD5

LX_SD5

FB_SD5

VSS_SD5

VSUP_SD2

LX_SD2

FB_SD2

VSS_SD2

1uH

2.2uF

33uF

VSD2

12.5mV steps

VSUP_SD3

LX_SD3

FB_SD3

PVSS_SD3

1uH

22uF

VSD3

12.5mV steps

2.2uF

DCDC2

0.6V-3.3V

3-4A

DCDC3

0.6V-3.3V

1.5-2A

DCDC4

0.6V-3.3V

1-1.5A

DCDC5

0.6V-3.3V

1-1.5A

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