LP3971 datasheet(34/57 Pages) TI1

No. de pieza	LP3971

Descripción Electrónicos	Power Management Unit for Advanced Application Processors

PDF	57 Pages

Scroll/Zoom	100%

Fabricante Electrónico	TI1 [Texas Instruments]

Página de inicio	http://www.ti.com

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34 / 57 page

LP3971

SNVS432U – JANUARY 2006 – REVISED OCTOBER 2008

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Bit

Access

Name

Description

SHBU

Shut down Back up battery to prevent battery drain during shipping

0 = Back up Battery Enabled

1 = Back up Battery Disabled

BK_SLOMOD

Buck Spread Spectrum Modulation Buck 1–3

0 = 10 kHz triangular wave spread spectrum modulation

1 = 2 kHz triangular wave spread spectrum modulation

BK_SSEN

Spread spectrum function Buck 1–3

0 = SS Output Disabled

1 = SS Output Enabled

LDO2–LDO1 VOLTAGE CONTROL REGISTER (L21VCR) 8H'39

Bit

Designation

LDO 2 Output Voltage (L20V)**

LDO 1 Output Voltage (L1OV)**

Reset Value

1**

0**

1**

0**

LDO2–LDO1 VOLTAGE CONTROL REGISTER (L21VCR) 8H'39 DEFINITIONS

Bit

Access

Name

Description

7:4

R/W

L2OV

Data Code

Output Voltage

4h'0

1.8

4h'1

1.9

4h'2

2.0

4h'3

2.1

4h'4

2.2

4h'5

2.3

4h'6

2.4

4h'7

2.5

4h'8

2.6

4h'9

2.7

4h'A

2.8

4h'B

2.9

4h'C

3.0

4h'D

3.1

4h'E

3.2

4h'F

3.3

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