LP5550 datasheet(2/28 Pages) TI1

Part #	LP5550

Description	LP5550 PowerWise??Technology Compliant Energy Management Unit

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Manufacturer	TI1 [Texas Instruments]

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LP5550SQ

VBAT1

VO1

DGND

PWROK

VBATSW

SW

SWGND VBAT2

VO3

VFB

AGND

ENABLE

VO2

RESETN

SPWI

SCLK

VBATT

1 PF

10 PH

10 PF

2.2 PF

4.7 PF

VBATT

+

-

VBATT

3.0V - 5.5V

0.1 PF

10 PF

1

16

VBAT1

VO1

DGND

PWROK

ENABLE

AGND

VFB

VO3

VBAT1

VO1

DGND

PWROK

ENABLE

AGND

VFB

VO3

ABC

Bottom View

Top View

ABC

LP5550

SNVS378G – OCTOBER 2005 – REVISED APRIL 2013

www.ti.com

Connection Diagrams

Figure 2. 16-Pin WQFN Package

See Package Number RGH0016A

Typical Application

Figure 3. Typical Application Circuit

Pin Descriptions

Pin No.

Name

I/O

Type

Description

1

SCLK

I

D

PowerWise Interface (PWI) clock input

2

SPWI

I/O

D

PowerWise Interface (PWI) bi-directional data

3

RESETN

I

D

Reset, active low

4

VO2

O

A

LDO2 output, for supplying the I/O voltage on the SoC

5

VBAT1

P

Battery supply voltage

6

VO1

O

A

LDO1 output, for supplying a fixed voltage to a PLL etc. on the SoC

7

DGND

G

Digital ground

8

PWROK

O

D

Power OK, active high output signal

2

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