PS501 datasheet(1/42 Pages) MICROCHIP

No. de pieza	PS501

Descripción Electrónicos	Single Chip Field Reprogrammable Battery Manager

PDF	42 Pages

Scroll/Zoom	100%

Fabricante Electrónico	MICROCHIP [Microchip Technology]

Página de inicio	http://www.microchip.com

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 2004 Microchip Technology Inc.

DS21818C-page 1

PS501

Features

• Single chip solution for rechargeable battery

management

• Footprint compatible with PS401

• SMBus 1.1 and SBData 1.1 compatible

• Precise capacity reporting for Lithium Ion and

Lithium Polymer battery chemistries

• Embedded PowerSmart® patented algorithms

contained in customizable on-chip 16-Kbyte Flash

memory

• User configurable and “learned” parameters

stored in on-chip 256 x 8 EEPROM

• Algorithms and parameters fully field

reprogrammable via SMBus interface

• Integrating sigma-delta A/D converter with 9 to

16-bit programmable resolution which accurately

measures:

- Current through sense resistor

- High-voltage (18V) battery cells directly

connected to VCELL inputs

- Temperature measurement from on-chip

sensor or optional external thermistor

• Integrated precision silicon time base

• Twelve individually programmable input/output

pins that can be assigned as charge control I/O,

secondary safety function I/O, SOC LED output or

general purpose I/O

- Two of the twelve I/Os are high voltage,

capable for direct drive of Charge and Safety

FETs

• On-chip regulator generates precision digital and

analog supply voltages directly from pack voltage

• Supports direct connection to 2 to 4-cell Lithium

packs

• Flexible power operating modes:

- Run: Continuous operation

- Sample: Periodic measurements at

programmable intervals

- Sleep: Shutdown mode due to low voltage.

Power consumption less than 25

µA.

- Shelf-Sleep: Shuts off PS501 power consumption

for pack storage with automatic wake-up on pack

insertion. Power consumption is less than 1

µA.

• Integrated Reset Control

- Power-on Reset

- Watchdog Timer Reset

- Brown-out Detection Reset

Pin Description

Pin Summary

Pin Name

Type

Description

VDDD, VSSD

Supply

Digital supply voltage input,

ground

GPIO(0..9)

I/O

Programmable digital I/O

GPIOHV1,2

I/O

Open-drain programmable

digital I/O for direct drive of

FETs

MCLR

I

Master Clear. Pull-up in

normal operation

SMB-CLK,

SMB-DTA

I/O

SMBus interface

VC(1..4)

I

Cell voltage inputs

VDDA, VSSA

Supply

Voltage regulator output

(internally connected to

analog supply input),

ground

RSHP, RSHN

I

Current sense resistor input

VNTC

I

External thermistor input

VREFT

O

Thermistor reference

voltage

ROSC

I

Internal oscillator bias

resistor

VDDD

GPIO(4)

GPIO(5)

GPIO(6)

GPIO(7)

SMB-CLK

SMB-DTA

VC(4)

VC(3)

VC(2)

VC(1)

VDDA

VSSA

RSHP

VSSD

GPIO(3)

GPIO(2)

GPIO(1)

GPIO(0)

GPIOHV2

MCLR

GPIOHV1

GPIO(9)

GPIO(8)

ROSC

VREFT

VNTC

RSHN

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

28-pin SSOP Package - 209 mil

Single Chip Field Reprogrammable Battery Manager

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