MAX1894XEEE Maxim Integrated, MAX1894XEEE Datasheet

MAX1894XEEE

Manufacturer Part Number

MAX1894XEEE

Description

Battery Management

Manufacturer

Maxim Integrated

Series

MAX1894, MAX1924r

Datasheet

1.MAX1894XEEE.pdf (16 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MAX1894XEEE

Manufacturer:

MAXIM

Quantity:

Current page: 1 of 16
Download datasheet (305Kb)

The MAX1894/MAX1924 are lithium-ion/lithium-polymer

(Li+) battery-pack protector ICs for 3- or 4-series Li+ bat-

tery packs. The MAX1894/MAX1924 enhance the useful

operating life of Li+ batteries by monitoring individual cell

voltages and preventing over/undervoltage conditions.

The MAX1894/MAX1924 also protect the battery pack

against charge current, discharge current, and pack-

short fault conditions.

In case of a fault condition, on-board drivers control

external P-channel MOSFETs, which disconnect the cells

from the pack external terminals. The external protection

MOSFETs are connected in a common-source configura-

tion that does not require external pullup resistors. The

MAX1894/MAX1924 use only one current-sense resistor

to achieve the protection features. All protection thresh-

olds and delays do not require any external components

and are trimmed at the factory.

If any cell voltage drops below the undervoltage thresh-

old, the MAX1894/MAX1924 disconnect the pack from

the load and power down to prevent deep discharge of

the pack. The MAX1894/MAX1924 offer a trickle-charge

feature, which provides a low-current path to safely

charge a deeply discharged pack. The MAX1894/

MAX1924 also have two logic-level inputs, which can be

used by a microcontroller to disable the protection

MOSFETs and to put the device in shutdown. The

MAX1894/MAX1924 have low quiescent current (30µA

typ) and ultra-low shutdown current (0.8µA typ) to pre-

vent deep-cell discharge.

The MAX1894X is designed for 4-series battery packs,

without hysteresis on the protection thresholds. The

MAX1924V and MAX1924X include hysteresis for the 3-

and 4-series packs, respectively.

19-2278; Rev 0; 4/02

*Contact factory for alternative threshold voltages.

Typical Applications Circuits appear at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX1894XEEE

MAX1924VEEE

MAX1924XEEE

3- or 4-Series Li+ Battery Packs

PART

________________________________________________________________ Maxim Integrated Products

Advanced Li+ Battery-Pack Protectors

-40°C to +85°C

TEMP RANGE

General Description

Applications

PIN-PACKAGE

16 QSOP

CELLS

o Protect Against Cell Overvoltage

o Protect Against Cell Undervoltage

o Protect Against Charge, Discharge, and Pack-

o Automatically Trickle Charges Deeply Discharged

o Fully Integrated MOSFET Drivers Do Not Require

o 0.8µA (typ) Shutdown Supply Current Prevents

o 30µA (typ) Operating Supply Current

o 28V (max) Input Voltage

o Available in Small 16-Pin QSOP Package

Short Current Faults

Cells

Pullup Resistors

Deep Discharge of Cells

Factory Programmable Limits from 4V to 4.4V

Accurate to ±0.5%

Factory Programmable Limits from 2V to 3.2V

Accurate to ±2.0%

TOP VIEW

OVERVOLTAGE

4.25V*

4.35V*

B4P

B3P

B2P

B1P

IC3

IC2

IC1

Ordering Information

MAX1894

MAX1924

QSOP

Pin Configuration

THRESHOLD HYSTERESIS

OVERVOLTAGE

SRC

SHDN

CTL

PKN

DSO

CGO

TKO

Yes

Features

Related parts for MAX1894XEEE

Related keywords

MAX1894XEEE datasheet
MAX1894XEEE data sheet
MAX1894XEEE pdf datasheet
MAX1894XEEE component
MAX1894XEEE part
MAX1894XEEE distributor
MAX1894XEEE RoHS
MAX1894XEEE datasheet download