MAX1924VEEE+ by Analog Devices

Advanced Li+ Battery-Pack Protectors


The MAX1894/MAX1924 are lithium-ion/lithium-polymer (Li+) battery-pack protector ICs for 3- or 4-series Li+ battery 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 configuration that does not require external pullup resistors. The MAX1894/MAX1924 use only one current-sense resistor to achieve the protection features. All protection thresholds and delays do not require any external components and are trimmed at the factory. If any cell voltage drops below the undervoltage threshold, 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 prevent 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.

Where to Buy

Prices starting from US$3.14

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Features

Protect Against Cell Overvoltage Factory Programmable Limits from 4V to 4.4V Accurate to ±0.5%
Protect Against Cell Undervoltage Factory Programmable Limits from 2V to 3.2V Accurate to ±2.0%
Protect Against Charge, Discharge, and Pack- Short Current Faults
Automatically Trickle Charges Deeply Discharged Cells
Fully Integrated MOSFET Drivers Do Not Require Pullup Resistors
0.8µA (typ) Shutdown Supply Current Prevents Deep Discharge of Cells
30µA (typ) Operating Supply Current
28V (max) Input Voltage
Available in Small 16-Pin QSOP Package

Specifications

Functions Protector
Battery Type 3-4 Cell Li-Ion
Parameters Measured CurrentTimeVoltage
End Equipment Pack
Battery Protection Features Over-CurrentOver/Under Voltage
VSUPPLY (V) (min) 4
VSUPPLY (V) (max) 20
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 0


MAX1924VEEE+ Semiconductors - ICs by Analog Devices

BATTERY PROTECTION LI-ION/POL QSOP-16

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Battery Type Li-Ion Li-Pol
Battery Protection Over / Under Voltage
No. of Batteries 3
Shutdown Current 0.8µA
Battery IC Case Style QSOP
No. of Pins 16Pins
Supply Voltage Min 4V
Supply Voltage Max 20V
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Advanced Li+ Battery-Pack Prot | Analog Devices
BATTERY PROTECTION, LI-ION/POL, QSOP-16 | Farnell

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX1924VEEE+ ?

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Is the MAX1924VEEE+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1924VEEE+ have stock available?

Authorised distributors including Analog Devices and Farnell have stock available or on a lead time for MAX1924VEEE+ .

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