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 >  Integrated Circuits > Lithium-ion battery monitoring LSI > Analog front end type


Lithium-ion battery monitoring LSI

Analog front end type

Stand-alone type

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  • Overview
  • Evaluation kits
  • Document
  • FAQ
 

Analog front end type

  White
paper

General
descrip-
tion

Supply
voltage

Cell
voltage
measure-
ment
error

(Typ.)

FET
drive
circuit

Current
consum-
ption in
normal
mode

(Typ.)

Current
consum-
ption
in power
down mode

(Typ.)

OV / UV
detection

Charge,
dis/
charge
OC
detection

SC
dete-
ction

Setting
thres-
hold

Opera-
ting
temper-
ature
(°C)  

PKG

OV : Overvoltage
UV : Undervoltage
OC : Overcurrent
SC : Short current

 

Overview

The analog front end type of battery monitoring LSI

The analog front end type battery monitoring LSI measures voltage, current and temperature with high accuracy. And it protects the battery pack with controlled by an external microcontroller.

It measures voltage of each cell, charge / discharge current, temperature, and the external microcontroller detects overvoltage, undervoltage, overcurrent, high or low temperature. When the microcontroller detects abnormal state of battery pack, it controls charge / discharge MOS FET. And also, has cell balancing function.

There are some different types that have protection functions such as short-circuit detection and overvoltage detection, and it protects the battery pack quickly without controlled by a microcontroller. The analog front end type provides advanced protection and management functions of battery packs.

Features

Features1
Maximum operating voltage 80V
large noise margin,maximum operating voltage 80V

LAPIS Semiconductor's original high voltage process realized maximum operating voltage of 80V.

Features2
The lowest current consumption in the industry.
Contributiing to energy saving of system

The current consumption in power-down mode is 0.1µA (typ.) which is the lowest in the industry, and battery pack long-term storage is possible.

Features3
Multistage connection supports multi-cell high voltage systems
ML5239 construct a multi-cell high voltage system like a large-scale energy storage system.

ML5239 supports multistage connection. It is possible to construct a multi-cell high voltage Lithium-Ion battery systems, like a large-scale energy storage system.

Features4
Highly accurate voltage detection

The cell voltage measurement accuracy is the industry's best ±10 mV (ML5239). Since each cell voltage of the battery pack can be measured with high accuracy, the battery capacity can be used to the full.

The cell voltage measurement accuracy of ML 5236 and ML 5238 are ±15mV and ±20mV respectively.

Features5
Supports cell ballancing function
Supports to cell balance that improves Lithium-ion battery usage efficiency

The ML5204, ML5236, and ML5238 have built-in cell balance switches, the ML5239 has external cell balance switch driving pins.

It can execute the cell balancing operation by setting register from an external microcontroller. And the cell balancing operation improves the efficiency of battery cells.

Features6
The industry's first, high-side NMOS-FET driver built-in

In the ML5236, because NMOS-FETs can be placed on the high-side of the battery pack, battery pack system design is very simple.

Features7
Provide an evaluation board
provide an evaluation board

Evaluation boards and sample software of each LSI are available.

By connecting an assembled battery pack to the evaluation board, battery pack system is evaluated easily.

 

Applications

Analog front end type

The analog front end type of battery monitoring LSI protects battery pack in various application field

The analog front end type battery monitoring LSI protects battery packs in various application fields, and supports the safety of Li-ion batteries with various functions.

 

Evaluation kits

  Evaluation board
outline
Evaluation kit
Contents
Notes Sample
and Buy
 

Evaluation kit provided

Evaluation boards for battery monitoring LSI are available.
  • Evaluation kit provided
    • Evaluation kits for battery monitoring LSI are available.
      Connecting cables and software tools are included.(included parts are different between each LSI.)


 

LSI Documents Download

 

Data
sheets

rev.

Users
Manual

rev.

White
paper

rev.

Errata

rev.

Other

rev.

Package
Code

Dimensions,
Implementation
specifications

Environ-
mental
data

MSL



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