Datasheet > MAX846A

MAX846A

更新时间： 2024-09-25 14:58:19

品牌	Logo	应用领域
亚德诺 - ADI		电池控制器
页数	文件大小	规格书
12页	106K
描述
低成本、多种化学类型电池充电控制器

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中文翻译

获取价格

数据手册

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MAX846A 数据手册

19-1121; Rev 0; 9/96

Co s t -S a vin g Mu lt ic h e m is t ry

Ba t t e ry-Ch a rg e r S ys t e m

MX846A

_______________Ge n e ra l De s c rip t io n

____________________________Fe a t u re s

♦ Multichemistry Charger System (Li-Ion, NiMH, NiCd)

♦ Independent Voltage and Current Loops

♦ ±0.5% Internal Reference for Li-Ion Cells

♦ Lowers Cost:

The MAX846A is a cost-saving multichemistry battery-

charger system that comes in a space-saving 16-pin

QSOP. This integrated system allows different battery

chemistries (Li-Ion, NiMH or NiCd cells) to be charged

using one circuit.

—Stands Alone or Uses Low-Cost µC

—Built-In 1% Linear Regulator Powers µC

—Linear Regulator Provides Reference to µC ADCs

—Built-In µC Reset

In its simplest application, the MAX846A is a stand-

alone, current-limited float voltage source that charges

Li-Ion cells. It can also be paired up with a low-cost

microcontroller (µC) to build a universal charger capa-

ble of charging Li-Ion, NiMH, and NiCd cells.

—Controls Low-Cost External PNP Transistor or

P-Channel MOSFET

An internal 0.5%-accurate reference allows safe charg-

ing of Li-Ion cells that require tight voltage accuracy.

The voltage- and current-regulation loops used to con-

trol a low-cost external PNP transistor (or P-channel

MOSFET) are independent of each other, allowing more

flexibility in the charging algorithms.

♦ Space-Saving 16-Pin QSOP

♦ Charging-Current-Monitor Output

♦ <1µA Battery Drain when Off

The MAX846A has a built-in 1%, 3.3V, 20mA linear regu-

lator capable of powering the µC and providing a refer-

e nc e for the µC’s a na log -to-d ig ita l c onve rte rs . An

on-board reset notifies the controller upon any unex-

pected loss of power. The µC can be inexpensive, since

its only functions are to monitor the voltage and current

and to change the charging algorithms.

______________Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

Dice*

MAX846AC/D

MAX846AEEE

-40°C to +85°C

16 QSOP

________________________Ap p lic a t io n s

*Dice are tested at T = +25°C only. Contact factory for details.

Li-Ion Battery Packs

Desktop Cradle Chargers

Li-Ion/NiMH/NiCd Multichemistry Battery

Chargers

__________Typ ic a l Op e ra t in g Circ u it

Cellular Phones

3.5V

20V

Notebook Computers

Hand-Held Instruments

__________________P in Co n fig u ra t io n

DRV

TOP VIEW

CS-

BATT

Li-ION

BATTERY

DCIN

16 DRV

PGND

CS+

DCIN

CCI

14 CS-

13 CS+

MAX846A

ISET

GND

CCV

VSET

ISET

OFFV

MAX846A

CELL2

BATT

11 ON

CCV

CCI

GND

CELL2

PGND

PWROK

QSOP

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

12 3 4 5 6 7...12

中文翻译

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与MAX846A相关器件

型号	品牌	获取价格	描述	数据表
MAX846AC/D	MAXIM	获取价格	Cost-Saving Multichemistry Battery-Charger System
MAX846AEEE	MAXIM	获取价格	Cost-Saving Multichemistry Battery-Charger System
MAX846AEEE-T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO16, 0.150 INCH, 0.025 INCH PITCH
MAX846AEVKIT	MAXIM	获取价格	Flash Programmable 12-Bit Integrated Data-Acquisition Systems[MAX7651/MAX7652/MAX7651CCB/M
MAX847	MAXIM	获取价格	1-Cell, Step-Up Two-Way Pager System IC
MAX847EEI	MAXIM	获取价格	1-Cell, Step-Up Two-Way Pager System IC
MAX847EEI+T	MAXIM	获取价格	Power Supply 28-Pin QSOP T/R
MAX847EEI-T	MAXIM	获取价格	Power Supply Management Circuit, Adjustable, 1 Channel, PDSO28, 0.150 INCH, 0.025 INCH PIT
MAX847EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX847
MAX848	MAXIM	获取价格	1-Cell to 3-Cell, High-Power, Low-Noise, Step-Up DC-DC Converters

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