Datasheet > MAX1879

MAX1879

更新时间： 2023-12-20 18:46:08

品牌	Logo	应用领域
亚德诺 - ADI		电池脉冲
页数	文件大小	规格书
11页	198K
描述
简单、高效率、1节Li+电池脉冲充电器

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中文翻译

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数据手册

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MAX1879 数据手册

19-2061; Rev 0; 5/01

Simple, Efficient, 1-Cell Li+ Pulse Charger

General Description

Features

The MAX1879 single-cell lithium-ion (Li+) battery charger

utilizes an efficient pulse-charging architecture to minimize

power dissipation in portable devices. This architecture

combines the efficiency of switch-mode chargers with the

simplicity and low cost of linear chargers. This simple

device, in conjunction with a current-limited wall cube and

a PMOS transistor, allows safe and fast charging of a sin-

gle Li+ cell.

ꢀ Simple Design Minimizes Heat

ꢀ Low Component Count, No Inductor

ꢀ Battery-Full Indicator

ꢀ 0.75% Accurate Battery Regulation

ꢀ 1.5µA (max) Battery Current Drain with Wall Cube

Removed

The MAX1879 initiates charging in one of three ways: bat-

tery insertion, charger power-up, or toggling the THERM

pin. Key safety features include continuous voltage and

temperature monitoring, a preset charger time-out, and an

8mA precharge current mode to charge near-dead cells.

Automatic detection of input power removal shuts down

the device, minimizing current drain from the battery. An

overall system accuracy of 0.75% ensures that the cell

capacity is fully utilized without cycle life degradation.

ꢀ Restart Charging at 4.0V

ꢀ Continuous Overvoltage and Overtemperature

Protection

ꢀ Safely Precharges Near-Dead Cells

ꢀ Automatic Power-Down when Power Source is

Removed

ꢀ Charges 1 Cell from as Low as 4.5V

ꢀ Pin-Compatible Upgrade to MAX1679

The MAX1879 is offered in a space-saving 8-pin µMAX

package. An evaluation kit (MAX1879EVKIT) is available

to help reduce design time.

Applications

Ordering Information

Single-Cell Li+ Powered Portables

Self-Charging Battery Packs

PDAs

PART

TEMP. RANGE

PIN-PACKAGE

MAX1879EUA

-40°C to +85°C

8-µMAX

Cell Phones

Cradle Chargers

Typical Operating Circuit

Pin Configuration

TOP VIEW

CURRENT-

LIMITED

AC WALL

ADAPTER

LED

GATE

CHG

BATT

THERM

GND

GATE

BATT

MAX1879

CHG

1-CELL

Li+

TSEL

ADJ

BATTERY

MAX1879

PULSE WIDTH

SELECT INPUT

TSEL

GND

µMAX

THERM

ADJ

THERMISTOR

________________________________________________________________ Maxim Integrated Products

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.

12 3 4 5 6 7...11

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与MAX1879相关器件

型号	品牌	获取价格	描述	数据表
MAX1879EUA	MAXIM	获取价格	Simple, Efficient, 1-Cell Li+ Pulse Charger
MAX1879EUA+T	MAXIM	获取价格	Battery Charge Controller, PDSO8, MICRO MAX PACKAGE-8
MAX1879EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1879
MAX187ACPA	MAXIM	获取价格	+5V, Low-Power, 12-Bit Serial ADCs
MAX187ACPA+	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, CMOS, PDIP8, 0.30
MAX187ACWE	MAXIM	获取价格	+5V, Low-Power, 12-Bit Serial ADCs
MAX187AEPA	MAXIM	获取价格	+5V, Low-Power, 12-Bit Serial ADCs
MAX187AEPA+	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, CMOS, PDIP8, 0.30
MAX187AEWE	MAXIM	获取价格	+5V, Low-Power, 12-Bit Serial ADCs
MAX187AEWE+T	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, CMOS, PDSO16, 0.3

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