MAX4880

更新时间： 2024-09-30 05:00:11

品牌	Logo	应用领域
美信 - MAXIM		开关控制器
页数	文件大小	规格书
10页	207K
描述
Overvoltage-Protection Controller with Internal Disconnect Switch

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MAX4880 数据手册

19-3776; Rev 0; 7/05

Overvoltage-Protection Controller with

Internal Disconnect Switch

General Description

Features

The MAX4880 is an overvoltage-protection controller

with an internal current-limited switch that can be con-

figured as a low-cost battery charger. When the input

voltage exceeds the overvoltage trip level (5.7V), or

drops below the undervoltage-lockout level (4.2V), the

MAX4880 turns off the external n-channel MOSFET and

asserts an undervoltage/overvoltage flag indicator

(FLAGV) low to notify the processor.

♦ Overvoltage Protection Up to 28V

♦ Preset 5.6V Overvoltage Trip Level

♦ Internal 525mA Current-Limited Switch

♦ ±±.2ꢀ Accurate ꢁatterꢂ ꢃisconnect ꢄ(.2Vꢅ

♦ ꢃrives Low-Cost n-Channel MOSFET

♦ Internal 50ms Startup ꢃelaꢂ

The MAX4880 internal current-limited switch limits the

charge current flowing to the battery to 525mA. The

switch opens when the battery voltage reaches its full-

charged state (4.2V), and a flag (BAT_OK) asserts to

notify the processor. The MAX4880 includes a switch-

control input (CB) to turn off the internal current-limited

switch, regardless of the battery voltage.

♦ Overvoltage/Undervoltage-Fault FLAGV Indicator

♦ ꢁatterꢂ-Voltage-Trip BAT_OK Indicator

♦ Undervoltage Lockout

♦ Thermal Shutdown Protection

♦ Tinꢂ ±0-Pin TꢃFN Package

The MAX4880 also features a built-in startup delay that

allows the adapter voltage to settle down before turning

on the MOSFET. Other features include 15kV ESD pro-

tection for the input and a shutdown function (EN) to

turn off the external n-channel MOSFET.

Ordering Information

The MAX4880 is available in a space-saving 10-pin

TDFN package and is specified for operation over the

extended -40°C to +85°C temperature range.

PIN-

PACKAGE

TOP

MARK

PART

TEMP RANGE

MAX4880ETB

-40°C to +85°C

10 TDFN-EP*

APJ

Applications

* EP = Exposed Pad

Cell Phones

Digital Still Cameras

PDAs and Palmtop Devices

MP3 Players

Typical Operating Circuit

AC-DC

ADAPTER

5.25V

Pin Configuration

GATE

BTA

TOP VIEW

DC-DC

CONVERTER

BTB

MAX4880

GND

Li+

MAX4880

BTB_SNS

FLAGV

BAT_OK

3mm x 3mm TꢃFN

________________________________________________________________ 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...10

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与MAX4880相关器件

型号	品牌	获取价格	描述	数据表
MAX4880ETB	MAXIM	获取价格	Overvoltage-Protection Controller with Internal Disconnect Switch
MAX4880ETB-T	MAXIM	获取价格	Power Supply Management Circuit, Fixed, 1 Channel, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, EXPOS
MAX4881	MAXIM	获取价格	Overvoltage Protection Controllers with Current Limit in TDFN
MAX4881ETB	MAXIM	获取价格	Overvoltage Protection Controllers with Current Limit in TDFN
MAX4881ETB-T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, PDSO10, 3 X 3 MM, 0.8 MM HEIGHT, M
MAX4882ETB	MAXIM	获取价格	Overvoltage Protection Controllers with Current Limit in TDFN
MAX4883BETB	MAXIM	获取价格	Overvoltage Protection Controllers with Current Limit in TDFN
MAX4883BETB-T	MAXIM	获取价格	暂无描述
MAX4883CETB	MAXIM	获取价格	Overvoltage Protection Controllers with Current Limit in TDFN
MAX4883CETB+T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, BICMOS, PDSO10, TDFN-10

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