MAX1508, MAX1508Y, MAX1508Z 线性Li+电池充电器，带有集成调整FET、热调节和ACOK，3mm x 3mm TDFN封装

快速浏览

技术文档

定购信息

更多信息

所有内容

概述

完整的数据资料 (PDF, 264kB)
英文

下载

The MAX1508 is an intelligent, stand-alone constant-current, constant-voltage (CCCV), thermally regulated linear charger for a single-cell lithium-ion (Li+) battery. The MAX1508 integrates the current-sense circuit, MOS pass element, and thermal-regulation circuitry, and also eliminates the reverse-blocking Schottky diode, to create the simplest and smallest charging solution for hand-held equipment.

The MAX1508 functions as a stand-alone charger to control the charging sequence from the prequalification state through fast-charge, top-off charge, and full-charge indication. The MAX1508Y and MAX1508Z eliminate the prequalification state to allow startup into a load without a battery.

Proprietary thermal-regulation circuitry limits the die temperature to +100°C when fast charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the IC.

The MAX1508 achieves high flexibility by providing an adjustable fast-charge current by an external resistor. Other features include the charging status (active-low CHG) of the battery, an active-low control input (active-low EN) for the MAX1508 and MAX1508Z (active-high control input for the MAX1508Y), and an active-low input power-source detection output (active-low ACOK).

The MAX1508 accepts a +4.25V to +13V supply, but disables charging when the input voltage exceeds +7V to protect against unqualified or faulty AC adapters. The MAX1508 operates over the extended temperature range (-40°C to +85°C) and is available in a compact 8-pin thermally enhanced 3mm x 3mm thin DFN package with 0.8mm height.

关键特性

应用/使用

Stand-Alone Linear 1-Cell Li+ Battery Charger
No External FET, Reverse-Blocking Diode, or Current-Sense Resistor Required
Programmable Fast-Charge Current (0.8A max)
Proprietary Die-Temperature Regulation Control (+100°C)
+4.25V to +13V Input Voltage Range with Input Overvoltage Protection (OVP) Above +7V
Charge-Current Monitor for Fuel Gauging
Low Dropout Voltage—130mV at 0.425A
Input Power-Source Detection Output (active-low ACOK)
Soft-Start Limits Inrush Current
No Prequalification State for the MAX1508Y and MAX1508Z
Charge Status Output (CHG-bar) for LED or Microprocessor Interface
Small 3mm x 3mm 8-Pin Thin DFN Package, 0.8mm High
Active-Low Charge Enable (EN-bar) (MAX1508 and MAX1508Z)
Active-High Charge Enable (EN) (MAX1508Y)

	Bluetooth®设备
	蜂窝电话/无绳电话
	充电托架和坞站
	数码相机与MP3播放器
	PDA
	USB应用

Key Specifications: Battery Chargers

Part Number

Cell Chemistry

Number of Lithium-Ion cells

Protected V_IN (max) (V)

Charging V_IN (max) (V)

Internal FET/Transistor

Charger (V)

Charge Rate Set by

Max. Charge Current (A)

Charge Termination

Charge Regulation

Features

EV-Kit

Package

Smallest Available Package (max w/pins) (mm²)

RoHS Available

Operating Temp. Range (°C)

Price^**

MAX1508

Li-Ion
Li-Polymer

Yes

4.2

Resistor

0.8

External Control

Linear

•	Stand Alone

•	Thermal Die Regulation

Yes

THIN QFN (Dual)/8

Yes

-40 to +85

$1.88 @ 1k

See All Battery Chargers (60)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.