MAX1645A

更新时间： 2024-11-08 23:45:47

品牌	Logo	应用领域
美信 - MAXIM		电池
页数	文件大小	规格书
32页	329K
描述
Advanced-Chemistry-Independent.Level-2 Battery Chargers with Input Current Limiting

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MAX1645A 数据手册

19-1566; Rev 2; 1/01

Advanced Chemistry-Independent, Level 2

Battery Chargers with Input Current Limiting

General Description

Features

The MAX1645 are high-efficiency battery chargers capa-

ble of charging batteries of any chemistry type. It uses the

Intel System Management Bus (SMBus) to control volt-

age and current charge outputs.

ꢀ Input Current Limiting

ꢀ 175s Charge Safety Timeout

ꢀ 128mA Wake-Up Charge

When charging lithium-ion (Li+) batteries, the MAX1645

automatically transition from regulating current to regu-

lating voltage. The MAX1645 can also limit line input

current so as not to exceed a predetermined current

drawn from the DC source. A 175s charge safety timer

prevents “runaway charging” should the MAX1645 stop

receiving charging voltage/ current commands.

ꢀ Charges Any Chemistry Battery: Li+, NiCd,

NiMH, Lead Acid, etc.

ꢀ Intel SMBus 2-Wire Serial Interface

ꢀ Compliant with Level 2 Smart Battery Charger

Spec Rev. 1.0

ꢀ +8V to +28V Input Voltage Range

ꢀ Up to 18.4V Battery Voltage

ꢀ 11-Bit Battery Voltage Setting

The MAX1645 employs a next-generation synchronous

buck control circuity that lowers the minimum input-to-

output voltage drop by allowing the duty cycle to

exceed 99%. The MAX1645 can easily charge one to

four series Li+ cells.

ꢀ

0.8ꢀ ꢁutput Voltage Accuracy with Internal

Reference

Applications

ꢀ 3A max Battery Charge Current

ꢀ 6-Bit Charge Current Setting

Notebook Computers

Point-of-Sale Terminals

Personal Digital Assistants

ꢀ 99.99ꢀ max Duty Cycle for Low-Dropout ꢁperation

ꢀ Load/Source Switchover Drivers

ꢀ >97ꢀ Efficiency

Ordering Information

Pin Configuration

PART

TEMP. RANGE

-40°C to +85°C

PIN-PACKAGE

28 QSOP

TOP VIEW

MAX1645EEI

MAX1645AEEI

DCIN

LDO

CLS

REF

28 CVS

27 PDS

26 CSSP

25 CSSN

24 BST

23 DHI

28 QSOP

CCS

CCI

MAX1645

MAX1645A

CCV

GND

BATT

22 LX

21 DLOV

20 DLO

19 PGND

18 CSIP

17 CSIN

16 PDL

15 INT

DAC 10

THM 12

SCL 13

SDA 14

Typical Operating Circuit appears at end of data sheet.

SMBus is a trademark of Intel Corp.

QSꢁP

________________________________________________________________ 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...32

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与MAX1645A相关器件

型号	品牌	获取价格	描述	数据表
MAX1645AEEI	MAXIM	获取价格	Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting
MAX1645AEEI+	MAXIM	获取价格	Battery Charge Controller, PDSO28, QSOP-28
MAX1645AEEI+T	MAXIM	获取价格	Battery Charge Controller, PDSO28, QSOP-28
MAX1645AEEI-T	MAXIM	获取价格	暂无描述
MAX1645AEVKIT\|MAX1645AEVSYS	MAXIM	获取价格	Evaluation Kit/Evaluation System for the MAX1645A
MAX1645B	MAXIM	获取价格	Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting
MAX1645B	ADI	获取价格	高级、与化学类型无关的Level 2电池充电器，带有输入限流
MAX1645BEEI	MAXIM	获取价格	Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting
MAX1645BEEI+	MAXIM	获取价格	暂无描述
MAX1645BEEI+T	MAXIM	获取价格	暂无描述

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