MAX1644EAE+

更新时间： 2024-09-16 13:10:23

品牌	Logo	应用领域
美信 - MAXIM		电池
页数	文件大小	规格书
32页	185K
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数据手册
替代型号

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MAX1644EAE+ 数据手册

19-1566; Rev 0a; 10/99

Ad va n c e d Ch e m is t ry-In d e p e n d e n t , Le ve l 2

Ba t t e ry Ch a rg e r w it h In p u t Cu rre n t Lim it in g

MAX1645

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

Fe a t u re s

The MAX1645 is a hig h-e ffic ie nc y b a tte ry c ha rg e r

capable of charging batteries of any chemistry type. It

uses the Intel System Management Bus (SMBus ) to

control voltage and current charge outputs.

♦ Input Current Limiting

♦ 175sec Charge Safety Timeout

♦ 128mA Wake-Up Charge

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

automatically transitions from regulating current to reg-

ulating voltage. The MAX1645 can also limit line input

current so as not to exceed a predetermined current

drawn from the DC source. A 175sec charge safety

time r p re ve nts “runa wa y c ha rg ing ” s hould the

MAX1645 stop receiving charging voltage/current com-

mands.

♦ 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 circuitry that lowers the minimum input-to-

outp ut volta g e d rop b y a llowing the d uty c yc le to

exceed 99%. The MAX1645 can easily charge one to

four series Li+ cells.

♦ ±0.8% Output Voltage Accuracy with Internal

Reference

♦ 3A max Battery Charge Current

♦ 6-Bit Charge Current Setting

Ap p lic a t io n s

Notebook Computers

♦ 99.99% max Duty Cycle for Low-Dropout Operation

♦ Load/Source Switchover Drivers

♦ >97% Efficiency

Point-of-Sale Terminals

Personal Digital Assistants

P in Co n fig u ra t io n

Ord e rin g In fo rm a t io n

PART

TEMP. RANGE

PIN-PACKAGE

TOP VIEW

MAX1645EEI

-40°C to +85°C

28 QSOP

DCIN

LDO

CLS

28 CVS

27 PDS

26 CSSP

25 CSSN

24 BST

23 DHI

REF

CCS

CCI

MAX1645

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.

QSOP

________________________________________________________________ Maxim Integrated Products

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

For small orders, phone 1-800-835-8769.

12 3 4 5 6 7...32

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MAX1644EAE+ 替代型号

型号	品牌	替代类型	描述	数据表
MAX1644EAE+T	MAXIM	类似代替	Switching Regulator, Current-mode, 3.5A, 350kHz Switching Freq-Max, PDSO16, 5.30 MM, 0.65
MAX1644EAE-T	MAXIM	类似代替	2A, Low-Voltage, Step-Down Regulator with Synchronous Rectification and Internal Switches
MAX1644EAE	MAXIM	类似代替	PLASTIC ENCAPSULATED DEVICES

与MAX1644EAE+相关器件

型号	品牌	获取价格	描述	数据表
MAX1644EAE+T	MAXIM	获取价格	Switching Regulator, Current-mode, 3.5A, 350kHz Switching Freq-Max, PDSO16, 5.30 MM, 0.65
MAX1644EAE-T	MAXIM	获取价格	2A, Low-Voltage, Step-Down Regulator with Synchronous Rectification and Internal Switches
MAX1644EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX2102[MAX2102EVKIT ]
MAX1645	MAXIM	获取价格	Advanced Chemistry-Independent, Level 2 Battery Chargers with Input Current Limiting
MAX1645A	MAXIM	获取价格	Advanced-Chemistry-Independent.Level-2 Battery Chargers with Input Current Limiting
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

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