Datasheet > MAX1757

MAX1757

更新时间： 2024-11-16 14:57:39

品牌	Logo	应用领域
亚德诺 - ADI		电池开关
页数	文件大小	规格书
17页	823K
描述
独立的开关模式Li+电池充电器，内置14V开关

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中文翻译

获取价格

数据手册

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MAX1757 数据手册

EVALUATION KIT AVAILABLE

Stand-Alone, Switch-Mode

Li+ Battery Charger with

Internal 14V Switch

MAX1757

General Description

Benefits and Features

The MAX1757 is a switch-mode lithium-ion (Li+) battery

charger that charges one to three cells. It provides a

regulated charging current accurate to 1ꢀ0 and a

regulated voltage with only a ꢀ.ꢁ0 total voltage error

at the battery terminals. The internal high-side switch

delivers a programmable current of up to 1.5A to

charge the battery. The built-in safety timer automati-

cally terminates charging once the adjustable time limit

has been reached.

The MAX1757 regulates the voltage set point and

charging current using two loops that work together to

transition smoothly between voltage and current regula-

tion. An additional control loop monitors the total cur-

rent drawn from the input source (charging + system)

and by automatically reducing battery-charging current

prevents overload of the input supply, allowing the use

of a low-cost wall adapter.

• Stand-Alone Charger Safely Charges Up to Three Li+

Batteries

• Continuous Voltage and Temperature Monitoring

• Input Current Limiting

• ±0.8% Battery Regulation Voltage Accuracy

• Up to 1.5A Programmable Charge Current

• Low Power Consumption Extends Battery Life

• 0.1μA Shutdown Battery Current

• Low-Dropout 98% Duty Cycle

• Flexible Input Voltage Range Enables the Use of Low

Cost Wall Adapters

• Input Voltage Up to 14V

• Precharges Near-Dead Cells

• Fixed 300kHz PWM Oscillator Allows Effective Noise

Filtering

The per-cell battery regulation voltage is set between

4.ꢀV and 4.4V using standard 10 resistors. The number

of cells is set from 1 to 3 by pin strapping. Battery tem-

perature is monitored by an external thermistor to prevent

charging outside the acceptable temperature range.

• 28-Pin SSOP Package Saves Board Space

Ordering Information

PART

TEMP. RANGE

PIN-PACKAGE

The MAX1757 is available in a space-saving 2ꢁ-pin

SSOP package. Use the MAX1757EVKIT to help

reduce design time. For a stand-alone charger with a

2ꢁV switch, refer to the MAX175ꢁ data sheet. For a

charger controller capable of up to 4A charging cur-

rent, refer to the MAX1737 data sheet.

MAX1757EAI

-4ꢀ°C to +ꢁ5°C

2ꢁ SSOP

Typical Operating Circuit

6V to 14V

Applications

Li+ Battery Packs

DCIN

CSSP

CSSN

PDAs

SYSTEM

LOAD

REF

Notebook Computers

Hand-Held Instruments

Desktop Cradle Chargers

HSD

MAX1757

ISETOUT

BST

Pin Configuration

TOP VIEW

ISETIN

CELL

PGND

ISETTIN

ISETOUT

THM

28 DCIN

27 CSSP

26 CSSN

25 CCV

24 CCI

VADJ

BATT

THM

REF

MAX1757

CCS

CCI

Li+ BATTERY

1 TO 3 CELLS

GND

23 CCS

THERM

VADJ

22 BST

BATT

21 CS

HSD

20 LX

CCV

FASTCHG

FULLCHG

FAULT

HSD 10

CELL 11

19 LX

18 PGND

17 SHDN

16 FULLCHG

15 FASTCHG

TIMER1

TIMER2

SHDN

TIMER1 12

TIMER2 13

FAULT 14

OFF

GND

SSOP

19-1754; Rev 2; 5/15

12 3 4 5 6 7...17

中文翻译

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与MAX1757相关器件

型号	品牌	获取价格	描述	数据表
MAX17570	ADI	获取价格	4.5V至60V、300mA、超小型、高效率同步降压DC-DC转换器
MAX17571	ADI	获取价格	4V至60V、1.5A、高效、同步降压DC-DC转换器
MAX17572	MAXIM	获取价格	4.5Vâ60V, 1A, High-Efficiency, Synchronous
MAX17572	ADI	获取价格	4.5V-60V、1A、高效、同步降压型DC-DC转换器，带内部补偿
MAX17572ATC+	MAXIM	获取价格	4.5Vâ60V, 1A, High-Efficiency, Synchronous
MAX17573	ADI	获取价格	具有内部补偿的4.5V至60V、3.5A、高效、同步降压DC-DC转换器
MAX17574	MAXIM	获取价格	4.5Vâ60V, 3A, High-Efficiency
MAX17574	ADI	获取价格	4.5V-60V、3A、高效、同步降压型DC-DC转换器，带内部补偿
MAX17574ATG+	MAXIM	获取价格	Switching Regulator, Current-mode, 5.85A, 2450kHz Switching Freq-Max, BICMOS, TQFN-24
MAX17574EVKITB	MAXIM	获取价格	Operates from a 6.5V to 60V Input Supply

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