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구매 가능: 생산 중

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전체 데이터 시트 (PDF, 188kB) English 다운로드 The MAX1737 is a switch-mode lithium-ion (Li+) battery charger that charges one to four cells. It provides a regulated charging current and a regulated voltage with only a ±0.8% total voltage error at the battery terminals. The external N-channel switch and synchronous rectifier provide high efficiency over a wide input voltage range. A built-in safety timer automatically terminates charging once the adjustable time limit has been reached. The MAX1737 regulates the voltage set point and charging current using two loops that work together to transition smoothly between voltage and current regulation. An additional control loop monitors the total current drawn from the input source to prevent overload of the input supply, allowing the use of a low-cost wall adapter. The per-cell battery voltage regulation limit is set between +4.0V and +4.4V and can be set from one to four by pin strapping. Battery temperature is monitored by an external thermistor to prevent charging if the battery temperature is outside the acceptable range. The MAX1737 is available in a space-saving 28-pin QSOP package. Use the evaluation kit (MAX1737EVKIT) to help reduce design time.

EV 킷 이용 가능:  MAX1737EVKIT  

주요기능		애플리케이션/용도
Stand-Alone Charger for Up to Four Li+ Cells ±0.8% Accurate Battery Regulation Voltage Low Dropout: 98% Duty Cycle Safely Precharges Near-Dead Cells Continuous Voltage and Temperature Monitoring < 1µA Shutdown Battery Current Input Voltage Up to +28V Safety Timer Prevents Overcharging Input Current Limiting Space-Saving 28-Pin QSOP 300kHz PWM Oscillator Reduces Noise 90% Conversion Efficiency		데스크톱 크래들 충전기 핸드헬드 기기 (PDA, 팜탑) Li+ 배터리 팩 노트북 컴퓨터

Key Specifications:  Battery Chargers

Part Number

Cell Chemistry

Lithium Ion Cells

Protected VIN (V)

Charging VIN (V)

Charge Rate Set by

Max. ICHG (A)

Charge Termination

Charge Regulation

Features

EV Kit

Package/Pins

Smallest Available Pckg. (mm2)

Oper. Temp. (°C)

Price

max

max

≥

max w/pins

See Notes

MAX1737

Li-Ion Li-Polymer

1 2 3 4

28

28

Resistor

4

Timer

Switchmode

Input Current Limit Stand Alone Thermistor Input Timer

Yes

QSOP/28

62

-40 to +85

$2.85 @1k

모두 보기Battery Chargers (62)

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제품 설명   주요기능   애플리케이션/용도   주요 사양   다이어그램

데이터 시트   애플리케이션 노트   디자인 가이드   Engineering Journal   신뢰성 보고서   소프트웨어/모델   EV 킷

가격 및 재고 유모   샘플   온라인 구매   패키지 정보   Lead-Free 정보

관련된 제품군   참고 사항   EV 킷

문서 레퍼런스 19-1793; 개정판 4; 2007-09-14
이 페이지는 최근에 변경됨: 2009-09-25