MAX1737EEI+ by Analog Devices

Stand-Alone Switch-Mode Lithium-Ion Battery-Charger Controller


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.

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Prices starting from US$4.11

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Analog Devices
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Transfer Multisort Elektronik
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element14
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Features

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

Specifications

Charging VIN (V) (max) 28
Max. ICHG (A) 4
Cell Chemistry Li-IonLi-Polymer
# Lithium Ion Cells 1234
Protected VIN (V) (max) 28
Charger (V) 4 to 17.6
Oper. Temp. (°C) -40 to +85
Package/Pins QSOP/28
BudgetaryPrice (See Notes) 3.27


MAX1737EEI+ Semiconductors - ICs by Analog Devices

CONTROLLER BATTERY CHARGER 1737

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Battery Type Li-Ion Li-Pol
Input Voltage 28V
Battery Charge Voltage 4.2V
Charge Current Max 4A
Battery IC Case Style QSOP
No. of Pins 28Pins
No. of Series Cells 4
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Base Number 1737
Battery Management Function Charger Status Monitor
IC Temperature Range Industrial
Input Voltage Max 28V
Operating Temperature Range -40°C to +85°C
Output Voltage Max 17.6V
Supply Voltage Min 6V
Termination Type Surface Mount Device

Alternative Descriptions

Stand-Alone Switch-Mode Lithiu | Analog Devices
SWITCH-MODE LITHIUM-ION BATTERY-CHARGER | RS
IC: PMIC | Transfer Multisort Elektronik
CONTROLLER, BATTERY CHARGER, 1737 | element14
Controller, Battery Charger, 1737 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX1737EEI+ ?

Additional datasheets, footprints and schematics for MAX1737EEI+ are listed on our Part Details page. You can also find images and similar parts to MAX1737EEI+ on this page.

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Is the MAX1737EEI+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1737EEI+ have stock available?

Authorised distributors including Analog Devices, RS, Transfer Multisort Elektronik, element14 and Newark Electronics have stock available or on a lead time for MAX1737EEI+ .

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