MAX1879EUA+ by Analog Devices

Simple, Efficient, 1-Cell Li+ Pulse Charger

Status: Active
Series: MAX1879
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

The MAX1879 single-cell lithium-ion (Li+) battery charger utilizes an efficient pulse-charging architecture to minimize power dissipation in portable devices. This architecture combines the efficiency of switch-mode chargers with the simplicity and low cost of linear chargers. This simple device, in conjunction with a current-limited wall cube and a PMOS transistor, allows safe and fast charging of a single Li+ cell. The MAX1879 initiates charging in one of three ways: battery insertion, charger power-up, or toggling the THERM pin. Key safety features include continuous voltage and temperature monitoring, a preset charger time-out, and an 8mA precharge current mode to charge near-dead cells. Automatic detection of input power removal shuts down the device, minimizing current drain from the battery. An overall system accuracy of 0.75% ensures that the cell capacity is fully utilized without cycle life degradation. The MAX1879 is offered in a space-saving 8-pin µMAX® package. An evaluation kit (MAX1879EVKIT) is available to help reduce design time.

Prices starting from US$2.03


Distributor Starting From Stock
Logo for element14 element14 US$2.20
128
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Logo for Newark Electronics Newark Electronics US$2.71
78
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Features

Simple Design Minimizes Heat
Low Component Count, No Inductor
Battery-Full Indicator
0.75% Accurate Battery Regulation
1.5µA (max) Battery Current Drain with Wall Cube Removed
Restart Charging at 4.0V
Continuous Overvoltage and Overtemperature Protection
Safely Precharges Near-Dead Cells
Automatic Power-Down when Power Source is Removed
Charges 1 Cell from as Low as 4.5V
Pin-Compatible Upgrade to MAX1679

Specifications

Charging VIN (V) (max) 22
Max. ICHG (A) 2
Cell Chemistry Li-IonLi-Polymer
# Lithium Ion Cells 1
Protected VIN (V) (max) 22
Charger (V) 4 to 4.2
Oper. Temp. (°C) -40 to +85
Package/Pins UMAX/8
BudgetaryPrice (See Notes) 1.66


MAX1879EUA+ Semiconductors - ICs by Analog Devices

BATT CHARGER LI-ION 2A UMAX-8

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

Specifications

Battery Type Li-Ion
Input Voltage 22V
Battery Charge Voltage 4.2V
Charge Current Max 2A
Battery IC Case Style µMAX
No. of Pins 8Pins
No. of Series Cells 1
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)

Alternative Descriptions

BATT CHARGER, LI-ION, 2A, UMAX-8 | element14
Batt Charger, Li-Ion, 2A, Umax-8 | Newark Electronics

Frequently Asked Questions

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Is the MAX1879EUA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1879EUA+ have stock available?

Authorised distributors including element14, Newark Electronics and Farnell have stock available or on a lead time for MAX1879EUA+ .

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