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MAX8814

Maxim Integrated Products
Part Number MAX8814
Manufacturer Maxim Integrated Products
Description 28V Linear Li Battery Charger
Published May 4, 2009
Detailed Description 19-0994; Rev 0; 10/07 KIT ATION EVALU E L B AVAILA 28V Linear Li+ Battery Charger with Smart Autoboot Assistant Genera...
Datasheet PDF File MAX8814 PDF File

MAX8814
MAX8814

Overview
19-0994; Rev 0; 10/07 KIT ATION EVALU E L B AVAILA 28V Linear Li+ Battery Charger with Smart Autoboot Assistant General Description Features o CCCV, Thermally Regulated Linear 1-Cell Li+ Battery Charger o No External MOSFET, Reverse Blocking Diode, or Current-Sense Resistor o Programmable Fast-Charge Current (1ARMS max) o Proprietary Die Temperature Regulation Control (+115°C) o 4.
25V to 28V Input Voltage Range with Input OVP Above +7V o Charge-Current Monitor for Fuel Gauging (ISET) o Low Dropout Voltage (300mV at 500mA) o Input Power-Source Detection Output (POK), Charge-Enable Input (EN) o Soft-Start Limits Inrush Current o Output for Autobooting (ABO) o Tiny 2mm x 2mm, 8-Pin TDFN Package, 0.
8mm Height (max) MAX8814 www.
datasheet4u.
com The MAX8814 intelligent, stand-alone constant-current, constant-voltage (CCCV), thermally regulated linear charger is designed for charging a single-cell lithiumion (Li+) battery.
The MAX8814 integrates the currentsense circuit, MOSFET pass element, thermalregulation circuitry, and eliminates the reverse-blocking Schottky diode to create the simplest and smallest charging solution for handheld equipment.
The IC controls the charging sequence from the prequalification state through constant-current fast-charge and the final constant voltage charge.
Proprietary thermal-regulation circuitry limits the die temperature during fast-charging or when the IC is exposed to high ambient temperatures, allowing maximum charging current without damaging the IC.
The MAX8814 achieves high flexibility by providing an adjustable fast-charge current through an external resistor.
Other features include an active-low control input (EN) and an active-low input power-source detection output (POK).
The IC also features a booting assistant circuit that distinguishes input sources and battery connection and provides an output signal (ABO) for system booting.
The MAX8814 accepts an input supply range from 4.
25V to 28V, but disables charging if the input...


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