MAX8814

PRODUCTION

28V Linear Li+ Battery Charger with Smart Autoboot Assistant

The Simplest, Safest, and Smallest Charging Solution for Handheld Equipment

Data Sheet (Rev. 3) Product Selection Table
Part Models
2
1ku List Price
Starting From $2.00
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Part Details

  • Reduces External Components and Total Cost
    • Integrated Current-Sensing Circuit, MOSFET Pass Element, and Thermally Regulation Circuitry
    • No Reverse Blocking Diode Required
  • Guarantees Safe and Accurate Battery Charging
    • Proprietary Die Temperature Regulation Control (+115°C) Allows Maximum Charging Current Without Damaging the IC
    • 4.25V to 28V Input Voltage Range with Over-Voltage Protection Above +7V to Protect Against Unqualified or Faulty AC Adapters
    • Soft-Start Limits Inrush Current
  • Integrated System Features for Compact Designs
    • Programmable Fast-Charge Current: 1ARMS Max
    • Charge-Current Monitor for Fuel Gauging (ISET)
    • Input Power-Source Detection Output (Active-Low POK) and Charge-Enable Input (Active-Low EN)
    • Output for Autobooting (ABO)
  • Reduce Power Dissipation
    • Low Dropout Voltage (300mV at 500mA)
MAX8814
28V Linear Li+ Battery Charger with Smart Autoboot Assistant
MAX8814, a stand-alone, CCCV, thermally regulated linear charger, is made to charge a single-cell lithium-ion (Li+) battery | Typical Operating Circuit
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Documentation

Data Sheet 1

Design Note 2

Technical Articles 2

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Hardware Ecosystem

Parts Product Life Cycle Description
Linear Battery Chargers 4
MAX1898
PRODUCTION Linear Charger for Single-Cell Li+ Battery
MAX1501
PRODUCTION Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications
MAX1508
PRODUCTION Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK Flag in 3mm x 3mm TDFN
MAX1507
PRODUCTION Linear Li+ Battery Charger with Integrated Pass FET and Thermal Regulation in 3mm x 3mm Thin DFN
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Evaluation Kits

MAX8814EVKIT

Evaluation Kit for the MAX8814

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Features and Benefits

  • CCCV, Thermally Regulated Linear 1-Cell Li+ Battery Charger
  • No External MOSFET, Reverse Blocking Diode, or Current-Sense Resistor
  • Programmable Fast-Charge Current (1ARMS max)
  • Proprietary Die Temperature Regulation Control (+115°C)
  • 4.25V to 28V Input Voltage Range with Input OVP Above 7V
  • Charge-Current Monitor for Fuel Gauging (ISET)
  • Low Dropout Voltage (300mV at 500mA)
  • Input Power-Source Detection Output (Active-Low POK) and Charge-Enable Input (Active-Low EN)
  • Soft-Start Limits Inrush Current
  • Output for Autobooting (ABO)
  • Fully Assembled and Tested

Product Details

The MAX8814 evaluation kit (EV kit) is a fully assembled and tested printed-circuit board (PCB) for evaluating the MAX8814 28V linear Li+ battery charger. The MAX8814 EV kit operates from an input supply range of 4.25V to 28V, but the IC disables charging if the input voltage exceeds 7V to protect against unqualified or faulty AC adapters. The MAX8814 EV kit features an adjustable fast-charge current set by an external resistor (R2). Other features include an active-low control input (active-low EN) and an active-low input power source detection output (active-low 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.
MAX8814EVKIT
Evaluation Kit for the MAX8814

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