MAX8804W
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MAX8804W

High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN

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Industry's Smallest Dual Input Li+ Chargers Withstand 30V DC with Thermal Regulation, Allowing for Safest and Fastest Charging

Part Details
Features
  • Complete Chargers for Single-Cell Li+ Battery
  • Dual-Input, 30V AC Adapter/16V USB
  • No External FET, Blocking Diode, or Sense Resistor Required
  • Automatic USB/AC Adapter Input Selection
  • Easy Programmable Fast-Charge Current and Top-Off Threshold
  • Proprietary Die Temperature Regulation Control
  • ±5% Fast-Charge Current-Limit Accuracy
  • Battery Pack Detection Input (MAX8804V/MAX8804W)
  • Power-Present and Charger-Status Outputs
  • No Prequalification Charge (MAX8804Y)
  • Tiny 2mm x 3mm Thermally Enhanced TDFN Package
  • USB Charging
Additional Details
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The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z intelligent, dual-input, stand-alone, constant-current, constant-voltage (CCCV), thermally regulated linear chargers are designed for a single-cell lithium-ion (Li+) battery. They integrate the current-sense circuit, MOS pass element, thermal-regulation circuitry, and overvoltage protection (OVP), and eliminate the reverse-blocking Schottky diode.

The MAX8804V/MAX8804W/MAX8804Z function as stand-alone chargers to control the charging sequence from the prequalification state through fast-charge, topoff charge, and full-charge indication. The MAX8804Y eliminates the prequalification state to allow startup into a load without a battery. Proprietary thermal-regulation circuitry limits the die temperature when fast-charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the IC.

The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z achieve high flexibility by providing an adjustable DC/USB fast-charge current through a simple single-wire interface (SET input). The chargers automatically select between either a USB or AC adapter input source. The AC adapter charge current is programmable from 400mA to 700mA in 50mA steps through a serial interface. The USB charge current is programmable to 95mA, 380mA, or 475mA through the same interface. Other features include an active-low battery charging-status indicator (active-low CHG), an active-low power-OK indicator (active-low POK), an active-low USB input detection output (active-low USBPWR) on the MAX8804Y/MAX8804Z, and battery pack detection (DETBAT) on the MAX8804V/MAX8804W.

The MAX8804V has 120mA, 140mA, 180mA, and 200mA active-low CHG top-off threshold settings, while the MAX8804W/MAX8804Y/MAX8804Z have 70mA, 80mA, 90mA, and 100mA. The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z accept a 4.15V to 30V DC source voltage or a 4.15V to 16V USB input voltage, but disable charging when either input voltage exceeds 7.5V to protect against unqualified or faulty input sources. The MAX8804V/MAX8804W/MAX8804Y/MAX8804Z operate over the extended temperature range (-40°C to +85°C) and are available in a tiny 8-pin thermally enhanced 2mm x 3mm TDFN package.

Applications

  • Cell Phones/Smartphones
  • Digital Cameras
  • MP3 Players
  • Other Handheld Devices
  • Portable Media Players

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX8804ZEVKIT

Evaluation Kit for the MAX8804V, MAX8804W, MAX8804Y, and MAX8804Z

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MAX8804ZEVKIT

Evaluation Kit for the MAX8804V, MAX8804W, MAX8804Y, and MAX8804Z

Evaluation Kit for the MAX8804V, MAX8804W, MAX8804Y, and MAX8804Z

Features and Benefits

  • Complete Charger for Single-Cell Li+ Battery
  • Dual-Input, 30V AC Adapter/16V USB
  • No External FET, Blocking Diode, or Sense Resistor Required
  • Automatic USB/AC Adapter Input Selection
  • Easy Programmable Fast-Charge Current and Top-Off Threshold
  • Proprietary Die Temperature Regulation Control
  • ±5% Fast-Charge Current-Limit Accuracy
  • Battery-Pack Detection Input (MAX8804V/MAX8804W)
  • Power-Present and Charger-Status Outputs
  • No Prequalification Charge (MAX8804Y)
  • Tiny 2mm x 3mm Thermally Enhanced TDFN Package
  • Fully Assembled and Tested

Product Detail

The MAX8804Z evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the highly integrated MAX8804Z linear battery charger for single-cell lithium-ion (Li+) batteries. The EV kit safely charges a single Li+ battery to 4.2V. The EV kit accepts a 4.15V to 30V DC source voltage or a 4.15V to 16V USB input voltage, but disables charging when either input voltage exceeds 7.5V to protect against unqualified or faulty input sources. A simple single-wire SET input to the EV kit allows the user to enable/disable the charger or program the charge current and top-off threshold. Three LEDs on the EV kit indicate the power-OK, USB power status, and charger status. The MAX8804Z EV kit can also evaluate the MAX8804V/MAX8804W/MAX8804Y. To evaluate the MAX8804V/MAX8804W/MAX8804Y, order a free sample along with this EV kit.

Applications

  • Cell Phones/Smartphones
  • Digital Cameras
  • MP3 Players
  • Other Handheld Devices
  • Portable Media Players

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