MAX8804Y
High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN
Industry's Smallest Dual Input Li+ Chargers Withstand 30V DC with Thermal Regulation, Allowing for Safest and Fastest Charging
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Key Features
Applications/Uses
Simplified Block Diagram
Technical Docs
| Data Sheet | High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN | May 01, 2008 |
Support & Training
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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
Key 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
Applications/Uses
- Cell Phones/Smartphones
- Digital Cameras
- MP3 Players
- Other Handheld Devices
- Portable Media Players
Description
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.
Simplified Block Diagram
MAX8804, MAX8804V, MAX8804W, MAX8804Y, MAX8804Z: Typical Application Circuit
Technical Docs
| Data Sheet | High-Voltage, Dual-Input, USB/AC Adapter Chargers in 2mm x 3mm TDFN | May 01, 2008 |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact [email protected] with any questions regarding this Sample Site.
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