MAX8808X
1A Linear Li+ Battery Chargers with Integrated Pass FET and Thermal Regulation in 2mm x 2mm TDFN
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Key Features
Applications/Uses
| Charging VIN (V) (max) | 6.5 |
| Max. ICHG (A) | 1 |
| Cell Chemistry | Li-Ion Li-Polymer |
| # Lithium Ion Cells | 1 |
| Protected VIN (V) (max) | 15 |
| Charger (V) | 4.2 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | TDFN/8 |
| Budgetary Price (See Notes) | 1.98 |
Simplified Block Diagram
Technical Docs
| Data Sheet | 1A Linear Li+ Battery Chargers with Integrated Pass FET and Thermal Regulation in 2mm x 2mm TDFN | May 10, 2005 |
Support & Training
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Sampling:
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Parameters
| Charging VIN (V) (max) | 6.5 |
| Max. ICHG (A) | 1 |
| Cell Chemistry | Li-Ion Li-Polymer |
| # Lithium Ion Cells | 1 |
| Protected VIN (V) (max) | 15 |
| Charger (V) | 4.2 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | TDFN/8 |
| Budgetary Price (See Notes) | 1.98 |
Key Features
- Stand-Alone Linear 1-Cell Li+ Battery Charger
- No External FET, Reverse Blocking Diode, or Current-Sense Resistor Required
- Programmable Fast-Charge Current (1A max)
- Proprietary Die Temperature Regulation Control (+115°C)
- +4.25V to +15V Input Voltage Range with Input OVP Above +7V
- Charge-Current Monitor for Fuel Gauging
- Low Dropout Voltage—300mV at 500mA
- Input Power-Source Detection Output (Active-Low ACOK) and Charge-Enable Input (Active-Low EN or EN)
- Soft-Start Limits Inrush Current
- Charge-Status Output (Active-Low CHG) for LED or Microprocessor (µP) Interface
- Tiny 2mm x 2mm 8-Pin TDFN Package, 0.8mm (max) Height
Applications/Uses
- Cell Phones/Cordless Phones
- Charging Cradles and Docks
- Digital Still Cameras and MP3 Players
- Smartphones and PDAs
- USB Appliances
Description
The MAX8808X functions as a stand-alone charger to control the charging sequence from the prequalification state through fast-charge, top-off charge, and fullcharge indication. The MAX8808Y and MAX8808Z eliminate 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 MAX8808X/MAX8808Y/MAX8808Z achieve high flexibility by providing an adjustable fast-charge current with an external resistor. Other features include a battery charging-status indicator (active-low CHG), an active-low control input (EN) for the MAX8808X and MAX8808Z (active-high control input for the MAX8808Y), and an active-low input power-source detection output (active-low ACOK).
The MAX8808X/MAX8808Y/MAX8808Z accept a +4.25V to +15V supply, but disable charging when the input voltage exceeds +7V to protect against unqualified or faulty AC adapters. The MAX8808X/MAX8808Y/MAX8808Z operate over the extended temperature range (-40°C to +85°C) and are available in a compact 8-pin thermally enhanced 2mm x 2mm TDFN package with 0.8mm (max) height.
Technical Docs
| Data Sheet | 1A Linear Li+ Battery Chargers with Integrated Pass FET and Thermal Regulation in 2mm x 2mm TDFN | May 10, 2005 |
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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