Product Details
Key Features
Applications/Uses
Charging VIN (V) (max) | 7 |
Max. ICHG (A) | 0.8 |
Cell Chemistry | Li-Ion Li-Polymer |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 13 |
Charger (V) | 4.2 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | TDFN/8 |
Budgetary Price (See Notes) | 2.4 |
Simplified Block Diagram
Technical Docs
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Sampling:
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Parameters
Charging VIN (V) (max) | 7 |
Max. ICHG (A) | 0.8 |
Cell Chemistry | Li-Ion Li-Polymer |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 13 |
Charger (V) | 4.2 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | TDFN/8 |
Budgetary Price (See Notes) | 2.4 |
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 (0.8A max)
- Proprietary Die-Temperature Regulation Control (+100°C)
- +4.25V to +13V Input Voltage Range with Input Overvoltage Protection (OVP) Above +7V
- Charge-Current Monitor for Fuel Gauging
- Low Dropout Voltage—130mV at 0.425A
- Input Power-Source Detection Output (Active-Low ACOK)
- Soft-Start Limits Inrush Current
- No Prequalification State for the MAX1508Y and MAX1508Z
- Charge Status Output (Active-Low CHG) for LED or Microprocessor Interface
- Small 3mm x 3mm 8-Pin Thin DFN Package, 0.8mm High
- Active-Low Charge Enable (Active-Low EN) (MAX1508 and MAX1508Z)
- Active-High Charge Enable (EN) (MAX1508Y)
Applications/Uses
- Bluetooth® Equipment
- Cell Phones/Cordless Phones
- Charging Cradles and Docks
- Digital Cameras and MP3 Players
- PDAs
- USB Appliances
Description
The MAX1508 functions as a stand-alone charger to control the charging sequence from the prequalification state through fast-charge, top-off charge, and full-charge indication. The MAX1508Y and MAX1508Z eliminate the prequalification state to allow startup into a load without a battery.
Proprietary thermal-regulation circuitry limits the die temperature to +100°C when fast charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the IC.
The MAX1508 achieves high flexibility by providing an adjustable fast-charge current by an external resistor. Other features include the charging status (active-low CHG) of the battery, an active-low control input (active-low EN) for the MAX1508 and MAX1508Z (active-high control input for the MAX1508Y), and an active-low input power-source detection output (active-low ACOK).
The MAX1508 accepts a +4.25V to +13V supply, but disables charging when the input voltage exceeds +7V to protect against unqualified or faulty AC adapters. The MAX1508 operates over the extended temperature range (-40°C to +85°C) and is available in a compact 8-pin thermally enhanced 3mm x 3mm thin DFN package with 0.8mm height.
Technical Docs
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.