Product Details
Key Features
Applications/Uses
Charging VIN (V) (max) | 6.25 |
Max. ICHG (A) | 1.4 |
Cell Chemistry | Li-Ion Li-Polymer NiCd NiMH |
# NiMH/ NiCd Cells | 3 |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 13 |
Charger (V) | 4.1 4.2 4.5 4.95 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | TQFN/16 |
Budgetary Price (See Notes) | 2.62 |
Simplified Block Diagram
Technical Docs
Data Sheet | Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications | May 04, 2014 |
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.
Parameters
Charging VIN (V) (max) | 6.25 |
Max. ICHG (A) | 1.4 |
Cell Chemistry | Li-Ion Li-Polymer NiCd NiMH |
# NiMH/ NiCd Cells | 3 |
# Lithium Ion Cells | 1 |
Protected VIN (V) (max) | 13 |
Charger (V) | 4.1 4.2 4.5 4.95 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | TQFN/16 |
Budgetary Price (See Notes) | 2.62 |
Key Features
- Stand-Alone 1-Cell Li+ Charging, Microprocessor- Controlled 3-Cell NiMH/NiCd Charging
- No FET, Reverse-Blocking Diode, or Current- Sense Resistor Required
- 1.4A (max) Programmable Fast-Charge Current
- +95°C, +115°C, and +135°C Proprietary Programmable Die Temperature Regulation Control
- 4.5V to 13V Input Voltage Range with Input Overvoltage (OVLO) Protection Above 6.5V
- Programmable Top-Off Current Threshold: 10%, 20%, or 30% of the Fast-Charge Current
- Charge-Current Monitor for Fuel Gauging
- Programmable Safety Timer (3, 4.5, or 6 hours)
- Input Power Detection Output (active-low ACOK) and Charge Enable Input (active-low CHGEN)
- Automatic Recharge
- Digital Soft-Start Limits Inrush Current
- Charge Status Outputs for LEDs or µP Interface
Applications/Uses
- Bluetooth® Equipment
- Cell Phones/Cordless Phones
- Charging Cradles and Docks
- Digital Cameras and MP3 Players
- PDAs
- USB Appliances
Description
For single-cell Li+ batteries, the MAX1501 functions as a stand-alone charger to control the charging sequence from the prequalification state through fast charge, top-off, and charge termination. With 3-cell NiMH/NiCd batteries, the MAX1501 requires collaboration with a microcontroller to determine the best charging algorithm. 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 charger. The MAX1501 continually supplies a regulated output voltage under no-battery conditions, allowing battery changing without interrupting system power.
The device achieves high flexibility by providing an adjustable fast-charge current, top-off current, safety timer (disabled in the MAX1501Z), and thermal-regulation setpoint. Other features include input power detection (active-low ACOK) and input under-/overvoltage protection. The MAX1501 provides active-low control inputs.
The MAX1501 accepts a 4.5V to 13V supply, but disables charging when the input voltage exceeds 6.5V, preventing excessive power dissipation. The MAX1501 operates over the extended temperature range (-40°C to +85°C) and is available in a compact 16-pin thermally enhanced 5mm x 5mm thin QFN package with 0.8mm profile.
Technical Docs
Data Sheet | Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications | May 04, 2014 |
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.