Product Details
Key Features
Applications/Uses
Charging VIN (V) (max) | 26 |
Cell Chemistry | Li-Ion Li-Polymer NiCd NiMH |
# NiMH/ NiCd Cells | 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 |
# Lithium Ion Cells | 1 2 3 4 5 6 |
Protected VIN (V) (max) | 26 |
Charger (V) | 2 to 24 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | QSOP/16 |
Budgetary Price (See Notes) | 3.63 |
Simplified Block Diagram
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.
Parameters
Charging VIN (V) (max) | 26 |
Cell Chemistry | Li-Ion Li-Polymer NiCd NiMH |
# NiMH/ NiCd Cells | 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 |
# Lithium Ion Cells | 1 2 3 4 5 6 |
Protected VIN (V) (max) | 26 |
Charger (V) | 2 to 24 |
Oper. Temp. (°C) | -40 to +85 |
Package/Pins | QSOP/16 |
Budgetary Price (See Notes) | 3.63 |
Key Features
- 95% Efficiency
- +5.5V to +26V Input Supply Range
- 2V to 24V Adjustable-Output Voltage Range
- 100% Maximum Duty Cycle (Low Dropout)
- Up to 500kHz PWM Operation
- Optional Synchronous Rectifier
- 16-Pin QSOP Package
- Current-Sense Accuracy:
- 2% (MAX1641)
- 5.3% (MAX1640)
Applications/Uses
- Backup Battery Charger
- Battery-Powered Applications
- Cell Phones
- Cordless Phones
- Handy Terminals
- Laptop, Notebook, and Palmtop Computers
- PCS Phones
- Portable Consumer Products
Description
The MAX1640/MAX1641 step-down pulse-width-modulation (PWM) controllers use an external P-channel MOSFET switch and an optional, external N-channel MOSFET synchronous rectifier for increased efficiency. An internal low-dropout linear regulator provides power for the internal reference and circuitry as well as the gate drive for the N-channel synchronous rectifier.
The MAX1640/MAX1641 are available in space-saving, 16-pin narrow QSOP packages.
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.