MAX1772
PRODUCTIONLow-Cost, Multichemistry Battery-Charger Building Block
0.7% Accurate, Input-Current-Limited, Multichemistry Battery Charger Offers Most Complete Solution
- Part Models
- 2
- 1ku List Price
- Starting From $9.37
Overview
- Input Current Limiting
- ±0.5% Output Voltage Accuracy Using Internal Reference (0°C to +85°C)
- Programmable Battery Charge Current >4A
- Analog Inputs Control Charge Current and Charge Voltage
- Monitor Outputs for:
- Current Drawn from AC Input Source
- Charging Current
- AC Adapter Present
- Up to 18.2V (max) Battery Voltage
- 8V to 28V Input Voltage
- >95% Efficiency
- 99.99% (max) Duty Cycle for Low-Dropout Operation
- Charges Any Battery Chemistry: Li+, NiCd, NiMH, Lead Acid, etc.
The MAX1772 is a highly-integrated, multichemistry battery-charger control IC that simplifies the construction of accurate and efficient chargers. The MAX1772 uses analog inputs to control charge current and voltage and can be programmed by the host or hardwired. High efficiency is achieved by a buck topology with synchronous rectification.
Maximum current drawn from the AC adapter is programmable to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously. This enables the user to reduce the cost of the AC adapter. The MAX1772 provides outputs that can be used to monitor the current drawn from the AC adapter, battery-charging current, and the presence of an AC adapter.
The MAX1772 can charge two to four lithium-ion (Li+) series cells, easily providing 4A. When charging, the MAX1772 automatically transitions from regulating current to regulating voltage. It is available in a space-saving 28-pin QSOP package.
Applications
- Handheld Terminals
- Notebook and Subnotebook Computers
- PDAs and Other Handheld Devices
Documentation
Data Sheet 1
Technical Articles 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX1772EEI+ | QSOP | ||
| MAX1772EEI+T | QSOP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger ICs 1 | ||
| MAX1645A | Advanced-Chemistry-Independent, Level-2 Battery Chargers with Input Current Limiting | |
Evaluation Kits
Evaluation Kit for the MAX1772
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