MAX1873TEEE+T

Battery Chargers Overview

The MAX1873TEEE+T is a simple current-limited switch-mode lithium-ion battery charger controller designed for efficient charging of 2-, 3-, or 4-series Li+ cells. It operates with an external P-channel MOSFET in a step-down DC-DC configuration, supporting input voltages up to 28V and output currents up to 4A. The device provides regulated charging current and voltage with less than ±0.75% total voltage error at the battery terminals. It features a 300kHz PWM oscillator to reduce noise and includes an AC adapter input-current-limit loop. The component supports Ni-based batteries and offers adjustable charging current with a 5µA shutdown battery current.

Battery Chargers Feature Summary

• Provides regulated charging current and voltage with high accuracy for multi-cell lithium-ion packs
• Integrates an AC adapter input-current-limit loop for safe power source management
• Utilizes a 300kHz PWM oscillator to minimize electromagnetic interference and noise
• Supports both lithium-ion and nickel-based battery chemistries with adjustable current settings

Battery Chargers Applications

• Notebook computers
• Portable internet tablets
• Hand-held instruments
• Desktop cradle chargers

Battery Chargers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm availability status as distribution channels may list limited stock or end-of-life conditions. Ensure the QSOP-16 package matches your PCB footprint requirements. Cross-reference the manufacturer's latest datasheet for any updates on recommended operating conditions or thermal performance guidelines before finalizing procurement.

Battery Chargers Selection Notes

Select this controller for designs requiring a low-cost, space-saving solution for 2-to-4 series Li+ battery packs. It is suitable for applications needing input voltages up to 28V and output currents up to 4A. Consider the external P-channel MOSFET requirement for the step-down topology. Evaluate the 300kHz switching frequency against noise sensitivity constraints in your system design.

Battery Chargers Part Context

The MAX1873 belongs to Maxim Integrated's family of switch-mode battery charger controllers. It is part of the PMIC category, specifically targeting portable electronics power management. The device simplifies charger design by integrating control logic while relying on external power switches for efficiency.

Battery Chargers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing BOM components if considering alternative controllers from the same manufacturer.