MAX1873REEE+T

Battery Chargers Overview

The MAX1873REEE+T is a simple current-limited switch-mode lithium-ion battery charger controller manufactured by Analog Devices Inc./Maxim Integrated. Designed for efficient charging of 2-, 3-, or 4-series lithium-ion cells, it supports output currents up to 4A. The device operates with an input voltage range of 6V to 28V and provides a regulated charging voltage with less than ±0.75% total error at the battery terminals. It features a 300kHz PWM oscillator to reduce noise and includes a shutdown mode with only 5µA battery current consumption. The component is housed in a space-saving 16-pin QSOP package suitable for surface-mount installation.

Battery Chargers Feature Summary

• Provides regulated charging current and voltage for multi-cell lithium-ion batteries
• Integrates an AC adapter input-current-limit loop for safe power supply operation
• Supports Ni-based battery charging capabilities alongside Li-ion chemistries
• Utilizes an external P-channel MOSFET in a step-down DC-DC configuration

Battery Chargers Applications

• Notebook computers
• Portable Internet tablets
• 2-, 3-, or 4-cell Li+ battery pack chargers
• Hand-held instruments
• Desktop cradle chargers

Battery Chargers Procurement Notes

Verify the specific suffix 'REEE' against official Analog Devices documentation to confirm package type and tape-and-reel availability. Confirm RoHS compliance status and lead-free manufacturing details directly from the manufacturer's datasheet. Ensure the ordering part number matches the exact pinout and thermal requirements for your PCB design before finalizing procurement.

Battery Chargers Selection Notes

Select this controller when designing cost-effective chargers for 2 to 4 series lithium-ion cells requiring high efficiency. It is suitable for applications needing adjustable charging current and low shutdown leakage. Consider the 16-pin QSOP package constraints and the requirement for an external P-channel MOSFET. Evaluate the 300kHz switching frequency against EMI requirements for portable devices.

Battery Chargers Part Context

The MAX1873 belongs to Maxim Integrated's family of switch-mode battery charger controllers. It simplifies the design of Li-ion chargers by integrating control logic while relying on external power switches. This approach reduces component count and cost compared to linear regulators, making it ideal for portable electronics where efficiency and thermal management are critical.

Battery Chargers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for direct replacements or pin-compatible alternatives within the MAX187x series.