MCP73842-840I/UN

Overview

The MCP73842-840I/UN is a charge management controller designed for single or dual cell lithium-ion and lithium polymer battery packs. It provides an output voltage of 8.4 V with a maximum output current of 10 mA. The device operates within a supply voltage range of 4.5 V to 12 V. It is housed in a 10-pin MSOP package and supports surface mount installation. The component includes charging safety timers and temperature monitoring functions.

Feature Summary

• Integrated charging safety timer for enhanced protection
• Temperature monitoring capability for thermal safety
• Supports single or dual cell lithium-ion/polymer configurations

Applications

• Portable electronic devices requiring dual-cell battery charging
• Industrial equipment with lithium-ion power systems
• Medical devices utilizing protected battery packs

Procurement Notes

Verify the specific suffix '840' confirms the 8.4V output configuration, as other suffixes may indicate different voltages. Confirm the '/UN' designation corresponds to the MSOP-10 package type. Check manufacturer status as this part may be subject to obsolescence notices. Ensure compatibility with existing PCB footprints for the 10-pin MSOP form factor before procurement.

Selection Notes

Select this component when designing circuits for dual-cell lithium batteries requiring precise 8.4V termination. Consider the 10mA output limit suitable for low-current applications. Evaluate the MSOP-10 package constraints against board space requirements. Verify that the input voltage range of 4.5V to 12V aligns with the system power source capabilities.

Part Context

This part belongs to the MCP7384x family of battery chargers from Microchip Technology. It shares functional similarities with other variants like the MCP73842-420I/UN but differs in output voltage specification. The family is characterized by integrated safety features and compact packaging options for portable electronics.

Replacement Considerations

MCP73842T-840I/UN is a tape-and-reel variant of the same electrical specification. MCP73842-420I/UN offers identical functionality but with a 4.2V output for single-cell applications.