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Product attributes Property Value
Manufacturer Monolithic Power Systems Inc.
Product Series
Packaging Cut Tape (CT) | Tape & Reel (TR)
Battery Chemistry Lithium Ion/Polymer
Number of Cells 1
Current - Charging Constant - Programmable
Programmable Features Current, Timer, Voltage
Fault Protection Over Current, Over Temperature, Over Voltage, Short Circuit
Charge Current - Max 5A
Battery Pack Voltage 4.35V
Voltage - Supply (Max) 16V
Interface -
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 26-PowerVFQFN
Supplier Device Package 26-QFN (4x4)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MP2639BGR-P from Monolithic Power Systems is a high-current switching battery charger for single-cell Lithium Ion/Polymer batteries. It delivers up to 5A charge current with a 4.35V regulation voltage. The device integrates comprehensive protection including over-current, over-temperature, over-voltage, and short-circuit safeguards. Housed in a 26-PowerVFQFN package, it operates over a -40°C to 125°C junction temperature range, making it suitable for high-performance portable and industrial applications.

  • 5A charge current enables ultra-fast charging for high-capacity single-cell batteries.
  • Comprehensive protection (over-current, over-temperature, over-voltage, short-circuit) ensures maximum safety.
  • Wide -40°C to 125°C junction temperature range supports harsh industrial environments.
  • 26-PowerVFQFN package offers excellent thermal performance for high-current operation.

High-Capacity Power Banks

The 5A charge current dramatically reduces charging time for large single-cell Li-Polymer batteries used in high-capacity power banks, ideal for fast consumer recharging.

Drones and UAVs

With a 4.35V high-voltage cell and robust protection suite, this charger is suited for drone batteries that demand rapid charging and safety against overcurrent and short circuits.

Portable Power Tools

For compact cordless screwdrivers and small power tools, the 5A capability and -40°C to 125°C junction temperature range support demanding workshop conditions.

Automotive Dash Cameras

In vehicles with extreme interior temperatures, the wide temperature range and over-voltage protection ensure reliable charging of backup Li-Ion batteries.

Industrial Handheld Scanners

Warehouse scanners with high-throughput usage benefit from fast 5A charging and comprehensive fault protection, minimizing downtime.

Q: What battery chemistry does the MP2639BGR support?
A: It is designed for Lithium Ion/Polymer batteries.
Q: How many cells can it charge?
A: It supports a single cell (1 cell).
Q: What is the maximum charge current?
A: The maximum charge current is 5A.
Q: What is the battery voltage regulation?
A: The battery voltage is regulated at 4.35V.
Q: What fault protections are included?
A: It includes Over Current, Over Temperature, Over Voltage, and Short Circuit protection.
Q: What is the package type?
A: It comes in a 26-PowerVFQFN package.
Base Product Number : MP2639BGR
26-PowerVFQFN 4.35V 5A Battery Charger Lithium Ion/Polymer Switching Charger
Q: What battery chemistry does the MP2639BGR support?
A: It is designed for Lithium Ion/Polymer batteries.
Q: How many cells can it charge?
A: It supports a single cell (1 cell).
Q: What is the maximum charge current?
A: The maximum charge current is 5A.
Q: What is the battery voltage regulation?
A: The battery voltage is regulated at 4.35V.
Q: What fault protections are included?
A: It includes Over Current, Over Temperature, Over Voltage, and Short Circuit protection.
Q: What is the package type?
A: It comes in a 26-PowerVFQFN package.