TP5000 1A Li-ion / LiFePO4 Switch-Mode Battery Charger

Single Battery Charger Module

Specification	Details
Input Voltage	DC 4.5V to 9V (Recommend 5V)
Charge Voltage	3.6V (LiFePO4) or 4.2V (Li-ion)
Default Charge Current	1A (Programmable)
Switching Frequency	800 kHz
Efficiency	Up to 90%
Operating Modes	Trickle, Constant Current, Constant Voltage
Protections	Thermal Shutdown, Short Circuit, Battery Reversal

Programable Precharge Current Form 10% to 100%

Based on Tp5000 Battery Charger IC

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 93.22

(Tax included)

Barcode: 21341

Product Description

The TP5000 Charger Module is a versatile power management solution that supports multiple battery chemistries. The board features an "F" solder bridge that allows you to toggle between the 3.6V LiFePO4 charging profile and the standard 4.2V Li-ion profile. Its 800kHz switching frequency allows for the use of a small integrated inductor, keeping the module's footprint extremely compact. An onboard dual-color LED provides clear status indication: Red during the charging phase and Green (or Blue) once the battery has reached its full terminal voltage or is in standby.

Key Features

Multi-Chemistry Support: Compatible with both LiFePO4 (3.6V) and standard Lithium-ion (4.2V) cells.
High-Efficiency Buck Converter: Minimal heat dissipation even at the full 1A charging rate.
Low Standby Current: Consumes less than 1uA when no input power is connected, preventing battery drain.
Precise Voltage Regulation: Maintains a ±1% accuracy on the final float voltage for maximum battery lifespan.
Robust Protection Suite: Automatically reduces current if the chip temperature exceeds 140°C.

Technical Details

Chemistry Selection: "F" Solder Point Open = 4.2V (Li-ion); "F" Solder Point Shorted = 3.6V (LiFePO4).
Current Programming: Charging current is set via an onboard sense resistor ($R_{S}$); default is 1A.
Dimensions: 21.5mm x 14.5mm x 4.2mm.

Prototyping and Engineering Tips from Robogears

The "F" Jumper Warning: Always verify the "F" jumper setting before connecting your battery. Charging a 3.6V LiFePO4 battery with the 4.2V setting will cause permanent damage or fire, while charging a 4.2V Li-ion battery at 3.6V will result in an incomplete charge.
Input Voltage Headroom: For the most stable 1A charge, provide a clean 5V DC input. While it supports up to 9V, the efficiency is highest when the input voltage is closer to the battery voltage.
Customizing Charge Current: If you need to charge smaller capacity batteries (like 500mAh), you can replace the sense resistor. The formula is $I_{charge} = 0.1 / R_{S}$. Replacing the default resistor with a $0.2\Omega$ resistor will limit the current to 500mA.
LED Extension: The onboard LED can be desoldered, and a common-cathode dual-color LED can be wired to the pads for panel-mount applications in custom enclosures.

Package Includes

1 x TP5000 3.6V/4.2V 1A Lithium Battery Charger Module

Disclaimer

Lithium batteries are volatile if handled incorrectly. Always use a digital multimeter to confirm the output voltage at the B+ and B- terminals before connecting your battery. Ensure proper polarity as the module does not have a high-current reverse-polarity fuse.

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