TP4054

Overview

The EVVO TP4054 is a single-cell lithium-ion battery linear charging management IC designed for USB-powered portable devices. It integrates a PMOS power switch, eliminating the need for external blocking diodes or sensing resistors. The chip executes a standard three-stage charging process: trickle pre-charge for batteries below 2.9V, constant current (CC) charging, and constant voltage (CV) termination at 4.2V with ±1% accuracy. Charging current is programmable via an external resistor on the PROG pin, supporting up to 500mA. Key protections include input under-voltage lockout, reverse battery protection, thermal regulation, and low quiescent current in standby mode.

Feature Summary

• Integrates internal PMOS power switch to eliminate external blocking diodes and reduce component count
• Executes complete CC/CV charging profile with automatic transition from trickle pre-charge to full termination
• Features built-in thermal feedback to adjust charging current based on junction temperature
• Provides hardware-level protection against reverse battery connection and input under-voltage conditions

Applications

• Portable consumer electronics powered by single-cell lithium-ion or lithium-polymer batteries
• Bluetooth audio devices and wireless peripherals requiring compact charging solutions
• USB-powered mobile accessories and small form-factor electronic gadgets
• IoT devices and smart wearables with space-constrained PCB layouts

Procurement Notes

Verify the specific manufacturer datasheet for the EVVO-branded TP4054 to confirm exact electrical tolerances and thermal characteristics, as parameters may vary between foundry sources. Ensure the ordering suffix matches the required package variant, typically SOT-23-5 or SOT-23-6 depending on the specific revision. Cross-reference the PROG pin resistance formula with the official document to validate current setting capabilities for your target application.

Selection Notes

Select this component when designing for cost-sensitive, space-constrained applications requiring a simple linear charging solution without external MOSFETs. It is suitable for systems powered directly by 5V USB sources where high-efficiency switching converters are unnecessary. Consider the thermal dissipation requirements of the SOT-23 package if operating near maximum current limits, and ensure the PCB layout supports adequate heat spreading for sustained high-current operation.

Part Context

The TP4054 belongs to a widely adopted family of single-cell linear battery chargers, often cloned or adapted by various semiconductor manufacturers including Xysemi, MEI, and others. While functionally similar across brands, differences exist in packaging options, exact current limits, and additional features like temperature monitoring. The EVVO version maintains the core CC/CV architecture but should be evaluated against specific datasheet specifications for integration into new designs.

Replacement Considerations

Compatible substitutes include the XYS4054, ME4054, and TP4054H. Verify pin compatibility and package type before replacement. The TP4054H offers enhanced over-voltage protection and higher current capability, while other clones may differ in thermal performance or standby current consumption.