TP5100 Lithium Battery Charge Management IC – QFN-16 – 2A Dual/Single Cell Charger

The TP5100 Lithium Battery Charge Management IC is a high-efficiency step-down switching charger designed for single or dual lithium-ion cells (4.2V / 8.4V). Packaged in a compact QFN-16 (4×4 mm), it supports wide input voltages from 5V to 18V, making it suitable for portable devices and high-current charging applications.

This IC offers programmable charge currents from 0.1A to 2A, with integrated trickle-charge, constant-current, and constant-voltage charging phases. Its 400kHz switching frequency allows the use of smaller external components while maintaining efficient thermal performance during high-current operation. The TP5100 also integrates a built-in PMOSFET, removing the need for an external Schottky protection diode.

With advanced protection features including overcurrent, under-voltage, over-temperature, reverse battery, and short-circuit protection, the TP5100 ensures safe and reliable charging. LED charge-state indicators and battery temperature monitoring further enhance system control and user feedback.

Key Specifications:

• Part Number: TP5100

• Package: QFN-16 (4×4 mm)

• Battery Types: Single-cell 4.2V or dual-cell 8.4V Li-ion

• Input Voltage: 5V to 15V (up to 18V max)

• Programmable Charge Current: 0.1A–2A

• Max Junction Temperature: 120°C

• Charge Phases: Trickle, CC, CV

• Switching Frequency: 400kHz

• Built-in PMOSFET, no external Schottky required

• Protection: OC, UVLO, OTP, reverse battery, short circuit

• BAT short-circuit: Continuous

Package Includes:
1 x TP5100 Lithium Battery Charge Management IC

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