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TP4054
LINEAR Li-ION CHARGER 500MA 4.2V SOT23-5
EVVO
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Design a Custom BoardAbout This Component
Single-chip linear battery management IC for lithium-ion charging from USB supplies. Provides constant current/constant voltage charging to 4.2V with programmable current up to 500mA, requiring no external MOSFET or blocking diode. Features thermal regulation, reverse polarity protection, trickle charging, and automatic charge termination at 1/10 charging current. Typical applications include mobile phones, PDAs, and Bluetooth devices.
Package: SOT-23-5 · 5 pins
Why does this need a breakout?
This 0.95 mm pitch SMD package is incompatible with breadboards and difficult to hand-solder. A breakout board brings the five pins to standard 0.1″ spacing, enabling rapid prototyping without reflow equipment. Essential for evaluating precision analog ICs like current-sense amplifiers in development circuits.
Specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | EVVO |
| Part Number | TP4054 |
| Package | SOT-23-5 |
| Pin Count | 5 |
| Battery Chemistry | Lithium Ion |
| Charge Current - Max | 500mA |
| Interface | USB |
| Number of Cells | 1 |
| Voltage - Supply (Max) | 6.5V |
What's Included
BILL OF MATERIALS
- 1x TP4054 soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS
WIDTH
< 0.9" (straddles breadboard)
PITCH
2.54mm standard
SOLDER
Lead-free, reflow assembled
FINISH
FR4, lead-free HASL