LINEAR Li-ION CHARGER 500MA 4.2V SOT23-5
EVVO

Bypass caps, pull-ups, strapping resistors, custom silkscreen & more
Design a Custom BoardSingle-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.
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.
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 |
BILL OF MATERIALS
PCB SPECIFICATIONS
< 0.9" (straddles breadboard)
2.54mm standard
Lead-free, reflow assembled
FR4, lead-free HASL