Maxim Integrated MAX77751FEFG+ battery charger IC, Li-Ion 1-cell, USB interface, constant-programmable current up to 3.15A, 24-PowerUFQFN package, surface mount, -40°C to 85°C, active lifecycle.
| Parameter | Value |
|---|---|
| Mounting type | Surface Mount |
| Battery pack voltage | 4.2V |
| Voltage | 13.7V |
| Current - charging | Constant - Programmable |
| Charge current - max | 3.15A |
| Interface | USB |
| Operating temperature | -40°C ~ 85°C |
| Package | Tray |
| Case | 24-PowerUFQFN |
| Number of cells | 1 |
| Fault protection | Over Current, Over Temperature, Over Voltage, Reverse Battery, Short Circuit |
| Battery chemistry | Lithium Ion |
| Programmable features | Current |
Housed in a 24-PowerUFQFN with an exposed pad (3x3 mm), the MAX77751FEFG+ relies on the PCB copper pour and via stitching under the package to dissipate heat from the 3.15A charge pass element. Surface-mount assembly is standard, but the thermal pad must be soldered to a ground plane.
The device is ROHS3 compliant, meeting the material restriction directive for solder joints and lead-free assembly.
The maximum charge current is 3.15A, programmable via the current-set pin or register. This is the peak rating — the actual charge current in a design may be limited by thermal constraints of the 24-PowerUFQFN package and PCB copper area.
Yes, the device includes a USB interface, making it suitable for charging from a USB port or adapter. The input supply range extends to 13.7V, covering standard USB and higher-voltage adapters.
The MAX77751FEFG+ and MAX77751FEFG+T share the same die and specifications — the difference is the shipping medium. The + suffix denotes tray packaging; the +T suffix denotes tape-and-reel. They are electrically identical and pin-compatible.