The MAX8814 is an intelligent, stand-alone constant-current, constant-voltage (CCCV) thermally regulated linear charger designed for charging a single-cell lithium-ion (Li+) battery. The IC integrates the current- sense circuit, MOSFET pass element, thermal- regulation circuitry, and eliminates the reverse-blocking Schottky diode to create the simplest and smallest charging solution for handheld equipment.
The MAX8814 intelligent, stand‑alone linear charger provides constant‑current/constant‑voltage (CCCV) charging for a single‑cell Li+ battery. It integrates the current‑sense circuit, MOSFET pass element, thermal‑regulation loop and an autoboot assistant, eliminating the need for external MOSFETs or reverse‑blocking diodes.
Typical applications include cellular phones, smartphones, MP3 players, digital cameras, USB appliances and charging docks. The device operates from 4.25 V to 28 V input, disables charging above 7 V, and works over –40 °C to +85 °C.
| Input Voltage Range | 4.25 V to 28 V |
|---|---|
| Charging Disabled Above | 7 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 8‑pin TDFN 2 mm × 2 mm (0.8 mm height) |
It operates from 4.25 V up to 28 V, but charging is disabled when the input exceeds 7 V.
The fast‑charge current is set by connecting a resistor from the ISET pin to ground; the current equals 1596 V divided by the resistor value.