MAX8594 is a complete power management chip designed for low-cost personal digital assistants (PDAs) powered by 1 lithium-ion (Li+) battery or 3 NiMH batteries. It includes multiple regulators, outputs, and voltage monitors required for portable devices with only a few external components. The chip features three linear regulators, a boost-type DC-DC converter for LCD bias, an efficient 4MHz buck-type DC-DC converter for the core power, microprocessor reset output, and low-battery voltage shutdown function. The device is available in a thin QFN package with a height of 0.8mm.
The MAX8594 is a complete power‑management IC designed for low‑cost personal digital assistants (PDAs) powered by a single Li‑ion cell or three NiMH cells. It integrates multiple DC‑DC converters, LDOs, a reset circuit, and a battery‑voltage monitor in a 24‑pin thin QFN package.
The document lists absolute maximum ratings, detailed electrical characteristics, pin functions, and package dimensions, and describes features such as true shutdown, thermal protection, and programmable output voltages for the various regulators. This manual is written in Chinese.
| Input voltage range (IN, PV) | 3.1 V – 5.5 V |
|---|---|
| VIN complete shutdown voltage | 2.95 V – 3.05 V |
| Main regulator current limit | 550 mA – 1.2 A |
The device operates with an input voltage between 3.1 V and 5.5 V.