The proprietary thermal regulation automatically adjusts the charging current to avoid excessive power dissipation and to limit PCB temperature during constant-current, constant-voltage (CC-CV) charging. This minimizes charge time without degrading reliability. The thermally enhanced, 16-pin QFN package (5 mm × 5 mm) enables charge current up to 1.4A.
To provide complete flexibility, the MAX1501 charges both lithium-ion (Li+) and NiMH batteries and regulates the output voltage in a no-battery condition. This flexible charging control allows users to program the fast-charge current up to 1.4A, the top-off current, and the safety timer (3 hr, 4.5 hr, or 6 hr) for cell phones, PDAs, and digital still cameras.
The MAX1501 accepts a 4.5V to 13V input voltage range, but disables charging when the input voltage exceeds 6.5V to prevent excessive power dissipation. Other features include a charge-current monitor, charging status indicators for LED or logic, and auto-restart when the battery voltage falls below 4V.
For more information, visit www.maxim-ic.com.
