www.DataSheet4U.com
19-0732; Rev 0; 2/07
Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices
General Des...
www.DataSheet4U.com
19-0732; Rev 0; 2/07
Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices
General Description
The MAX8662/MAX8663 power-management ICs (PMICs) are efficient, compact devices suitable for smart cellular phones, PDAs, Internet appliances, and other portable devices. They integrate two synchronous buck
regulators, a boost
regulator driving two to seven white LEDs, four low-dropout linear
regulators (LDOs), and a linear charger for a single-cell Li-ion (Li+) battery. Maxim’s Smart Power Selector™ (SPS) safely distributes power between an external power source (AC adapter, auto adapter, or USB source), battery, and the system load. When system load peaks exceed the external source capability, the battery supplies supplemental current. When system load requirements are small, residual power from the external power source charges the battery. A thermal-limiting circuit limits battery-charge rate and external power-source current to prevent overheating. The PMIC also allows the system to operate with no battery or a discharged battery. The MAX8662 is available in a 6mm x 6mm, 48-pin thin QFN package, while the MAX8663, without the LED driver, is available in a 5mm x 5mm, 40-pin thin QFN package.
Features
♦ Two 95%-Efficient 1MHz Buck
Regulators Main
Regulator: 0.98V to VIN at 1200mA Core
Regulator: 0.98V to VIN at 900mA ♦ 1MHz Boost WLED Driver Drives Up to 7 White LEDs at 30mA (max) PWM and Analog Dimming Control ♦ Four Low-Dropout Linear Regulato...