Sunnyvale, Calif.—Maxim's MAX8660 and MAX8661's power-management ICs, designed specifically for the Intel Monahan processors, are suited to smart cellular phones, PDAs, portable media players, GPS navigators, and other devices requiring substantial computing and multimedia capability at low power.
"The MAX8660 is the third generation of our highly integrated power-management products developed for Intel XScale processors," said Chris Neil, group vice president. "To achieve higher integration and longer battery life in a smaller package, we also made many improvements compared to our MAX1586/MAX1587
The MAX8660 integrates 4 step-down DC/DC and 4 LDOs, an I2C interface, and supervisory functions in a lead-free, 5-by-5 mm, 40-pin TQFN package. Fully compatible with the Monahans power I2C register set, the device meets all Monahans' processor voltage thresholds and power sequencing and ramp rate requirements.
Two of the MAX8660's are serially programmed for dynamic voltage management to power the CPU (1.6 amps) and internal SRAM (400 mA). The remaining DC/DC converters supply I/O (1.2 amps) and DRAM (900 mA), and can achieve up to 97 percent efficiency. A 200-mA LDO supplies the processor's low-noise circuitry; two general-purpose 500-mA LDOs support SD-CARD interfaces. A fourth always-on LDO supplies the Monahans' internal RTC and draws only 20 microamps in deep-sleep mode.
The MAX8660 features overvoltage and undervoltage lock-out protection for highly reliable operation. Its
2.6- to 6-V input-voltage range allows use of a 1-cell lithium-ion (Li+), 3- or 4-cell NiMH, or a regulated 5-volt source. The MAX8660 and MAX8661 (three DC/DCs, three LDOs) are screened for the -40 to +85°C temperature range. Evaluation kits and samples are currently available to speed designs.
Click here for the preliminary datasheet. The MAX8660 is $4.50 each, and the MAX8661 is $3.90, both in 1000-up quantities.
Maxim Integrated Products, 1-800-998-8800, www.maxim-ic.com