Micropower, High-Input-Voltage Linear Regulators Power Notebook Computers and Other Systems
SUNNYVALE, CA-December 13, 2004-Maxim Integrated Products
(NASDAQ: MXIM) introduces the MAX8718/MAX8719, small, high-input-voltage linear regulators that supply always-on, keep-alive power to CMOS RAM, real-time clocks (RTC), and microcontrollers in systems with high-voltage batteries. The low 25µA quiescent supply current is essential for these micropower applications.
Even when subjected to fast supply-voltage changes that occur during the switchover from battery to AC-adapter input power, the MAX8718 provides a fixed 5V or 3.3V output. The MAX8719 has an adjustable 1.24V to 8V output.
In addition to their principal application in notebook computers, these devices are useful in other low-power, high-voltage applications (4V < VIN < 28V), such as smart batteries, current-control loops, telecom emergency power, and housekeeping power for off-line supplies.
The MAX8718/MAX8719 are available in a thermally enhanced, 8-pin TDFN package. These devices are screened for the -40°C to +85°C industrial temperature range. Prices start at $0.99 (1000-up, FOB USA). A pre-assembled evaluation kit (MAX8718/MAX8719EVKIT) is available upon request.
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