Precision Triple Supply Supervisor Provides Early Power-Fail Detection

The LTC2911 is suitable for a wide variety of applications, including network servers, desktop or notebook computers, and automotive or industrial electronics. The first channel monitors 3.3V, the second channel monitors pre-set values between 1.2V to 5V and the third channel is adjustable down to 0.5V. This versatility allows the LTC2911 to be conveniently ported to similar designs with differing supply voltages. Glitch filtering ensures reliable reset operation by minimizing false triggers. The reset timeout period can be selected internally (200ms) to minimize component count, or externally adjusted. The same reset timer pin can also be used to latch the reset pin status and override reset operation, which is useful in margining applications, where it is common to test systems at supply voltages that might otherwise cause the system to reset.

The LTC2911 is available in a variety of voltage options, depending on which three voltages need to be monitored. Commercial and industrial versions offer different operating temperature ranges, from 0°C to 70°C and -40°C to 85°C, respectively. The LTC2911 is available today and offered in 8-lead TSOT-23 and 3mm x 2mm DFN packages. Pricing starts at $1.52 each in 1,000 piece quantities. Please visit www.linear.com/2911 for more product selection and information.