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Voltage supervisers cater for low voltage architectures

The Power by Linear devices, the LTC2962, LTC2963 and LTC2964 family of voltage supervisers are designed for ASICs, FPGAs, DSPs and low voltage microcontrollers and microprocessors, operating down to 1.0V, which cannot use traditional one to 2% accurate voltage supervisors without shedding system voltage margin and shrinking the remaining load operating voltage range. 

 

The LTC2962 family is claimed to have a best-in-class ±0.5% reset threshold accuracy, which increases system tolerance to transients and enables a lower nominal supply to dramatically reduce power consumption.  For network, telecomms and automotive requirements, the family has high accuracy, flexible one to 5.0V (or adjustable) reset thresholds and a wide operating temperature range, says the company.

 

The family is also suitable for many multi-rail applications. For each channel, one of 16 preset or adjustable, ±0.5% accurate, voltage thresholds can be selected for under-voltage, over-voltage or negative monitoring. The supervisory circuits monitor inputs and drive the outputs according to the configured thresholds. Alternatively, a manual reset input is also available for optional use of a pushbutton switch to force a system reset. Options include a watchdog with adjustable timers (LTC2963-1) and individual comparator open-drain outputs for each channel (LTC2964).  An adjustable timeout period is available on all devices. 

 

The devices are available now in multiple temperature grades: 0 to 70°C (C grade), -40 to 85°C (I grade), and -40°C to 125°C (H grade). 

 

The LTC2962 is available in a 16-lead 3.0 x 3.0mm QFN, and the LTC2963-1 and LTC2964 are available in a 20-lead 3.0 x 4.0mm QFN.

 



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