100V Micropower Voltage Monitors Provide 1.4% Measurement Accuracy for High Voltage Designs

News Release  www.linear.com
100V Micropower Voltage Monitors Provide 1.4% Measurement
Accuracy for High Voltage Designs
MILPITAS, CA – March 25, 2015 – Linear Technology Corporation introduces the LTC2965 and
LTC2966, 3.5V to 100V, single and dual channel voltage monitors that draw only 6µA of
quiescent current. Alternative voltage monitoring solutions typically call for a low power
comparator, a high input voltage LDO to power the comparator and a high value resistive divider
to level translate the monitored rail, all of which increase board space and power consumption,
and decrease monitoring accuracy. The LTC2965/LTC2966 avoid the major pitfalls of a discrete
solution by integrating all components required to directly interface with high voltage rails in
space-efficient 3mm x 3mm packages. Each device includes resistor-programmable threshold
inputs to facilitate simple undervoltage, overvoltage or window monitoring of positive or
negative rails to within ±1.4% accuracy over temperature.
In addition to the high voltage inputs, the LTC2965/LTC2966 include adjustable-polarity
UV/OV comparator outputs that can be pulled up to voltages as high as 100V. All high voltage
pins are rated to 140V, withstanding high voltage transients without damage. Integrated high
value resistive dividers with selectable ratios offer improved accuracy, power savings and
flexibility compared to solutions using external high value resistors. Threshold programming is
achieved using low value discrete resistors in combination with configuration pins for scaling the
comparator thresholds and setting output polarity. A built-in buffered reference provides
convenient low voltage biasing for the external resistive dividers. High and low threshold input
100V Micropower Voltage Monitors Provide 1.4% Measurement
Accuracy for High Voltage Designs
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pins provide for a flexible and wide hysteresis range by simply setting a different voltage on each
pin. If the hysteresis value is not critical, one of the inputs can be grounded to select an internal
default hysteresis voltage. The small size, wide operating range and low power consumption of
the LTC2965/LTC2966 are ideal for a wide variety of applications, including battery-powered
equipment, telecom systems and automotive and industrial electronics.
The LTC2965 and LTC2966 are available today in commercial, industrial and automotive
versions, with operating temperature ranges from 0°C to 70°C, –40°C to 85°C, and
–40°C to 125°C, respectively. The LTC2965 is offered in an 8-pin 3mm x 3mm DFN or MSOP16 package and the LTC2966 is offered in a 16-pin 3mm x 3mm QFN or 20-lead SO package.
Pricing starts at $2.44 (LTC2966) and $1.98 (LTC2965) each, respectively in 1,000 piece
quantities. For more information, visit www.linear.com/product/LTC2966.
Photo Caption: Compact 2-Supply Monitor with Wide Operating Range
Summary of Features: LTC2965-66
Wide Operating Range: 3.5V to 100V
Quiescent Current: 6µA Typical
Adjustable Hysteresis & Threshold Range
Internal High Value Resistive Dividers
Single Channel (LTC2965) or Dual Channel (LTC2966)
Voltage Monitor
Polarity Selection
High Voltage Rated Outputs
Adjustable or Built-In Hysteresis
The USA list pricing shown is for budgetary use only. International prices may differ due to local
duties, taxes, fees and exchange rates.
100V Micropower Voltage Monitors Provide 1.4% Measurement
Accuracy for High Voltage Designs
page 3
About Linear Technology Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for over three decades. The Company’s products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and interface ICs, µModule® subsystems, and wireless sensor network products. For more information, visit www.linear.com
, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks and Hot Swap is a
trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
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John Hamburger, Director Marketing
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Tel: 408-432-1900 ext 2419
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Tel: 408-432-1900 ext 2233