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LTC2914 Datasheet(PDF) 1 Page - Linear Technology |
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LTC2914 Datasheet(HTML) 1 Page - Linear Technology |
1 / 18 page LTC2914 1 2914fc For more information www.linear.com/LTC2914 Quad UV/OV Positive/Negative Voltage Monitor n Desktop and Notebook Computers n Network Servers n Core, I/O Voltage Monitors n Monitors Four Voltages Simultaneously n Adjustable UV and OV Trip Values n Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage over Temperature n Input Glitch Rejection n Monitors up to Two Negative Voltages n Buffered 1V Reference Output n Adjustable Reset Timeout with Timeout Disable n 62µA Quiescent Current n Open-Drain OV and UV Outputs n Guaranteed OV and UV for VCC ≥ 1V n Available in 16-Lead SSOP and 16-Lead (5mm × 3mm) DFN Packages Quad UV/OV Supply Monitor,10% Tolerance, 5V, 3.3V, 2.5V, 1.8V The LTC®2914 is a quad input voltage monitor intended for monitoring multiple voltages in a variety of applications. Dual inputs for each monitored voltage allow monitor- ing four separate undervoltage (UV) conditions and four separate overvoltage (OV) conditions. All monitors share a common undervoltage output and a common overvolt- age output. The LTC2914-1 has latching capability for the overvoltage output. The LTC2914-2 has functionality to disable both the overvoltage and undervoltage outputs. Polarity selection and a buffered reference allow monitor- ing up to two separate negative voltages. A three-state input pin allows setting the polarity of two inputs without requiringanyexternalcomponents.Glitchfilteringensures reliable reset operation without false or noisy triggering. The LTC2914 provides a precise, versatile, space-con- scious, micropower solution for voltage monitoring. Input Threshold Voltage vs Temperature Typical applicaTion FeaTures applicaTions DescripTion VH1 VCC LTC2914-1 SYSTEM 2914 TA01a 0.1μF GND TMR VL1 VL2 VH2 REF VL3 VH3 OV UV LATCH SEL VL4 CTMR 22nF TIMEOUT = 200ms VH4 1k 4.53k 4.53k 12.4k 1k 19.6k 4.53k 27.4k 1k 44.2k 5V 3.3V 2.5V 1.8V 1k 4.53k P0WER SUPPLIES TEMPERATURE (°C) –50 0.495 0.497 0.499 0.501 –25 0 25 50 2914 TA01b 75 0.503 0.505 0.496 0.498 0.500 0.502 0.504 100 L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. |
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