LTC2912 Datasheet | Linear Technology

Features n Monitors Single Voltage n Adjustable UV and OV Trip Values n Guaranteed Threshold Accuracy: ±1.5% n Power Supply Glitch Immunity n Adjustable Reset Timeout with Timeout Disable n29µA Quiescent Current n Open-Drain OV and UV Outputs n Guaranteed OV and UV for VCC ≥ 1V n Available in 8-Lead Thin SOTTM and (3mm × 2mm) DFN Packages APPLICATIONS n Desktop and Notebook puters n Network Servers n Core, I/O Voltage Monitors LTC2912 Single UV/OV Voltage Monitor DESCRIPTION The LTC®2912 voltage monitor is designed to detect power supply undervoltage and overvoltage events. The VL and VH monitor inputs include filtering to reject brief glitches, thereby ensuring reliable reset operation without false or noisy triggering. An adjustable timer defines the duration of the overvoltage and undervoltage reset outputs which function independently. While the LTC2912 operates directly from 2.3V to 6V supplies, an internal VCC shunt regulator coupled with low supply current demand allows operation from higher voltages such as 12V, 24V or 48V. Three output configurations are available: the LTC2912‑1 has a latch control for the OV output; the LTC2912-2 has an OV and UV output disable feature for margining applications; the LTC2912-3 is identical to the LTC2912-1 but with a noninverting, OV output. The LTC2912 provides a precise, versatile, space-conscious micropower solution for voltage monitoring. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Thin SOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Single OV/UV Supply Monitor, 3.3V ±10% Tolerance POWER 3.3V SUPPLY 0.1µF 27.4k 1k 4.53k VCC VH OV LTC2912-1 VL UV SYSTEM LATCH TMR 2912 TA01a 22n F TIMEOUT = 200ms UV/OV TIMEOUT PERIOD, t UOTO (ms) Reset Time-Out Period vs Capacitance 1 0.1 1 10 100 1000 TMR PIN CAPACITANCE, CTMR (n F) 2912 G08 For more...