LTC2914 Quad UV/OV Positive/Negative Voltage Monitor Fea T Descrip T n Monitors Four Voltages Simultaneously The LTC 2914 is a quad input voltage monitor intended for n Adjustable UV and OV Trip Values monitoring multiple voltages in a variety of applications. n Guaranteed Threshold Accuracy: 1.5% of Dual inputs for each monitored voltage allow monitor- Monitored Voltage over Temperature ing four separate undervoltage (UV) conditions and four n Input Glitch Rejection separate overvoltage (OV) conditions. All monitors share n Monitors up to Two Negative Voltages a common undervoltage output and a common overvolt- n Buffered 1V Reference Output age output. The LTC2914-1 has latching capability for the n Adjustable Reset Timeout with Timeout Disable overvoltage output. The LTC2914-2 has functionality to n 62A Quiescent Current disable both the overvoltage and undervoltage outputs. n Open-Drain OV and UV Outputs Polarity selection and a buffered reference allow monitor- n Guaranteed OV and UV for V 1V CC ing up to two separate negative voltages. A three-state n Available in 16-Lead SSOP and 16-Lead input pin allows setting the polarity of two inputs without (5mm 3mm) DFN Packages requiring any external components. Glitch filtering ensures reliable reset operation without false or noisy triggering. a T The LTC2914 provides a precise, versatile, space-con- n Desktop and Notebook Computers scious, micropower solution for voltage monitoring. n Network Servers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Technology Corporation. All other trademarks are the property of their respective owners. Core, I/O Voltage Monitors Typical a T Quad UV/OV Supply Monitor,10% Tolerance, 5V, 3.3V, 2.5V, 1.8V 5V 3.3V P0WER 2.5V SUPPLIES 1.8V Input Threshold Voltage 0.1F vs Temperature 0.505 44.2k V CC 0.504 VH1 SEL 1k 27.4k 0.503 VL1 OV 0.502 VH2 SYSTEM 0.501 LTC2914-1 4.53k 1k 0.500 VL2 UV 0.499 4.53k 19.6k REF 0.498 VH3 LATCH 0.497 1k 12.4k 0.496 VL3 VH4 0.495 50 25 0 25 50 75 100 4.53k 1k TEMPERATURE (C) VL4 2914 TA01b GND TMR 4.53k 2914 TA01a C TMR 22nF TIMEOUT = 200ms 2914fc 1 For more information www.linear.com/LTC2914 THRESHOLD VOLTAGE, V (V) OUT ion pplica ions pplica ion uresLTC2914 a T e Maxi Mu M r a T (Notes 1, 2) Terminal Voltages Operating Temperature Range V (Note 3) ............................................. 0.3V to 6V LTC2914C ................................................ 0C to 70C CC OV, UV ................................................... 0.3V to 16V LTC2914I .............................................40C to 85C TMR ..........................................0.3V to (V + 0.3V) LTC2914H .......................................... 40C to 125C CC VLn, VHn, LATCH, DIS, SEL ...................0.3V to 7.5V Storage Temperature Range .................. 65C to 150C Terminal Currents Lead Temperature (Soldering, 10 sec) I ....................................................................10mA SSOP ................................................................300C VCC Reference Load Current (I ) ........................... 1mA REF I , I ...............................................................10mA UV OV p c F T TOP VIEW TOP VIEW VH1 1 16 V CC VH1 1 16 V CC VL1 2 15 TMR VL1 2 15 TMR VH2 3 14 SEL VH2 3 14 SEL VL2 4 13 LATCH/DIS VL2 4 13 LATCH/DIS 17 VH3 5 12 UV VH3 5 12 UV VL3 6 11 OV VL3 6 11 OV VH4 7 10 REF VH4 7 10 REF VL4 8 9 GND VL4 8 9 GND GN PACKAGE DHC PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD (5mm 3mm) PLASTIC DFN T = 150C, = 110C/W JMAX JA T = 150C, = 43.5C/W JMAX JA EXPOSED PAD (PIN 17) PCB GND CONNECTION OPTIONAL o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2914CDHC-1 PBF LTC2914CDHC-1 TRPBF 29141 16-Lead Plastic (5mm 3mm) DFN 0C to 70C LTC2914IDHC-1 PBF LTC2914IDHC-1 TRPBF 29141 16-Lead Plastic (5mm 3mm) DFN 40C to 85C LTC2914HDHC-1 PBF LTC2914HDHC-1 TRPBF 29141 16-Lead Plastic (5mm 3mm) DFN 40C to 125C LTC2914CDHC-2 PBF LTC2914CDHC-2 TRPBF 29142 16-Lead Plastic (5mm 3mm) DFN 0C to 70C LTC2914IDHC-2 PBF LTC2914IDHC-2 TRPBF 29142 16-Lead Plastic (5mm 3mm) DFN 40C to 85C LTC2914HDHC-2 PBF LTC2914HDHC-2 TRPBF 29142 16-Lead Plastic (5mm 3mm) DFN 40C to 125C LTC2914CGN-1 PBF LTC2914CGN-1 TRPBF 29141 16-Lead Plastic SSOP 0C to 70C LTC2914IGN-1 PBF LTC2914IGN-1 TRPBF 2914I1 16-Lead Plastic SSOP 40C to 85C LTC2914HGN-1 PBF LTC2914HGN-1 TRPBF 2914H1 16-Lead Plastic SSOP 40C to 125C 2914fc 2 For more information www.linear.com/LTC2914 ion or er ion igura on in ings bsolu