LTC2936 Programmable Hex Voltage Supervisor with EEPROM and Comparator Outputs Fea T Descrip T n Supervises 6 Power Supplies The LTC 2936 is an EEPROM configurable voltage super- 2 n I C Adjustable UV and OV Trip Points visor which can simultaneously monitor up to six power 2 n Guaranteed Threshold Accuracy: 1% (Maximum) supply voltage inputs. Each voltage detector offers I C 2 n I C/SMBus Interface programmable overvoltage/undervoltage thresholds in n Internal EEPROM various ranges and increments and a dedicated compara- n Six Comparator Outputs tor output. n Fast Comparator Response Time: 7.5s Two general purpose inputs (GPI) can be configured as n 256 Programmable Thresholds per Channel programmable manual reset (MR), UV disable (UVDIS), n Three Range Settings per Channel margin (MARG), Write Protect (WP) or auxiliary compara- n Two General Purpose Inputs tor (AUXC) inputs. Three general purpose pins (GPIO) n Three General Purpose Inputs/Outputs can be configured for input or output operation. When n Programmable Output Delays configured as an input, a GPIO pin can be mapped to any n Can Be Powered from 3.3V, or 3.4V to 13.9V other GPIO configured as output. The GPIO pins can also n 24-Pin 4mm 5mm QFN and SSOP Packages be configured as ALERT or fault outputs. Faults can be configured with programmable delay-on-release times. a T Output type and polarity are also configurable. n High Availability Computer Systems Status and history registers log faults and can be polled n Network Servers 2 via the I C interface. A fault snapshot is also backed up n Telecom Equipment in internal EEPROM. All parameters are programmable n Data Storage Systems 2 via the I C interface. Configuration EEPROM supports L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear autonomous operation without additional software. Technology Corporation. All other trademarks are the property of their respective owners. Patent Pending. Typical a T 12V V1 to V6 Error vs Temperature 1 5V 3.3V 2.5V DC/DC 1.8V CONVERTERS 0.5 1.5V 1.2V 0 V1 V2 V3 V4 V5 V6 SYSTEM CMP1 CMP2 OV CMP3 GPIO1 0.5 RST CMP4 GPIO2 FPGA LTC2936 ALERT CMP5 GPIO3 CMP6 UVDIS 1 GPI1 SDA MARG 50 25 0 25 50 75 100 GPI2 SCL V V PWR DD33 GND ASEL1 ASEL0 TEMPERATURE (C) 2936 TA01a 2936 TA01b 0.1F 0.1F 2936fa 1 For more information www.linear.com/LTC2936 THRESHOLD ERROR (%) ion pplica ions pplica ion uresLTC2936 a Te Maxi Mu M r a T (Notes 1, 2) Supply Voltages Operating Temperature Range V .......................................................0.3V to 14V LTC2936C ................................................ 0C to 70C PWR V .................................................... 0.3V to 3.6V LTC2936I .............................................40C to 85C DD33 Digital Input/Output Voltages Storage Temperature Range ................ 65C to 150C* SDA, SCL, GPI1, GPI2 .............................. 0.3V to 6V Maximum Junction Temperature ........................ 125C* GPIO1-GPIO3, CMP1-CMP6 ....................0.3V to 14V Lead Temperature Range (Soldering, 10 sec) ASEL0, ASEL1 .....................................0.3V to V SSOP Package ..................................................300C DD33 Analog Voltages * See Applications Information section for detailed EEPROM derating V1-V6 ....................................................... 0.3V to 6V information for junction temperatures in excess of 85C. p in c F T TOP VIEW TOP VIEW 1 24 V4 V3 24 23 22 21 20 2 23 V5 V2 V1 1 19 GPI1 3 22 V6 V1 V 2 18 GPI2 PWR 4 21 GPI1 V PWR V 3 17 SCL DD33 5 20 GPI2 V DD33 25 GND 4 16 SDA 6 19 SCL GND GPIO3 5 15 GPIO1 7 18 SDA GPIO3 ASEL0 6 14 GPIO2 8 17 GPIO1 ASEL0 ASEL1 7 13 CMP5 8 9 10 11 12 9 16 GPIO2 ASEL1 10 15 CMP5 CMP4 11 14 CMP6 CMP3 12 13 CMP1 UFD PACKAGE CMP2 24-LEAD (4mm 5mm) PLASTIC QFN GN PACKAGE = 125C, = 43C/W, = 3.4C/W T JMAX JA JCbottom 24-LEAD PLASTIC SSOP EXPOSED PAD (PIN 25) IS GND T = 125C, = 88C/W, = 30C/W JMAX JA JCtop PCB CONNECTION IS OPTIONAL