LTC2933 Datasheet | Linear Technology

FEATURES n Supervises 6 Power Supplies n I2C Adjustable UV and OV Trip Points n Guaranteed Threshold Accuracy: ±1% n I2C/SMBus Interface n Internal EEPROM n256 Programmable Thresholds per Channel n Up to Three Range Settings per Channel n Two General Purpose Inputs n Three General Purpose Inputs/Outputs n Programmable Output Delays n Supply Voltage Range, 3.4V to 13.9V n Supply Voltage Power Sharing from V1 to V4 n16-Lead 5mm × 4mm DFN and SSOP Packages APPLICATIONS n High Availability puter Systems n Network Servers n Tele Equipment n Data Storage 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. DESCRIPTION The LTC®2933 is an EEPROM configurable voltage supervisor which can simultaneously monitor up to six power supply voltage inputs. Each voltage detector offers programmable over/undervoltage thresholds in various ranges and increments. Two general purpose inputs (GPI) can be configured as programmable manual reset (MR), UV disable (UVDIS), margin (MARG) or auxiliary parator (AUXC) inputs. Three general purpose pins (GPIO) can be configured for input or output operation. When configured as an input, a GPIO pin can be mapped to any other GPIO configured as output. The GPIO pins can also be configured as ALERT or fault outputs. Faults can be configured with programmable delay-on-release times. Output type and polarity are also configurable. Status and history registers log faults and can be polled via the I2C interface. A fault log snapshot is also backed up in internal EEPROM. All parameters are programmable via the I2C interface. Configuration EEPROM supports autonomous operation without additional software. TYPICAL APPLICATION Precision Multiple Power Supply Supervisor 100n F 220n F 12V 5V DC/DC CONVERTERS 3.3V 2.5V 1.8V 1.5V VDD33 MR GPI1 GPI2 V1 V2 V3 V4 V5 V6 GPIO1 GPIO2 GPIO3 GND ASEL...