Programmable Hex Voltage Supervisor Has 1% Threshold Accuracy & Built-In EEPROM
Each channel of the LTC2933 can be programmed to one of 256 available overvoltage (OV) and undervoltage (UV) fault or warning thresholds, which can be disabled for margining purposes. This highly configurable device offers two general purpose inputs (GPIs) that can be configured as manual reset, UV disable, margin enable, or auxiliary comparator inputs. In addition, three general purpose inputs/outputs (GPIOs) can be mapped to respond to any combination of these user-defined inputs, power supply faults, as /ALERT outputs per the SMBus standard, or as interrupts to provide maximum design flexibility. The output type (open-drain or weak pull-up), polarity, and delay-on-release response time can be individually selected for all GPIO pins. A well-regulated 3.3V output can be used to monitor negative supplies. Three pin-selectable I²C addresses are also available.
The LTC2933 is designed to increase system reliability in applications including network servers, data storage, telecommunications equipment, industrial control, and high availability computer systems. The LTC2933 uses an EEPROM to store configuration data that has been tested over temperature and guarantees at least 10 years of data retention.
The LTC2933 is available today in commercial and industrial versions, supporting operating temperature ranges from 0°C to 70°C and -40°C to 85°C, respectively. The device is offered in a small RoHS-compliant 16-pin 5mm x 4mm DFN or narrow 16-lead SSOP package. Pricing starts at $4.85 each in 1,000 piece quantities. For more information, visit www.linear.com/product/LTC2933.
Summary of Features: LTC2933
Supervises 6 Power Supplies
I²C Adjustable UV & OV Trip Points
Guaranteed Threshold Accuracy: ±1%
256 Programmable Thresholds per Channel
Up to Three Range Settings per Channel
Two General Purpose Inputs
Three General Purpose Inputs/Outputs
Programmable Output Delays
Supply Voltage Range, 3.4V to 13.9V
Supply Voltage Power Sharing from V1 to V4
5mm x 4mm 16-Pin DFN & Narrow SSOP-16 Packages
LINEAR TECHNOLOGY GmbH
Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for over three decades. The Company's products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and interface ICs, µModule® subsystems, and wireless sensor network products. For more information, visit www.linear.com.