Linear Technology LTC2909CDDB-3.3#TRPBF
Part Number:
- LTC2909CDDB-3.3#TRPBF
Manufacturer:
- Linear Technology
Ventron No:
- 3277670-LTC2909CDDB-3.3#TRPBF
Description:
- IC MONITOR PREC 3.3V 8-DFN
Datasheet:
- LTC2909CDDB-3.3#TRPBF
Payment:
Delivery:
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Part Overview
Description
The LTC2909 is a dual input monitor designed for various system monitoring applications. It features polarity selection and a buffered reference output, allowing it to monitor positive and negative supplies for undervoltage (UV) and overvoltage (OV) conditions. The two inputs have a nominal 0.5V threshold with tight 1.5% threshold accuracy over the entire operating temperature range. Glitch filtering ensures reliable reset operation without false triggering. Additionally, a third fixed-threshold UVLO monitor on the part's Vcc (also 1.5% accuracy) is available for standard logic supplies. The common reset output has a timeout that can use a preset 200ms, be set by an external capacitor, or be disabled. A three-state input pin sets the input polarity of each adjustable input without requiring any external components.
Features
Two low voltage adjustable inputs (0.5V)
Pin selectable input polarity allows negative and OV monitoring
Guaranteed threshold accuracy: ±1.5%
6.5V shunt regulator for high voltage operation
Low 50µA quiescent current
Buffered 1V reference for negative supply offset
Input glitch rejection
Adjustable reset timeout period
Selectable internal timeout saves components
Open-drain RST output
Accurate UVLO for 2.5V, 3.3V, 5V systems
Ultralow voltage reset: Vcc = 0.5V guaranteed
Space saving 8-lead TSOT-23 and 3mm x 2mm DFN packages
Applications
Desktop and notebook computers
Handheld devices
Network servers
Core, I/O monitor
Automotive
Precision triple/dual input UV, OV, and negative voltage monitor
The LTC2909 is a dual input monitor designed for various system monitoring applications. It features polarity selection and a buffered reference output, allowing it to monitor positive and negative supplies for undervoltage (UV) and overvoltage (OV) conditions. The two inputs have a nominal 0.5V threshold with tight 1.5% threshold accuracy over the entire operating temperature range. Glitch filtering ensures reliable reset operation without false triggering. Additionally, a third fixed-threshold UVLO monitor on the part's Vcc (also 1.5% accuracy) is available for standard logic supplies. The common reset output has a timeout that can use a preset 200ms, be set by an external capacitor, or be disabled. A three-state input pin sets the input polarity of each adjustable input without requiring any external components.
Features
Two low voltage adjustable inputs (0.5V)
Pin selectable input polarity allows negative and OV monitoring
Guaranteed threshold accuracy: ±1.5%
6.5V shunt regulator for high voltage operation
Low 50µA quiescent current
Buffered 1V reference for negative supply offset
Input glitch rejection
Adjustable reset timeout period
Selectable internal timeout saves components
Open-drain RST output
Accurate UVLO for 2.5V, 3.3V, 5V systems
Ultralow voltage reset: Vcc = 0.5V guaranteed
Space saving 8-lead TSOT-23 and 3mm x 2mm DFN packages
Applications
Desktop and notebook computers
Handheld devices
Network servers
Core, I/O monitor
Automotive
Precision triple/dual input UV, OV, and negative voltage monitor
Specifications
Linear Technology LTC2909CDDB-3.3#TRPBF technical specifications, attributes, parameters and parts with similar specifications to Linear Technology LTC2909CDDB-3.3#TRPBF.
- Lifecycle StatusPRODUCTION (Last Updated: 1 week ago)
- Factory Lead Time10 Weeks
- Mounting TypeSurface Mount
- Package / Case8-WFDFN Exposed Pad
- Surface MountYES
- Number of Pins8
- Operating Temperature0°C~70°C TA
- PackagingTape & Reel (TR)
- JESD-609 Codee3
- Part StatusActive
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations8
- ECCN CodeEAR99
- Terminal FinishMatte Tin (Sn)
- SubcategoryPower Management Circuits
- TechnologyCMOS
- Terminal PositionDUAL
- Terminal FormNO LEAD
- Peak Reflow Temperature (Cel)260
- Number of Functions3
- Supply Voltage3.3V
- Terminal Pitch0.5mm
- Time@Peak Reflow Temperature-Max (s)30
- Base Part NumberLTC2909
- OutputOpen Drain or Open Collector
- Pin Count8
- Qualification StatusNot Qualified
- Number of Channels2
- Max Supply Voltage6V
- Min Supply Voltage500mV
- Adjustable ThresholdYES
- ResetActive Low
- Voltage - Threshold2.921V Adj Adj
- Number of Voltages Monitored3
- Reset TimeoutAdjustable/Selectable
- Supply Current-Max (Isup)0.15mA
- Width2mm
- RoHS StatusROHS3 Compliant
Certification
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