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Part Number: LTC2904
Description: The LTC®2904/LTC2905 are dual supply monitors intended for systems with two supply voltages. The dual supply monito...
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LTC2904
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DataSheet
General Description
LTC2904 General Description
The LTC®2904/LTC2905 are dual supply monitors intended for systems with two supply voltages. The dual supply monitors have a common reset output with delay (200ms for the LTC2904 and adjustable using an external capacitor for the LTC2905). This product provides a precise, space-conscious and micropower solution for supply monitoring.
The LTC2904/LTC2905 feature a tight 1.5% threshold accuracy over the whole operating temperature range, and glitch immunity to ensure reliable reset operation without false triggering. The open drain RST output is guaranteed to be in the correct state for inputs down to 1V.
The LTC2904/LTC2905 also feature three programming input pins, which program the threshold and tolerance level without requiring any external components. These three programming pins provide a total of 27 different voltage level and tolerance combinations, eliminating the need to have different parts for development and implementation of different systems with different voltage levels requiring monitoring function.
LTC2904 Maximum Ratings
Terminal Voltages
V1, V2 ..................................................... 0.3V to 7V
S1, S2, TOL .............................. 0.3V to (VCC +0.3V)
RST ......................................................... 0.3V to 7V
RST (LTC2904) ....................................... 0.3V to 7V
TMR (LTC2905) ...................................... 0.3V to 7V
Operating Temperature Range
LTC2904C/LTC2905C .......................... 0°C to 70°C
LTC2904I/LTC2905I ........................40°C to 85°C
Storage Temperature Range .........65°C to 150°C
Lead Temperature (Soldering, 10 sec)............ 300°C
V1, V2 ..................................................... 0.3V to 7V
S1, S2, TOL .............................. 0.3V to (VCC +0.3V)
RST ......................................................... 0.3V to 7V
RST (LTC2904) ....................................... 0.3V to 7V
TMR (LTC2905) ...................................... 0.3V to 7V
Operating Temperature Range
LTC2904C/LTC2905C .......................... 0°C to 70°C
LTC2904I/LTC2905I ........................40°C to 85°C
Storage Temperature Range .........65°C to 150°C
Lead Temperature (Soldering, 10 sec)............ 300°C
LTC2904 Features
Monitors Two Inputs Simultaneously
Nine Threshold Combinations
Three Supply Tolerances (5%, 7.5%, 10%)
Guaranteed Threshold Accuracy: ±1.5% of
Monitored Voltage Over Temperature
Internal VCC Auto Select
Power Supply Glitch Immunity
200ms Reset Time Delay (LTC2904 Only)
Adjustable Reset Time Delay (LTC2905 Only)
Open Drain RST Output
Guaranteed RST for V1 1V or V2 1V
Low Profile (1mm) SOT-23 (ThinSOTTM) and Plastic
(3mm x 2mm) DFN Packages
Nine Threshold Combinations
Three Supply Tolerances (5%, 7.5%, 10%)
Guaranteed Threshold Accuracy: ±1.5% of
Monitored Voltage Over Temperature
Internal VCC Auto Select
Power Supply Glitch Immunity
200ms Reset Time Delay (LTC2904 Only)
Adjustable Reset Time Delay (LTC2905 Only)
Open Drain RST Output
Guaranteed RST for V1 1V or V2 1V
Low Profile (1mm) SOT-23 (ThinSOTTM) and Plastic
(3mm x 2mm) DFN Packages
LTC2904 Typical Application
Desktop and Notebook Computers
Handheld Devices
Network Servers
Core, I/O Monitor
Handheld Devices
Network Servers
Core, I/O Monitor
LTC2904 Connection Diagram
LTC2904
PDF/DataSheet Download
- Datasheet: LTC2904
- File Size: 179149 KB
- Manufacturer: Linear
- Click here to Download
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