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LTC2906 Datasheet(PDF) 1 Page - Linear Technology |
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LTC2906 Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page LTC2906/LTC2907 1 29067f FEATURES DESCRIPTIO APPLICATIO S TYPICAL APPLICATIO s Monitors Two Inputs Simultaneously s Three Threshold Selections for 5V, 3.3V or 2.5V Supplies s Low Voltage Adjustable Input (0.5V) s Three Supply Tolerances (5%, 7.5%, 10%) s Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature s Internal VCC Auto Select s Power Supply Glitch Immunity s 200ms Reset Time Delay (LTC2906 Only) s Adjustable Reset Time Delay (LTC2907 Only) s Open Drain RST Output s Guaranteed RST for V1 ≥ 1V or VCC ≥ 1V s Low Profile (1mm) SOT-23 (ThinSOT TM) and Plastic (3mm × 2mm) DFN Packages s Desktop and Notebook Computers s Handheld Devices s Network Servers s Core, I/O Monitor Precision Dual Supply Monitors with One Pin-Selectable Threshold and One Adjustable Input The LTC ®2906/LTC2907 are dual supply monitors in- tended for systems with multiple supply voltages. The dual supply monitors have a common reset output with delay (200ms for the LTC2906 and adjustable using an external capacitor for the LTC2907). These products pro- vide a precise, space-conscious and micropower solution for supply monitoring. The LTC2906/LTC2907 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 state is guaranteed to be in the correct state for V1 and/or VCC down to 1V. The LTC2906/LTC2907 also feature one adjustable input with a nominal threshold level at 0.5V, another input with three possible input threshold levels, and three supply tolerances for possible margining. These features provide versatility for any kind of system requiring dual supply monitors. Two three-state input pins program the thresh- old and tolerance level without requiring any external components. , LTC and LT are registered trademarks of Linear Technology Corporation. V1 VCC S1 TOL VADJ TMR GND RST LTC2907 22nF 0.1 µF 0.1 µF DC/DC CONVERTER SYSTEM LOGIC 29067 TA01 0.8V 2.5V TOLERANCE = 10% 49.9k 100k Dual Supply Monitor with Adjustable Tolerance (2.5V, 0.8V) Supply Selection Programming V1 S1 5.0 V1 3.3 OPEN 2.5 GND Tolerance Programming TOLERANCE TOL 5% V1 7.5% OPEN 10% GND |
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