LTC2902-1CGNIC SUPERVISOR 4 CHANNEL
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ModelLTC2902-1CGN
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BrandAnalog Devices
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Dc22+
* Prices may fluctuate, please ask factory personnel for details.
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- Product Information
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| Model | LTC2902-1CGN |
| Pack | SSOP-16 |
| Brand | Analog Devices |
| Dc | 22+ |
FEATURES
Simultaneously Monitors Four Supplies 16 User Selectable Combinations of 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V and/or Adjustable Voltage Thresholds
Guaranteed Threshold Accuracy: 1.5% of Monitored Voltage Over Temperature
Selectable Supply Tolerance: 5%, 7.5%, 10%, 12.5% Below Monitored Voltage
Low Supply Current: 43uA Typ Adjustable Reset Time
RESET Disable Pin for Margining Applications
Open-Drain RST Output (LTC2902-1)
Push-Pull RST Output (LTC2902-2)
Individual Nondelayed Monitor Outputs for Each Supply
Power Supply Glitch Immunity
Guaranteed RESET for Vcc 2 1V
APPLICATIONS
Desktop and Notebook Computers
Multivoltage Systems
Telecom Equipment
Portable Battery-Powered Equipment
Network Servers
DESCRIPTION
The LTC 2902 is a programmable supply monitor for sys- tems with up to four supply voltages. One of 16 preset or adjustable voltage monitor combinations can be selected using an external resistor divider connected to the pro- gram pin. The preset voltage thresholds are digitally pro- grammable to 5%, 7.5%, 10% or 12.5% below the nomi- nal operating voltage, and are accurate to 1.5% over tem- perature. All four voltage comparator outputs are con- nected to separate pins for individual s upply monitoring.
The reset delay time is adjustable using an external capacitor. Tight voltage threshold accuracy and glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for Vcc down to 1V and may be disabled during supply margin testing. The LT C2902-1 features an open-drain RST output, while the LTC2902-2 has a push-pull RST output.
The 43uAsupply current makes the LTC2902ideal for power conscious systems and the part may be configured to monitor less than four inputs. The LTC2902-1/LTC2902-2 are available in the 16-lead narrow SSOP package.
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