Overview
The LTC2918IMS-A1#PBF is a low-voltage single-supply monitor produced by Analog Devices Inc. This integrated circuit is designed to provide reliable supply monitoring and reset functionality. It features selectable thresholds and an adjustable watchdog timer, making it versatile for various applications requiring precise voltage monitoring.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 1.5 | 5.5 | V | ||
| Operating Temperature Range | –40 | 85 | °C | ||
| Threshold Accuracy | Over entire operating temperature range | ±1.5% | % | ||
| Reset Timeout Period (Internal) | VRT = VCC | 150 | 200 | 260 | ms |
| Quiescent Supply Current (ICC) | VCC = 2.5V, SEL1 = 0V, SEL2 = 2.5V, TOL = OPEN | 20 | 30 | 40 | μA |
| Reset Output (RST) | Active Low/Open Drain | ||||
| Package Type | 10-Lead Plastic MSOP |
Key Features
- Selectable thresholds: The LTC2918IMS-A1#PBF allows selection of one of nine internally programmed thresholds using two three-state inputs.
- Adjustable watchdog timer: The reset timeout period can be configured using one of two internal timers without the need for external components.
- Precision voltage monitoring: The device ensures threshold accuracy of ±1.5% over the entire operating temperature range.
- Low quiescent supply current: The IC has a low quiescent supply current, making it energy-efficient.
- Active Low/Open Drain reset output: The reset output is configurable as either active low or open drain.
Applications
The LTC2918IMS-A1#PBF is suitable for various applications that require reliable supply monitoring and reset functionality. These include:
- Embedded systems: Ensures proper system startup and operation by monitoring the supply voltage and asserting a reset if the voltage falls below the set threshold.
- Industrial control systems: Provides robust supply monitoring and watchdog functionality to ensure system reliability in industrial environments.
- Medical devices: Used in medical devices where precise voltage monitoring is critical for ensuring the proper operation of life-critical systems.
- Aerospace and defense: Suitable for applications requiring high reliability and precision in supply voltage monitoring.
Q & A
- What is the operating temperature range of the LTC2918IMS-A1#PBF?
The operating temperature range is –40°C to 85°C.
- How many internally programmed thresholds can be selected for the LTC2918IMS-A1#PBF?
Nine internally programmed thresholds can be selected using two three-state inputs.
- What is the typical quiescent supply current of the LTC2918IMS-A1#PBF?
The typical quiescent supply current is 30 μA when VCC = 2.5V, SEL1 = 0V, SEL2 = 2.5V, and TOL = OPEN.
- Can the reset timeout period be adjusted on the LTC2918IMS-A1#PBF?
- What is the package type of the LTC2918IMS-A1#PBF?
The package type is a 10-Lead Plastic MSOP.
- What is the threshold accuracy of the LTC2918IMS-A1#PBF over its operating temperature range?
The threshold accuracy is ±1.5% over the entire operating temperature range.
- What type of reset output does the LTC2918IMS-A1#PBF have?
The reset output is Active Low/Open Drain.
- How many pins does the LTC2918IMS-A1#PBF have?
The LTC2918IMS-A1#PBF has 10 pins.
- Is the LTC2918IMS-A1#PBF RoHS compliant?
- What are some common applications for the LTC2918IMS-A1#PBF?
