LTC2908IDDB-B1#TRMPBF

Product Overview

Category: Integrated Circuits (ICs)

Use: The LTC2908IDDB-B1#TRMPBF is a voltage supervisor and watchdog timer IC. It is designed to monitor the power supply voltage of electronic systems and provide reset signals when necessary.

Characteristics: - Monitors power supply voltage - Provides reset signals - Watchdog timer functionality - Low power consumption - Small form factor

Package: DFN-6 (2mm x 3mm)

Essence: The LTC2908IDDB-B1#TRMPBF is an essential component in ensuring the reliable operation of electronic systems by monitoring the power supply voltage and providing reset signals when needed.

Packaging/Quantity: The LTC2908IDDB-B1#TRMPBF is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 1.5V to 5.5V
• Threshold Voltage Accuracy: ±1.5%
• Reset Timeout Period: Adjustable from 1ms to 10s
• Quiescent Current: 7µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LTC2908IDDB-B1#TRMPBF has the following pin configuration:

```

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| | --| RESET |-- --| GND |-- --| VIN |-- --| VOUT |-- --| WDI |-- |___________| ```

• RESET: Output reset signal
• GND: Ground connection
• VIN: Power supply voltage input
• VOUT: Regulated output voltage
• WDI: Watchdog input

Functional Features

1. Voltage Monitoring: The LTC2908IDDB-B1#TRMPBF continuously monitors the power supply voltage and compares it to a programmable threshold.
2. Reset Generation: When the power supply voltage falls below the threshold, the LTC2908IDDB-B1#TRMPBF generates a reset signal to initiate system reset or shutdown.
3. Watchdog Timer: The watchdog input (WDI) allows external monitoring of system activity. If the WDI input is not toggled within a specified timeout period, the LTC2908IDDB-B1#TRMPBF generates a reset signal.

Advantages and Disadvantages

Advantages: - Accurate voltage monitoring - Adjustable reset timeout period - Low quiescent current consumption - Small form factor for space-constrained applications

Disadvantages: - Limited number of available alternative models - May require additional external components for specific applications

Working Principles

The LTC2908IDDB-B1#TRMPBF operates by comparing the power supply voltage with a programmable threshold. When the voltage falls below the threshold, the IC generates a reset signal. Additionally, the watchdog timer functionality ensures that the system remains active by monitoring the WDI input and generating a reset signal if no activity is detected within the specified timeout period.

Application Field Plans

The LTC2908IDDB-B1#TRMPBF finds applications in various electronic systems where reliable power supply monitoring and reset generation are critical. Some potential application fields include: - Industrial control systems - Automotive electronics - Medical devices - Consumer electronics - Communication equipment

Alternative Models

While the LTC2908IDDB-B1#TRMPBF is a highly capable voltage supervisor and watchdog timer IC, there are a few alternative models available in the market that offer similar functionalities. Some notable alternatives include: - MAX809: Voltage supervisors with adjustable reset timeout period - ADM6315: Voltage supervisors with watchdog timer functionality - TPS3839: Ultra-low power voltage supervisors

These alternative models can be considered based on specific application requirements and availability.

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