LTC2955IDDB-2

Product Overview

Category

LTC2955IDDB-2 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for power management and control.

Characteristics

The LTC2955IDDB-2 is known for its high efficiency and reliability. It offers advanced features for power supply monitoring and system control.

Package

The LTC2955IDDB-2 comes in a small 8-pin DFN package, which allows for easy integration into various electronic systems.

Essence

The essence of LTC2955IDDB-2 lies in its ability to provide accurate power supply monitoring and control, ensuring the stability and safety of electronic devices.

Packaging/Quantity

The product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

The LTC2955IDDB-2 has the following specifications:

• Input Voltage Range: 2.7V to 26V
• Quiescent Current: 20µA
• Power-On Reset Threshold: Adjustable from 1.6V to 5.5V
• Power Supply Sequencing: Programmable delay
• Watchdog Timer: Adjustable timeout period
• Power Good Output: Open-drain output
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC2955IDDB-2 has the following pin configuration:

1. VIN - Input voltage
2. GND - Ground
3. VOUT - Output voltage
4. PGOOD - Power good output
5. WDI - Watchdog input
6. RST - Reset output
7. EN - Enable input
8. DELAY - Delay programming input

Functional Features

The LTC2955IDDB-2 offers the following functional features:

1. Power-On Reset (POR): Monitors the input voltage and generates a reset signal until the voltage reaches the desired threshold.
2. Watchdog Timer: Provides a mechanism to reset the system if it becomes unresponsive or hangs.
3. Power Supply Sequencing: Allows for controlled power-up and power-down sequences, ensuring proper operation of the system.
4. Power Good Output: Indicates the status of the power supply, providing a signal to other components in the system.
5. Enable Input: Enables or disables the LTC2955IDDB-2 functionality.
6. Delay Programming: Allows for adjustable delay periods for power sequencing.

Advantages and Disadvantages

Advantages

• High efficiency and reliability
• Accurate power supply monitoring
• Programmable power sequencing
• Adjustable watchdog timer
• Small package size for easy integration

Disadvantages

• Limited input voltage range (2.7V to 26V)
• Requires external components for complete functionality

Working Principles

The LTC2955IDDB-2 operates by continuously monitoring the input voltage and generating appropriate signals based on predefined thresholds. It ensures stable power supply conditions and provides control features such as power sequencing and watchdog timer functionality.

Detailed Application Field Plans

The LTC2955IDDB-2 finds applications in various electronic devices that require precise power management and control. Some potential application fields include:

1. Battery-powered devices: Ensures efficient power utilization and prolongs battery life.
2. Embedded systems: Provides reliable power supply monitoring and control for microcontrollers and other components.
3. Industrial automation: Facilitates safe power-up and power-down sequences in complex control systems.
4. Automotive electronics: Enhances the stability and safety of automotive electronic systems.

Detailed and Complete Alternative Models

1. LTC2954: Similar functionality with additional power supply sequencing options.
2. MAX16050: Offers comparable power management features with a different pin configuration.
3. TPS3890: Provides power-on reset and watchdog timer functionality in a different package.

These alternative models offer similar capabilities to the LTC2955IDDB-2, providing options for different design requirements and preferences.

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