LTC2909CTS8-3.3#TRPBF

Product Overview

Category

LTC2909CTS8-3.3#TRPBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for voltage monitoring and power supply sequencing.

Characteristics

• Voltage monitoring: LTC2909CTS8-3.3#TRPBF provides accurate monitoring of voltage levels.
• Power supply sequencing: It ensures proper sequencing of power supplies, preventing potential damage to sensitive components.
• Package: The LTC2909CTS8-3.3#TRPBF comes in an 8-pin small outline package (SOIC).
• Essence: This IC is designed to enhance system reliability by monitoring voltage levels and controlling power supply sequencing.
• Packaging/Quantity: The LTC2909CTS8-3.3#TRPBF is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Voltage Threshold Accuracy: ±1.5%
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10μA (typical)
• Output Type: Active-Low/Open-Drain
• Power-On Reset Timeout: Adjustable from 100ms to 10s

Detailed Pin Configuration

The LTC2909CTS8-3.3#TRPBF has the following pin configuration:

1. GND: Ground connection
2. VIN: Input voltage to be monitored
3. VCC: Power supply voltage for the IC
4. RESET#: Active-low reset output
5. GATE: Enable input for power supply sequencing
6. THRESH: Threshold voltage setting pin
7. TIMEOUT: Power-on reset timeout adjustment pin
8. GND: Ground connection

Functional Features

1. Voltage Monitoring: The LTC2909CTS8-3.3#TRPBF continuously monitors the input voltage and compares it to a user-defined threshold.
2. Power Supply Sequencing: It provides a gate input that enables power supply sequencing, ensuring proper startup and shutdown sequences.
3. Active-Low Reset Output: The RESET# pin goes low when the monitored voltage falls below the threshold, indicating a fault condition.
4. Adjustable Timeout: The TIMEOUT pin allows users to adjust the power-on reset timeout period according to their specific requirements.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring ensures system stability and reliability.
• Power supply sequencing prevents potential damage to sensitive components during startup and shutdown.
• Adjustable timeout feature allows customization for different applications.
• Small package size facilitates integration into compact electronic devices.

Disadvantages

• Limited voltage range (2.7V to 5.5V) may not be suitable for all applications requiring voltage monitoring.
• Requires additional external components for complete functionality.

Working Principles

The LTC2909CTS8-3.3#TRPBF operates by comparing the input voltage (VIN) with the threshold voltage (THRESH). If VIN falls below THRESH, the RESET# pin goes low, indicating a fault condition. The GATE input allows for power supply sequencing, ensuring proper startup and shutdown sequences. The TIMEOUT pin allows users to adjust the power-on reset timeout period, providing flexibility in different application scenarios.

Detailed Application Field Plans

The LTC2909CTS8-3.3#TRPBF finds applications in various fields, including:

1. Industrial Automation: Used in control systems to monitor and sequence power supplies, ensuring reliable operation of machinery and equipment.
2. Telecommunications: Enables voltage monitoring and power supply sequencing in telecom infrastructure, preventing damage to sensitive components during power fluctuations.
3. Automotive Electronics: Ensures proper voltage levels and sequencing in automotive electronic systems, enhancing overall reliability and safety.
4. Consumer Electronics: Integrated into devices such as smartphones, tablets, and laptops to monitor voltage levels and control power supply sequences, improving device performance and longevity.

Detailed and Complete Alternative Models

1. LTC2909CTS8-5#TRPBF: Similar to LTC2909CTS8-3.3#TRPBF but with a higher threshold voltage of 5V.
2. LTC2909ITS8-3.3#TRPBF: Offers the same features as LTC2909CTS8-3.3#TRPBF but comes in an industrial temperature range (-40°C to +125°C).
3. LTC2909HMS8-3.3#TRPBF: Provides the same functionality as LTC2909CTS8-3.3#TRPBF but is housed in a smaller MSOP package.

These alternative models offer similar capabilities and can be considered based on specific application requirements.

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