LTC2909IDDB-5#TRM

Product Overview

Category

LTC2909IDDB-5#TRM 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: The LTC2909IDDB-5#TRM is designed to monitor multiple voltage levels within a system.
• Power supply sequencing: It ensures that different power supplies are turned on/off in a specific order to prevent damage to sensitive components.
• Package: The LTC2909IDDB-5#TRM comes in a small 8-pin DFN package, making it suitable for space-constrained applications.
• Essence: This IC provides accurate and reliable voltage monitoring and power sequencing capabilities.
• Packaging/Quantity: The LTC2909IDDB-5#TRM is typically sold in reels containing a specified quantity of units.

Specifications

The LTC2909IDDB-5#TRM has the following specifications:

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Voltage Monitoring Threshold Accuracy: ±1.5%
• Power Sequencing Delay: Programmable delay up to 10 seconds
• Quiescent Current: 20µA (typical)

Pin Configuration

The LTC2909IDDB-5#TRM features an 8-pin DFN package with the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. VIN1: Voltage input 1
4. VIN2: Voltage input 2
5. VIN3: Voltage input 3
6. VIN4: Voltage input 4
7. SEQ: Power sequencing control input
8. FLT: Fault output indicator

Functional Features

The LTC2909IDDB-5#TRM offers the following functional features:

1. Voltage Monitoring: It continuously monitors the voltage levels of multiple inputs and provides an output signal when a threshold is exceeded.
2. Power Sequencing: The sequencing control input allows for precise power supply sequencing, ensuring proper startup and shutdown sequences.
3. Programmable Delay: The IC enables users to set a delay time for power sequencing, allowing for customization based on specific system requirements.
4. Fault Output Indicator: The fault output pin provides an indication when a voltage threshold is exceeded or a power sequencing error occurs.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring across multiple inputs
• Customizable power sequencing delay
• Small package size suitable for space-constrained applications
• Low quiescent current consumption

Disadvantages

• Limited number of voltage inputs (up to 4)
• Requires external components for complete functionality

Working Principles

The LTC2909IDDB-5#TRM operates by comparing the voltage levels of the input pins with internally set thresholds. When a voltage exceeds the programmed threshold, the fault output is triggered. Additionally, the sequencing control input allows for precise power supply sequencing by enabling or disabling the power supplies in a specific order.

Application Field Plans

The LTC2909IDDB-5#TRM finds application in various fields, including but not limited to: - Industrial automation systems - Telecommunications equipment - Automotive electronics - Medical devices - Consumer electronics

Alternative Models

Here are some alternative models that offer similar functionality to the LTC2909IDDB-5#TRM: - LTC2909IDD-5#TRPBF - MAX16055ETG+ - ADM1177-1ARDZ-RL7 - TPS3700DDCR

These alternatives can be considered based on specific requirements and availability.

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