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LTC2909CDDB-2.5#TRPBF
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LTC2909CDDB-2.5#TRPBF

Product Overview

Category

LTC2909CDDB-2.5#TRPBF belongs to the category of integrated circuits (ICs).

Use

This product is commonly used for voltage monitoring and power supply sequencing applications.

Characteristics

  • Voltage monitoring range: 0V to 5V
  • Adjustable threshold voltage
  • Power supply sequencing capability
  • Low quiescent current
  • Wide operating temperature range: -40°C to 85°C

Package

LTC2909CDDB-2.5#TRPBF is available in a DFN-6 package.

Essence

The essence of this product lies in its ability to monitor voltages and sequence power supplies accurately and efficiently.

Packaging/Quantity

This product is typically packaged in reels, with a quantity of 2500 units per reel.

Specifications

  • Supply Voltage Range: 2.7V to 5.5V
  • Threshold Voltage Accuracy: ±1.5%
  • Quiescent Current: 20µA (typical)
  • Power-On Reset Timeout: 200ms (typical)
  • Power Supply Sequencing Delay: 100ms (typical)

Detailed Pin Configuration

  1. GND: Ground connection
  2. VIN: Input voltage
  3. VTH: Threshold voltage adjustment pin
  4. PGOOD: Power good output
  5. EN: Enable pin
  6. VCC: Power supply voltage

Functional Features

  • Voltage Monitoring: The LTC2909CDDB-2.5#TRPBF can accurately monitor input voltages within the specified range.
  • Power Supply Sequencing: This IC enables proper sequencing of multiple power supplies, ensuring reliable operation of the system.
  • Adjustable Threshold Voltage: The threshold voltage can be adjusted to suit specific application requirements.
  • Power Good Output: The PGOOD pin provides a signal indicating the status of the monitored voltage.
  • Enable Pin: The EN pin allows for easy enable/disable control of the monitoring and sequencing functions.

Advantages and Disadvantages

Advantages

  • Wide operating temperature range makes it suitable for various environments.
  • Low quiescent current helps minimize power consumption.
  • Adjustable threshold voltage offers flexibility in voltage monitoring applications.
  • Power supply sequencing capability ensures proper system operation.

Disadvantages

  • Limited voltage range (0V to 5V) may not be suitable for certain high-voltage applications.
  • DFN-6 package may require specialized handling during assembly.

Working Principles

The LTC2909CDDB-2.5#TRPBF operates by comparing the input voltage (VIN) with the adjustable threshold voltage (VTH). When VIN crosses the threshold, the power good output (PGOOD) is activated. The enable pin (EN) controls the monitoring and sequencing functions.

Detailed Application Field Plans

This product finds application in various fields, including: 1. Power supply monitoring in industrial automation systems. 2. Voltage supervision in automotive electronics. 3. Power sequencing in telecommunications equipment. 4. Battery management systems in portable devices. 5. Overvoltage protection circuits in consumer electronics.

Detailed and Complete Alternative Models

  1. LTC2909CDDB-1.8#TRPBF: Similar to LTC2909CDDB-2.5#TRPBF but with a threshold voltage of 1.8V.
  2. LTC2909CDDB-3.3#TRPBF: Similar to LTC2909CDDB-2.5#TRPBF but with a threshold voltage of 3.3V.
  3. LTC2909CDDB-5#TRPBF: Similar to LTC2909CDDB-2.5#TRPBF but with a threshold voltage of 5V.

These alternative models provide options for different threshold voltage requirements in voltage monitoring and power sequencing applications.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi LTC2909CDDB-2.5#TRPBF dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of LTC2909CDDB-2.5#TRPBF in technical solutions:

  1. Q: What is LTC2909CDDB-2.5#TRPBF? A: LTC2909CDDB-2.5#TRPBF is a specific model of the LTC2909 series, which is a voltage supervisor and watchdog timer IC.

  2. Q: What is the purpose of LTC2909CDDB-2.5#TRPBF? A: The purpose of LTC2909CDDB-2.5#TRPBF is to monitor the power supply voltage and provide reset signals or system control based on predefined thresholds.

  3. Q: What is the operating voltage range of LTC2909CDDB-2.5#TRPBF? A: LTC2909CDDB-2.5#TRPBF operates within a voltage range of 2.5V to 6V.

  4. Q: How does LTC2909CDDB-2.5#TRPBF detect undervoltage conditions? A: LTC2909CDDB-2.5#TRPBF compares the monitored voltage with a programmable threshold and asserts a reset signal if the voltage falls below the threshold.

  5. Q: Can LTC2909CDDB-2.5#TRPBF be used as a watchdog timer? A: Yes, LTC2909CDDB-2.5#TRPBF has a built-in watchdog timer feature that can be used to monitor system activity and generate a reset signal if necessary.

  6. Q: What is the typical reset timeout period of LTC2909CDDB-2.5#TRPBF? A: The typical reset timeout period of LTC2909CDDB-2.5#TRPBF is 200ms.

  7. Q: Can LTC2909CDDB-2.5#TRPBF be used in battery-powered applications? A: Yes, LTC2909CDDB-2.5#TRPBF can be used in battery-powered applications as it operates within a wide voltage range and has low quiescent current.

  8. Q: Does LTC2909CDDB-2.5#TRPBF have any built-in protection features? A: Yes, LTC2909CDDB-2.5#TRPBF has built-in protection against reverse battery connection and overvoltage conditions.

  9. Q: What is the package type of LTC2909CDDB-2.5#TRPBF? A: LTC2909CDDB-2.5#TRPBF is available in a 10-lead DFN (Dual Flat No-Lead) package.

  10. Q: Are there any application notes or reference designs available for LTC2909CDDB-2.5#TRPBF? A: Yes, Linear Technology (now part of Analog Devices) provides application notes and reference designs that can help in implementing LTC2909CDDB-2.5#TRPBF in various technical solutions.

Please note that the answers provided here are general and may vary depending on specific requirements and use cases. It's always recommended to refer to the datasheet and relevant documentation for accurate information.