LTC2921IGN-3.3#TRPBF

Product Overview

Category

LTC2921IGN-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 applications.

Characteristics

• Voltage monitoring: The LTC2921IGN-3.3#TRPBF provides accurate monitoring of the input voltage.
• Power supply sequencing: It ensures proper sequencing of multiple power supplies, preventing potential damage to sensitive components.
• Package: The LTC2921IGN-3.3#TRPBF comes in a small outline integrated circuit (SOIC) package.
• Essence: This IC is designed to enhance the reliability and efficiency of power management systems.
• Packaging/Quantity: The LTC2921IGN-3.3#TRPBF is typically packaged in reels, with a quantity of 2500 units per reel.

Specifications

The LTC2921IGN-3.3#TRPBF has the following specifications:

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 20µA (typical)
• Power Supply Sequencing Delay: 100ms (typical)

Pin Configuration

The LTC2921IGN-3.3#TRPBF has a total of 16 pins. The pin configuration is as follows:

1. VCC
2. GND
3. IN1
4. IN2
5. IN3
6. IN4
7. OUT1
8. OUT2
9. OUT3
10. OUT4
11. FLT1
12. FLT2
13. FLT3
14. FLT4
15. SEQ
16. GATE

Functional Features

The LTC2921IGN-3.3#TRPBF offers the following functional features:

1. Voltage Monitoring: It accurately monitors the input voltage and provides a fault indication if it falls below or exceeds the specified range.
2. Power Supply Sequencing: This IC ensures proper sequencing of multiple power supplies, preventing potential damage to sensitive components during power-up and power-down sequences.
3. Fault Detection: The LTC2921IGN-3.3#TRPBF detects faults in the power supply and provides an output signal to indicate the fault condition.
4. Gate Control: It allows control of external power switches through the GATE pin.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring ensures reliable operation of electronic devices.
• Proper power supply sequencing prevents damage to sensitive components.
• Small package size enables space-efficient designs.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited input voltage range (2.7V to 5.5V).
• Power supply sequencing delay may not be suitable for certain applications with strict timing requirements.

Working Principles

The LTC2921IGN-3.3#TRPBF operates by continuously monitoring the input voltage and comparing it to the desired output voltage. If the input voltage falls below or exceeds the specified range, the IC generates a fault signal. Additionally, it controls the sequencing of multiple power supplies to ensure proper power-up and power-down sequences.

Application Field Plans

The LTC2921IGN-3.3#TRPBF finds extensive application in various fields, including:

1. Consumer Electronics: Used in smartphones, tablets, and other portable devices to monitor and sequence power supplies.
2. Industrial Automation: Ensures reliable power management in industrial control systems and equipment.
3. Automotive Electronics: Provides voltage monitoring and sequencing in automotive applications, such as infotainment systems and engine control units.
4. Telecommunications: Used in networking equipment to monitor and control power supplies.

Alternative Models

For those seeking alternative options, the following models can be considered:

1. LTC2920IGN-3.3#TRPBF
2. LTC2922IGN-3.3#TRPBF
3. LTC2923IGN-3.3#TRPBF

These models offer similar functionality and characteristics to the LTC2921IGN-3.3#TRPBF, providing flexibility in design choices.

In conclusion, the LTC2921IGN-3.3#TRPBF is an integrated circuit designed for voltage monitoring and power supply sequencing applications. Its accurate monitoring, fault detection, and sequencing capabilities make it a reliable choice for various electronic devices. While it has some limitations, its advantages outweigh the disadvantages, making it a popular choice in the industry.