LTC2921IGN-2.5#PBF

Product Overview

Category

LTC2921IGN-2.5#PBF 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-2.5#PBF provides accurate monitoring of input voltages.
• Power supply sequencing: It enables controlled power-up and power-down sequences, ensuring proper operation of electronic systems.
• Package: This IC comes in a small outline integrated circuit (SOIC) package.
• Essence: The LTC2921IGN-2.5#PBF is an essential component for reliable power management in various electronic devices.
• Packaging/Quantity: It is typically available in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

The LTC2921IGN-2.5#PBF has the following specifications:

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 2.5V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 25µA (typical)
• Maximum Supply Current: 100µA
• Output Current: 50mA
• Power Supply Sequencing Time: 10ms (typical)

Detailed Pin Configuration

The LTC2921IGN-2.5#PBF has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. EN: Enable pin for power sequencing control
4. PGOOD: Power good output indicating valid output voltage
5. FLT: Fault output indicating undervoltage or overvoltage conditions
6. OV: Overvoltage threshold adjustment pin
7. UV: Undervoltage threshold adjustment pin
8. VOUT: Output voltage pin

Functional Features

The LTC2921IGN-2.5#PBF offers the following functional features:

• Voltage Monitoring: It accurately monitors the input voltage and provides fault detection for undervoltage and overvoltage conditions.
• Power Sequencing: The enable pin allows controlled power-up and power-down sequences, ensuring proper system operation.
• Fault Indication: The FLT pin provides an output signal to indicate any undervoltage or overvoltage conditions.
• Power Good Output: The PGOOD pin indicates when the output voltage is within the specified range.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring ensures reliable operation of electronic devices.
• Controlled power sequencing prevents potential damage to sensitive components during power-up and power-down.
• Small package size enables space-efficient integration into various electronic systems.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Temperature range limitations restrict usage in extreme temperature environments.

Working Principles

The LTC2921IGN-2.5#PBF operates by continuously monitoring the input voltage and comparing it to the preset undervoltage and overvoltage thresholds. When the input voltage falls below the undervoltage threshold or exceeds the overvoltage threshold, the fault output (FLT) is activated. The enable pin (EN) controls the power sequencing, allowing for a controlled power-up and power-down sequence. The power good output (PGOOD) indicates when the output voltage is within the specified range.

Detailed Application Field Plans

The LTC2921IGN-2.5#PBF finds application in various electronic devices, including but not limited to: - Mobile devices - Computer peripherals - Industrial control systems - Automotive electronics - Medical equipment

In mobile devices, it ensures proper power sequencing during device startup and shutdown, preventing potential damage to internal components. In computer peripherals, it provides voltage monitoring and fault detection, ensuring reliable operation. Industrial control systems benefit from its power supply sequencing capabilities, enabling controlled startup of multiple subsystems. Automotive electronics rely on the LTC2921IGN-2.5#PBF for accurate voltage monitoring and fault indication. Medical equipment utilizes this IC for reliable power management and fault detection.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LTC2921IGN-2.5#PBF include: - LTC2920IGN-2.5#PBF - MAX16050ATG+ - TPS3897DRVR

These alternative models provide voltage monitoring, power sequencing, and fault detection features, making them suitable replacements for the LTC2921IGN-2.5#PBF in various applications.

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