LT3689IMSE-5#PBF

Product Overview

Category

The LT3689IMSE-5#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators category.

Use

This product is primarily used for voltage regulation in various electronic devices and systems. It provides a stable output voltage, making it suitable for applications that require precise power supply.

Characteristics

• Input Voltage Range: 2.4V to 36V
• Output Voltage: 5V
• Maximum Output Current: 500mA
• Package Type: MSOP-10E
• Operating Temperature Range: -40°C to 125°C
• Efficiency: Up to 95%
• Low Quiescent Current: 20µA

Package and Quantity

The LT3689IMSE-5#PBF is available in an MSOP-10E package. It is sold individually or in reels containing a specific quantity, typically 250 or 1000 units per reel.

Specifications

• Input Voltage Range: 2.4V to 36V
• Output Voltage: 5V ±2%
• Maximum Output Current: 500mA
• Dropout Voltage: 300mV at 500mA
• Quiescent Current: 20µA
• Ripple Rejection: 70dB at 1kHz
• Switching Frequency: 2.25MHz
• Shutdown Current: <1µA
• Soft-Start Time: 200µs

Pin Configuration

The LT3689IMSE-5#PBF has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Pin
4. SS/TR: Soft-Start/Tracking Pin
5. VOUT: Output Voltage
6. SW: Switch Pin
7. SW: Switch Pin
8. GND: Ground
9. VOUT: Output Voltage
10. VIN: Input Voltage

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss during voltage regulation.
• Low quiescent current enables energy-efficient operation.
• Soft-start feature prevents excessive inrush current during startup.
• Excellent ripple rejection provides clean and stable output voltage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows compatibility with various power sources.
• High efficiency results in reduced power dissipation and longer battery life.
• Compact MSOP-10E package facilitates space-constrained designs.
• Soft-start feature protects the circuit from excessive current during startup.

Disadvantages

• Limited maximum output current of 500mA may not be suitable for high-power applications.
• Dropout voltage of 300mV at 500mA may affect performance in low-input voltage scenarios.

Working Principles

The LT3689IMSE-5#PBF is a step-down (buck) voltage regulator that uses a synchronous rectification architecture. It operates by converting a higher input voltage to a lower, regulated output voltage. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage. This regulation process ensures a stable power supply for connected devices.

Detailed Application Field Plans

The LT3689IMSE-5#PBF can be applied in various electronic systems and devices, including but not limited to: - Battery-powered devices - Industrial automation equipment - Automotive electronics - Telecommunications infrastructure - Portable consumer electronics

Detailed and Complete Alternative Models

1. LT3689AMSE-5#PBF: Similar specifications, but with an adjustable output voltage.
2. LT3689BMSE-5#PBF: Similar specifications, but with a fixed 3.3V output voltage.
3. LT3689CMSE-5#PBF: Similar specifications, but with a fixed 2.5V output voltage.

These alternative models provide flexibility in choosing the appropriate output voltage for specific applications while maintaining similar characteristics and performance to the LT3689IMSE-5#PBF.

In conclusion, the LT3689IMSE-5#PBF is a voltage regulator IC that offers a wide input voltage range, high efficiency, and low quiescent current. Its compact package and functional features make it suitable for various electronic applications. However, its limited maximum output current and dropout voltage should be considered when selecting this product for specific use cases.