LT3092EST

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics:
  • Low Dropout Voltage
  • Adjustable Output Voltage
  • High Current Capability
  • Thermal Shutdown Protection
• Package: SOT-223
• Essence: Linear Technology's LT3092EST is a high performance voltage regulator designed for various applications.
• Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.

Specifications

• Input Voltage Range: 1.2V to 40V
• Output Voltage Range: 0.4V to 32V
• Dropout Voltage: 300mV
• Maximum Output Current: 200mA
• Quiescent Current: 1.5mA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3092EST package consists of five pins:

1. VIN: Input Voltage Pin
2. GND: Ground Pin
3. ADJ: Adjust Pin (for setting the output voltage)
4. FB: Feedback Pin (connected to an external resistor divider network)
5. VOUT: Output Voltage Pin

Functional Features

• Low Dropout Voltage: The LT3092EST exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be easily adjusted using an external resistor divider network connected to the ADJ and FB pins.
• High Current Capability: With a maximum output current of 200mA, the LT3092EST can handle a wide range of load requirements.
• Thermal Shutdown Protection: The IC incorporates thermal shutdown protection, which prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range - Adjustable output voltage - Low dropout voltage - High current capability - Thermal shutdown protection

Disadvantages: - Limited maximum output current (200mA)

Working Principles

The LT3092EST is a linear voltage regulator that operates by maintaining a constant voltage difference between the input and output pins. It uses a feedback mechanism to adjust the output voltage based on the voltage divider network connected to the ADJ and FB pins.

When the input voltage exceeds the desired output voltage, the regulator reduces the voltage across its internal pass transistor, ensuring a stable output voltage. Conversely, if the input voltage drops below the desired output voltage, the regulator increases the voltage across the pass transistor to maintain the desired output voltage.

Detailed Application Field Plans

The LT3092EST can be used in various applications, including but not limited to:

1. Battery-powered devices
2. Portable electronic devices
3. Automotive electronics
4. Industrial control systems
5. Power management circuits

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar features.
2. LT3080: Another high-performance linear voltage regulator with adjustable output voltage and high current capability.
3. LM1117: A low dropout voltage regulator suitable for low-power applications.

These alternative models offer similar functionality and can be considered as substitutes for the LT3092EST depending on specific requirements.

In conclusion, the LT3092EST is a versatile voltage regulator offering adjustable output voltage, low dropout voltage, and high current capability. With its thermal shutdown protection and wide input voltage range, it finds applications in various fields such as battery-powered devices, portable electronics, automotive electronics, industrial control systems, and power management circuits.