LT1965IQ#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High PSRR, Low Noise
• Package: SOT-223
• Essence: Linear Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 1.8V to 20V
• Output Voltage Range: 1.21V to 19.5V
• Dropout Voltage: 300mV at 1A Load Current
• Output Current: Up to 1.1A
• Line Regulation: ±0.02% Typical
• Load Regulation: ±0.1% Typical
• Quiescent Current: 40µA Typical
• PSRR: 70dB at 1kHz
• Noise: 30µVRMS (10Hz to 100kHz)
• Thermal Shutdown Protection

Detailed Pin Configuration

The LT1965IQ#TRPBF is a 5-pin device with the following pin configuration:

1. VIN: Input Voltage Pin
2. GND: Ground Pin
3. ADJ: Adjustable Pin for Output Voltage Setting
4. NC: No Connection
5. VOUT: Output Voltage Pin

Functional Features

• Low dropout voltage enables operation with small input-output differentials.
• High power supply rejection ratio (PSRR) ensures stability even in noisy environments.
• Low output noise makes it suitable for sensitive applications.
• Thermal shutdown protection prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows flexibility in various applications. - Excellent line and load regulation provide stable output voltage. - Low quiescent current minimizes power consumption. - Compact SOT-223 package facilitates easy integration.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Dropout voltage of 300mV may restrict use in low voltage scenarios.

Working Principles

The LT1965IQ#TRPBF is a linear regulator that maintains a stable output voltage despite fluctuations in the input voltage. It achieves this by using a pass transistor to regulate the output voltage based on a feedback mechanism. The adjustable pin (ADJ) allows users to set the desired output voltage within the specified range.

Detailed Application Field Plans

The LT1965IQ#TRPBF is commonly used in various electronic devices and systems, including but not limited to:

1. Battery-powered devices: Portable electronics, handheld instruments, etc.
2. Automotive applications: Infotainment systems, navigation devices, etc.
3. Industrial equipment: Control systems, sensors, etc.
4. Communication systems: Wireless routers, base stations, etc.
5. Audio/video equipment: Amplifiers, audio processors, etc.

Detailed and Complete Alternative Models

1. LM1117: Low dropout voltage regulator with adjustable and fixed output voltage options.
2. LT1763: Ultra-low noise LDO regulator with high PSRR and low quiescent current.
3. MAX603: Low-dropout, low-noise voltage regulator with integrated power-on reset.

These alternative models offer similar functionality and can be considered as substitutes for the LT1965IQ#TRPBF in different applications.

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