LT1965IDD#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High PSRR, Low Noise
• Package: DFN-8 (3mm x 3mm)
• Essence: Linear Technology's voltage 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
• Maximum Output Current: 1.1A
• Line Regulation: ±0.02% typical
• Load Regulation: ±0.1% typical
• Quiescent Current: 40µA
• PSRR: 70dB at 1kHz
• Noise: 30µVRMS (10Hz to 100kHz)

Detailed Pin Configuration

The LT1965IDD#TRPBF is an 8-pin IC with the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. ADJ: Output Voltage Adjustment
4. NC: No Connection
5. NC: No Connection
6. NC: No Connection
7. VOUT: Output Voltage
8. NC: No Connection

Functional Features

• Low dropout voltage enables operation with small input-output differentials.
• High power supply rejection ratio (PSRR) minimizes sensitivity to input voltage fluctuations.
• Low output noise ensures clean and stable power supply for sensitive applications.
• Thermal shutdown and current limit protection features enhance device reliability.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows flexibility in various applications. - Excellent line and load regulation ensure accurate and stable output voltage. - Low quiescent current minimizes power consumption. - Small package size enables space-saving designs.

Disadvantages: - Maximum output current of 1.1A may limit usage in high-power applications. - Limited number of available pins restricts additional functionality.

Working Principles

The LT1965IDD#TRPBF is a linear voltage regulator that maintains a stable output voltage despite fluctuations in the input voltage. It achieves this by utilizing a pass transistor that adjusts its resistance to regulate the output voltage. The device operates in dropout mode, meaning it can maintain regulation even when the input voltage is only slightly higher than the desired output voltage.

Detailed Application Field Plans

The LT1965IDD#TRPBF finds application in various fields, including but not limited to: - Portable electronic devices - Battery-powered systems - Automotive electronics - Industrial control systems - Communication equipment

Detailed and Complete Alternative Models

Some alternative models to the LT1965IDD#TRPBF include: - LM1117: Low dropout voltage regulator with adjustable or fixed output voltage options. - LT1763: Ultra-low noise LDO regulator with high PSRR and low dropout voltage. - ADP3339: High accuracy, low dropout voltage regulator with adjustable or fixed output voltage options.

These alternative models offer similar functionalities and can be considered based on specific requirements and design constraints.

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