L7986TATR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage, adjustable output voltage, thermal shutdown, current limit protection
• Package: PowerSO-10 package
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 38V
• Output Voltage Range: 1.2V to 35V
• Output Current: Up to 3A
• Dropout Voltage: 350mV at 3A
• Quiescent Current: 100µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The L7986TATR IC has the following pin configuration:

1. EN: Enable pin
2. GND: Ground pin
3. FB: Feedback pin
4. VOUT: Output voltage pin
5. COMP: Compensation pin
6. SS/TR: Soft-start/Tracking pin
7. VIN: Input voltage pin
8. PGND: Power ground pin
9. NC: No connection
10. BOOT: Bootstrap capacitor pin

Functional Features

• Adjustable output voltage through external resistors
• High efficiency due to low dropout voltage
• Thermal shutdown protection prevents overheating
• Current limit protection safeguards against excessive current
• Soft-start function for controlled startup
• Tracking function for synchronized operation with other regulators

Advantages and Disadvantages

Advantages

• Wide input voltage range allows flexibility in various applications
• High output current capability suits power-hungry devices
• Low dropout voltage minimizes power dissipation
• Excellent thermal management ensures reliable operation
• Adjustable output voltage accommodates different requirements

Disadvantages

• Requires external resistors for output voltage adjustment
• PowerSO-10 package may not be suitable for space-constrained designs

Working Principles

The L7986TATR is a linear voltage regulator that regulates the output voltage based on the feedback received from the FB pin. It operates by comparing the reference voltage with the feedback voltage and adjusts the pass transistor accordingly to maintain a stable output voltage.

Detailed Application Field Plans

The L7986TATR is commonly used in various applications, including:

1. Industrial automation systems
2. Automotive electronics
3. Power supplies for consumer electronics
4. Telecommunications equipment
5. Medical devices
6. LED lighting systems

Detailed and Complete Alternative Models

Some alternative models to the L7986TATR include:

1. LM317: Adjustable voltage regulator with similar characteristics
2. LT1085: Low dropout positive fixed voltage regulator
3. TPS7A47: High-voltage, low-noise linear regulator
4. ADP3339: Low dropout linear regulator with adjustable output voltage
5. MAX603: Precision, low-dropout voltage reference

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

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