LM2642MTC

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Low dropout voltage - Overcurrent protection - Thermal shutdown protection

Package: TSSOP-16

Essence: The LM2642MTC is a voltage regulator IC designed to provide a stable and adjustable output voltage from a wide range of input voltages.

Packaging/Quantity: The LM2642MTC is typically sold in reels containing 250 units.

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 1.23V to 37V
• Output Current: Up to 1A
• Dropout Voltage: 0.6V (typical)
• Quiescent Current: 80µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2642MTC has a total of 16 pins, which are assigned specific functions as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for setting the output voltage
4. EN: Enable pin for turning the regulator on/off
5. SS/TR: Soft-start/Tracking pin for controlling the startup behavior
6. COMP: Compensation pin for stability adjustment
7. VCC: Supply voltage pin for internal circuitry
8. PGND: Power ground pin
9. SW: Switching node pin
10. BST: Bootstrap capacitor connection pin
11. AGND: Analog ground pin
12. NC: No connection pin
13. NC: No connection pin
14. NC: No connection pin
15. NC: No connection pin
16. VOUT: Output voltage pin

Functional Features

• Wide input voltage range allows for versatile applications
• Adjustable output voltage provides flexibility in various scenarios
• High efficiency minimizes power loss
• Overcurrent protection safeguards the circuit from excessive current
• Thermal shutdown protection prevents overheating and damage

Advantages and Disadvantages

Advantages: - Wide input voltage range makes it suitable for a variety of applications - Adjustable output voltage offers versatility - High efficiency reduces power consumption - Overcurrent and thermal protection enhance reliability

Disadvantages: - Limited output current capacity (up to 1A) - Dropout voltage may affect performance in low voltage applications

Working Principles

The LM2642MTC operates as a step-down voltage regulator. It uses a switching mechanism to efficiently convert the input voltage to the desired output voltage. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain a stable output voltage, even with varying input voltages.

Detailed Application Field Plans

The LM2642MTC is commonly used in the following applications:

1. Power supplies for industrial equipment
2. Automotive electronics
3. Battery-powered devices
4. Distributed power systems
5. Telecommunications equipment
6. LED lighting systems

Alternative Models

Here are some alternative models that offer similar functionality to the LM2642MTC:

1. LM2576-ADJ
2. LT1083CP
3. TPS5430DDAR
4. MAX5033DASA
5. ADP2303ARDZ

These alternatives can be considered based on specific requirements and availability.

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