ST1S06PUR

Product Overview

Category: Voltage Regulator
Use: Power Management
Characteristics: High efficiency, low dropout voltage
Package: TO-252-5L (DPAK)
Essence: Monolithic step-down regulator
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 3A
• Dropout Voltage: 300mV at 3A
• Switching Frequency: 500kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The ST1S06PUR features a 5-pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. FB: Feedback pin
5. VOUT: Output voltage pin

Functional Features

• High efficiency up to 95%
• Low dropout voltage for improved power conversion
• Adjustable output voltage through external resistors
• Overcurrent protection and thermal shutdown
• Soft-start function to reduce inrush current

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power dissipation - Wide input voltage range allows for versatile applications - Compact package size for space-constrained designs - Overcurrent protection ensures safe operation - Soft-start function prevents excessive current flow during startup

Disadvantages: - Limited maximum output current of 3A - Dropout voltage may affect performance in low input voltage scenarios

Working Principles

The ST1S06PUR is a monolithic step-down regulator that converts a higher input voltage into a lower output voltage. It utilizes a pulse width modulation (PWM) control scheme to regulate the output voltage. The regulator operates by switching an internal power MOSFET on and off at a high frequency, which reduces the input voltage to the desired output level. This switching action is controlled by feedback from the FB pin, allowing for precise regulation.

Detailed Application Field Plans

The ST1S06PUR is commonly used in various applications, including:

1. Industrial automation systems
2. Consumer electronics
3. Telecommunications equipment
4. Automotive electronics
5. Power supplies

In industrial automation systems, it can be employed to regulate voltage levels for motor control circuits. In consumer electronics, it finds application in portable devices such as smartphones and tablets. Telecommunications equipment utilizes this regulator for efficient power management. In automotive electronics, it ensures stable voltage supply to various components. Lastly, it is suitable for power supply designs requiring high efficiency and low dropout voltage.

Detailed and Complete Alternative Models

• LM2596: A popular step-down regulator with similar specifications
• LT1763: Low dropout linear regulator with adjustable output voltage
• TPS5430: High-efficiency synchronous buck converter
• ADP2303: Step-down regulator with integrated power switches
• MAX15062: Wide input voltage range, high-efficiency regulator

These alternative models offer different features and specifications, providing designers with options based on their specific requirements.

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