S-1172B38-U5T1G

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Accuracy, Low Quiescent Current
• Package: SOT-23-5
• Essence: Regulates voltage to a specific level
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 30µA
• Output Current: 100mA
• Line Regulation: ±0.05%
• Load Regulation: ±0.1%

Detailed Pin Configuration

The S-1172B38-U5T1G has a total of five pins: 1. VIN: Input Voltage Pin 2. GND: Ground Pin 3. CE: Chip Enable Pin 4. VOUT: Output Voltage Pin 5. NC: No Connection Pin

Functional Features

• Low dropout voltage ensures stable output even with low input voltage.
• High accuracy provides precise regulation of the output voltage.
• Low quiescent current minimizes power consumption in standby mode.
• Overcurrent protection safeguards the IC from excessive load currents.
• Thermal shutdown protection prevents overheating.

Advantages and Disadvantages

Advantages: - Compact SOT-23-5 package allows for space-saving designs. - Wide input voltage range enables versatile applications. - Excellent line and load regulation ensures stable performance. - Low quiescent current extends battery life in portable devices.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Dropout voltage of 200mV may cause a slight voltage drop across the regulator.

Working Principles

The S-1172B38-U5T1G is a linear voltage regulator that uses a PNP transistor as the pass element. It regulates the output voltage by comparing a reference voltage with the feedback voltage from a resistive divider network. The pass element adjusts its resistance to maintain a constant output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The S-1172B38-U5T1G is commonly used in various electronic devices, including: - Battery-powered devices such as smartphones, tablets, and portable media players. - IoT (Internet of Things) devices requiring stable power supply. - Automotive applications where low dropout voltage and high accuracy are crucial. - Industrial equipment and instrumentation that demand reliable voltage regulation.

Detailed and Complete Alternative Models

1. S-1172B33-U5T1G: Similar specifications but with an output voltage range of 1.2V to 3.6V.
2. S-1172B50-U5T1G: Similar specifications but with an output voltage range of 1.2V to 5.0V.
3. S-1172B18-U5T1G: Similar specifications but with an output voltage range of 1.2V to 1.8V.

These alternative models provide flexibility in choosing the desired output voltage range while maintaining similar characteristics and performance.

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