S-1172B20-U5T1U

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics:
  • Low dropout voltage
  • High output voltage accuracy
  • Low quiescent current
  • Thermal shutdown protection
• Package: SOT-23-5
• Essence: Linear voltage regulator
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV (typical) at 100mA load current
• Output Current: 100mA
• Quiescent Current: 30µA (typical)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.3% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1172B20-U5T1U has a total of five pins arranged as follows:

```

---

| | --| Vout | --| GND | --| Vin | --| CE | |___________| ```

• Vout: Output voltage pin
• GND: Ground pin
• Vin: Input voltage pin
• CE: Chip enable pin

Functional Features

• Low dropout voltage ensures stable operation even with small input-output voltage differentials.
• High output voltage accuracy provides precise voltage regulation for various applications.
• Low quiescent current minimizes power consumption in standby mode.
• Thermal shutdown protection prevents the IC from overheating and damaging itself.

Advantages and Disadvantages

Advantages: - Compact SOT-23-5 package allows for space-saving designs. - Wide input voltage range enables compatibility with various power sources. - Excellent line and load regulation ensures stable output voltage under different conditions.

Disadvantages: - Limited output current of 100mA may not be sufficient for high-power applications. - Operating temperature range is limited to -40°C to +85°C, which may not be suitable for extreme environments.

Working Principles

The S-1172B20-U5T1U is a linear voltage regulator that uses a pass transistor to regulate the output voltage. When the input voltage (Vin) is higher than the desired output voltage (Vout), the pass transistor conducts and regulates the output voltage to the desired level. The control circuitry inside the IC continuously monitors the output voltage and adjusts the pass transistor accordingly to maintain a stable output.

Detailed Application Field Plans

The S-1172B20-U5T1U is commonly used in various electronic devices and systems where a stable and regulated voltage supply is required. Some typical application fields include: - Battery-powered devices - Portable consumer electronics - Industrial automation systems - Automotive electronics - Medical equipment

Detailed and Complete Alternative Models

• S-1172B33-U5T1U: Same specifications but with an output voltage range of 3.3V to 5.5V.
• S-1172B12-U5T1U: Same specifications but with an output voltage range of 1.2V to 5.5V.
• S-1172B50-U5T1U: Same specifications but with an output voltage range of 5.0V to 5.5V.

These alternative models provide similar functionality but with different output voltage ranges to cater to specific application requirements.

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