S-1133B12-U5T1U

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics:
  • High efficiency
  • Low dropout voltage
  • Wide input voltage range
  • Overcurrent protection
  • Thermal shutdown protection
• Package: SOT-23-5
• Essence: Voltage regulator IC
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage: 1.2V
• Output Current: 500mA
• Dropout Voltage: 200mV (typical)
• Quiescent Current: 50µA (typical)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.1% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1133B12-U5T1U has a total of five pins arranged as follows:

```

---

| | --| Vout Vin |-- Pin 1: Input Voltage (Vin) --| GND NC |-- Pin 2: Ground (GND) --| NC NC |-- Pin 3: Not Connected (NC) --| EN NC |-- Pin 4: Enable (EN) --| NC Vout |-- Pin 5: Output Voltage (Vout) |___________| ```

Functional Features

• High efficiency: The S-1133B12-U5T1U offers high efficiency, minimizing power loss during voltage regulation.
• Low dropout voltage: With a low dropout voltage of only 200mV, this IC can maintain a stable output even when the input voltage is close to the desired output voltage.
• Wide input voltage range: The IC can accept input voltages ranging from 2.5V to 6.0V, providing flexibility in various applications.
• Overcurrent protection: It incorporates overcurrent protection, safeguarding the circuit and load from excessive current.
• Thermal shutdown protection: The IC includes thermal shutdown protection, preventing damage due to excessive heat.

Advantages and Disadvantages

Advantages: - High efficiency ensures minimal power loss. - Low dropout voltage allows for stable output even with low input voltages. - Wide input voltage range provides versatility in different applications. - Overcurrent and thermal shutdown protection enhance reliability.

Disadvantages: - Limited output current of 500mA may not be sufficient for high-power applications. - Only available in SOT-23-5 package, which may limit its use in certain designs.

Working Principles

The S-1133B12-U5T1U is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage derived from the output. Any difference between the two voltages is amplified and used to control the pass transistor, adjusting its resistance to maintain a constant output voltage.

Detailed Application Field Plans

The S-1133B12-U5T1U is suitable for a wide range of applications, including but not limited to: - Battery-powered devices - Portable electronic devices - IoT (Internet of Things) devices - Wearable devices - Consumer electronics

Detailed and Complete Alternative Models

• S-1133B12-I5T1U: Same specifications and features, but available in an SOT-89-5 package.
• S-1133B12-M5T1U: Same specifications and features, but available in an SOT-25 package.
• S-1133B12-U5T2U: Same specifications and features, but with an output voltage of 1.8V.

These alternative models provide flexibility in terms of package options and output voltage requirements.

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