S-1135D21-U5T1G

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output voltage accuracy - Low quiescent current - Thermal shutdown protection - Overcurrent protection

Package: SOT-23-5

Essence: The S-1135D21-U5T1G is a voltage regulator IC designed to provide a stable output voltage with low dropout voltage. It is commonly used in various electronic devices to regulate and stabilize the voltage supply.

Packaging/Quantity: The S-1135D21-U5T1G is typically packaged in reels or tubes, with a quantity of 3000 units per reel/tube.

Specifications

• Input Voltage Range: 2.5V - 6.0V
• Output Voltage Range: 1.2V - 5.5V
• Dropout Voltage: 200mV @ 100mA
• Quiescent Current: 50µA
• Output Current: 150mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1135D21-U5T1G has a total of five pins arranged as follows:

```

---

| | --| Vout GND|-- --| Vin EN |-- --| NC NC |-- --| NC Vref|-- |___________| ```

1. Vout: Output Voltage Pin
2. GND: Ground Pin
3. Vin: Input Voltage Pin
4. EN: Enable Pin
5. NC: No Connection
6. Vref: Reference Voltage Pin

Functional Features

• Low dropout voltage ensures efficient power conversion even when the input voltage is close to the desired output voltage.
• High output voltage accuracy provides a stable and precise output voltage, minimizing fluctuations in the connected circuitry.
• Low quiescent current reduces power consumption when the regulator is in standby or idle mode.
• Thermal shutdown protection prevents the IC from overheating by shutting down the output when the temperature exceeds a certain threshold.
• Overcurrent protection safeguards the IC and the connected circuitry from excessive current flow, preventing damage.

Advantages and Disadvantages

Advantages: - Efficient voltage regulation with low dropout voltage - Stable and accurate output voltage - Low power consumption in standby mode - Protection features for thermal and overcurrent conditions

Disadvantages: - Limited output current capacity (150mA) - Restricted input voltage range (2.5V - 6.0V)

Working Principles

The S-1135D21-U5T1G operates based on the principle of a linear voltage regulator. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the input and output terminals. The internal circuitry monitors the input voltage, output voltage, and current to ensure stable operation and protect against potential issues such as overheating and overcurrent.

Detailed Application Field Plans

The S-1135D21-U5T1G finds applications in various electronic devices where a stable and regulated voltage supply is required. Some common application fields include:

1. Mobile Devices: Smartphones, tablets, and portable electronic gadgets often utilize voltage regulators to maintain a consistent power supply for their internal components.
2. IoT Devices: Internet of Things (IoT) devices, such as sensors and wireless modules, rely on voltage regulators to ensure reliable operation and extend battery life.
3. Automotive Electronics: Voltage regulators are essential in automotive electronics to provide stable power to various systems, including infotainment, lighting, and control units.
4. Industrial Control Systems: Voltage regulators play a crucial role in industrial control systems, ensuring stable power supply to sensitive components and preventing damage due to voltage fluctuations.

Detailed and Complete Alternative Models

1. S-1135D21-M5T1G
2. S-1135D21-U3T1G
3. S-1135D21-U6T1G
4. S-1135D21-U7T1G
5. S-1135D21-U8T1G

These alternative models offer similar functionality and characteristics to the S-1135D21-U5T1G, providing options for different input/output voltage ranges or package types.

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