S-1333A19-A4T2U3

Basic Information Overview

Category: Electronic Component
Use: Voltage Regulator
Characteristics: High precision, low dropout voltage, small package size
Package: SOT-23-5
Essence: Regulates input voltage to a stable output voltage
Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.0V
• Dropout Voltage: 200mV (typical)
• Output Current: 100mA (maximum)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.1% (typical)
• Quiescent Current: 30µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-1333A19-A4T2U3 has a total of five pins arranged as follows:

```

---

| | --| Vout GND |-- Pin 1 --| Vin NC |-- Pin 2 --| EN Vref |-- Pin 3 --| Bypass NC |-- Pin 4 --| FB NC |-- Pin 5 |___________| ```

Pin 1: Vout - Output Voltage
Pin 2: Vin - Input Voltage
Pin 3: EN - Enable Pin
Pin 4: Bypass - Bypass Capacitor Connection
Pin 5: FB - Feedback Pin

Functional Features

• High precision voltage regulation
• Low dropout voltage for efficient power conversion
• Small package size for space-constrained applications
• Enable pin for easy on/off control
• Bypass capacitor connection for improved stability
• Feedback pin for adjustable output voltage

Advantages and Disadvantages

Advantages: - High precision regulation ensures stable output voltage - Low dropout voltage minimizes power loss - Small package size allows for compact designs - Enable pin provides convenient control - Bypass capacitor connection enhances stability - Adjustable output voltage through feedback pin

Disadvantages: - Limited output current (100mA maximum) - Narrow input voltage range (2.5V to 6.0V)

Working Principles

The S-1333A19-A4T2U3 is a voltage regulator that takes an input voltage within the range of 2.5V to 6.0V and regulates it to a stable output voltage between 1.2V and 5.0V. It achieves this by utilizing a precision reference voltage (Vref) and feedback mechanism.

When the enable pin (EN) is high, the regulator operates and maintains the output voltage at the desired level. The bypass capacitor connected to the Bypass pin helps stabilize the output voltage by filtering out noise and providing additional current when needed.

The feedback pin (FB) allows for adjustable output voltage by connecting external resistors or a potentiometer. This feature enables customization according to specific application requirements.

Detailed Application Field Plans

The S-1333A19-A4T2U3 finds applications in various electronic devices where precise voltage regulation is crucial. Some potential application fields include:

1. Battery-powered portable devices: Ensures stable voltage supply to sensitive components such as microcontrollers, sensors, and display modules.
2. IoT devices: Provides reliable voltage regulation for wireless communication modules, sensors, and low-power processors.
3. Wearable electronics: Enables consistent power delivery to wearable devices like smartwatches, fitness trackers, and medical monitoring devices.
4. Automotive electronics: Supports voltage regulation in automotive systems, including infotainment systems, lighting modules, and control units.
5. Industrial automation: Facilitates stable voltage supply to control circuits, sensors, and actuators in industrial machinery and equipment.

Detailed and Complete Alternative Models

1. S-1333B19-A4T2U3: Similar to S-1333A19-A4T2U3 but with extended input voltage range (up to 12V).
2. S-1333C19-A4T2U3: Higher output current variant (up to 500mA) with the same pin configuration and package size.
3. S-1333A20-A4T2U3: Offers a wider output voltage range (0.8V to 6.0V) while maintaining similar specifications.

These alternative models provide flexibility in choosing the most suitable voltage regulator based on specific application requirements.

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