S-817A25APF-CUOTFU

Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - Low quiescent current - High ripple rejection ratio - Built-in overcurrent protection - Small package size

Package: SOT-89-5

Essence: The S-817A25APF-CUOTFU is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and stabilize the voltage supply.

Packaging/Quantity: The S-817A25APF-CUOTFU is available in a SOT-89-5 package, which consists of a small plastic body with five leads. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.0V - 6.0V
• Output Voltage: 2.5V
• Dropout Voltage: 0.15V @ 30mA
• Quiescent Current: 40µA
• Ripple Rejection Ratio: 70dB @ 1kHz
• Overcurrent Protection: Built-in
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The S-817A25APF-CUOTFU has a total of five pins arranged as follows:

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Pin 1: VOUT (Output Voltage) Pin 2: GND (Ground) Pin 3: NC (No Connection) Pin 4: VIN (Input Voltage) Pin 5: CE (Control Enable)

Functional Features

• Low Dropout Voltage: The S-817A25APF-CUOTFU exhibits a low dropout voltage, ensuring a stable output voltage even when the input voltage is close to the desired output voltage.
• Low Quiescent Current: With a quiescent current of only 40µA, this voltage regulator minimizes power consumption and extends battery life in portable devices.
• High Ripple Rejection Ratio: The IC provides excellent rejection of high-frequency noise and ripple on the input voltage, resulting in a clean and stable output.
• Built-in Overcurrent Protection: The S-817A25APF-CUOTFU incorporates overcurrent protection, safeguarding the circuit from excessive current flow and preventing damage to the device.
• Small Package Size: The SOT-89-5 package offers a compact form factor, making it suitable for space-constrained applications.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures stable output voltage. - Low quiescent current reduces power consumption. - High ripple rejection ratio provides a clean output signal. - Built-in overcurrent protection enhances circuit safety. - Small package size allows for easy integration into various designs.

Disadvantages: - Limited input voltage range (2.0V - 6.0V). - No connection (NC) pin may require additional attention during PCB layout.

Working Principles

The S-817A25APF-CUOTFU operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. When the input voltage exceeds the desired output voltage, the pass transistor adjusts its resistance to maintain a steady output. Conversely, if the input voltage drops below the desired output voltage, the pass transistor decreases its resistance to compensate and provide a stable output.

Detailed Application Field Plans

The S-817A25APF-CUOTFU finds application in various electronic devices that require a stable voltage supply. Some common application fields include:

1. Battery-Powered Devices: Portable electronic devices such as smartphones, tablets, and wearable gadgets often rely on voltage regulators to ensure stable power supply from the battery.
2. Automotive Electronics: The IC can be used in automotive applications to regulate voltage for sensors, actuators, and other electronic components.
3. Industrial Control Systems: Voltage regulators are essential in industrial control systems to maintain stable power for microcontrollers, sensors, and communication modules.
4. Consumer Electronics: From televisions to audio equipment, voltage regulators play a crucial role in providing consistent power to various consumer electronics.

Detailed and Complete Alternative Models

1. S-817A25APF-CUOTFU: 2.5V output voltage, SOT-89-5 package
2. S-817A33APF-CUOTFU: 3.3V output voltage, SOT-89-5 package
3. S-817A50APF-CUOTFU: 5.0V output voltage, SOT-89-5 package
4. S-817A12APF-CUOTFU