S-817A42APF-CVFTFG

Basic Information Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - Low quiescent current - High ripple rejection ratio - Built-in overcurrent protection - Built-in thermal shutdown circuit

Package: SOT-89-5

Essence: The S-817A42APF-CVFTFG is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.0V to 6.0V
• Output Voltage: 4.2V
• Output Current: 50mA
• Dropout Voltage: 160mV (typical)
• Quiescent Current: 1.0µA (typical)
• Ripple Rejection Ratio: 70dB (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The S-817A42APF-CVFTFG has the following pin configuration:

1. VOUT: Output Voltage
2. GND: Ground
3. VIN: Input Voltage
4. CE: Chip Enable
5. NC: No Connection

Functional Features

• Low dropout voltage ensures stable output even with small input-output voltage differentials.
• Low quiescent current minimizes power consumption in standby mode.
• High ripple rejection ratio reduces noise interference from the input power supply.
• Built-in overcurrent protection safeguards the IC and connected devices from excessive current.
• Built-in thermal shutdown circuit prevents overheating of the IC.

Advantages and Disadvantages

Advantages: - Stable output voltage - Low power consumption - Noise reduction - Overcurrent protection - Thermal shutdown protection

Disadvantages: - Limited output current (50mA)

Working Principles

The S-817A42APF-CVFTFG is a linear voltage regulator that uses a PNP transistor as the pass element. It regulates the output voltage by adjusting the resistance between the input and output terminals. The IC compares the output voltage with a reference voltage and adjusts the pass element accordingly to maintain a stable output.

Detailed Application Field Plans

The S-817A42APF-CVFTFG is commonly used in various electronic devices that require a stable 4.2V power supply. Some typical applications include: - Battery-powered devices - Portable audio players - Digital cameras - Wireless communication modules - Industrial control systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as replacements for the S-817A42APF-CVFTFG are:

1. S-817A42ANB-CVFTFG

   • Output Voltage: 4.2V
   • Output Current: 50mA
   • Package: SOT-89-5

2. S-817A42ANB-DRTT2G

   • Output Voltage: 4.2V
   • Output Current: 50mA
   • Package: SOT-23-5

3. S-817A42ANB-CUFTFG

   • Output Voltage: 4.2V
   • Output Current: 50mA
   • Package: SOT-323-5

These alternative models offer similar specifications and functionality, providing flexibility in design choices.

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