SI7201-B-04-IVR

Product Overview

Category

The SI7201-B-04-IVR belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators subcategory.

Use

This product is primarily used for voltage regulation in electronic circuits, ensuring a stable and reliable power supply for various applications.

Characteristics

• Input Voltage Range: 4.5V to 18V
• Output Voltage: 3.3V
• Maximum Output Current: 500mA
• Low Dropout Voltage: 300mV at 500mA
• Low Quiescent Current: 75µA
• Thermal Shutdown Protection
• Small Package Size: 5-Pin TSOT23

Package

The SI7201-B-04-IVR is available in a small 5-pin TSOT23 package, which offers compactness and ease of integration into circuit designs.

Essence

The essence of this product lies in its ability to efficiently regulate voltage with minimal power loss, making it suitable for battery-powered and low-power applications.

Packaging/Quantity

The SI7201-B-04-IVR is typically supplied in tape and reel packaging, with quantities varying based on the supplier and customer requirements.

Specifications

• Input Voltage Range: 4.5V to 18V
• Output Voltage: 3.3V ±2%
• Output Current: Up to 500mA
• Dropout Voltage: 300mV at 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 125°C
• Package Type: 5-Pin TSOT23

Detailed Pin Configuration

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

Functional Features

• Voltage Regulation: Provides a stable 3.3V output voltage from a wide input voltage range.
• Low Dropout: Maintains regulation even when the input voltage is only slightly higher than the output voltage.
• Low Quiescent Current: Minimizes power consumption in standby or idle modes.
• Thermal Shutdown Protection: Safeguards the IC from overheating.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation
• Low dropout voltage
• Compact package size
• Low quiescent current for power savings

Disadvantages

• Limited maximum output current compared to some other voltage regulators
• Requires careful thermal management in high-power applications

Working Principles

The SI7201-B-04-IVR utilizes a feedback control mechanism to maintain the output voltage at 3.3V regardless of variations in the input voltage. It achieves this through internal circuitry that adjusts the output based on the comparison between the actual output voltage and a reference voltage.

Detailed Application Field Plans

Battery-Powered Devices

The low dropout voltage and quiescent current make the SI7201-B-04-IVR ideal for use in portable electronics powered by batteries, such as handheld devices and IoT sensors.

Low-Power Embedded Systems

In applications where power efficiency is crucial, such as microcontroller-based systems and sensor nodes, this voltage regulator ensures stable power delivery without excessive energy consumption.

Automotive Electronics

With its wide input voltage range and thermal protection, the SI7201-B-04-IVR can be employed in automotive electronics for regulating power supply in various vehicle systems.

Detailed and Complete Alternative Models

• SI7201-B-03-IVR: Similar specifications but with a 3.0V output voltage
• LM1117: A popular alternative with higher output current capability
• MCP1700: Offers lower quiescent current for ultra-low-power applications

In conclusion, the SI7201-B-04-IVR is a versatile voltage regulator with specific advantages in low-power and battery-operated applications. Its compact size and efficient performance make it a valuable component in modern electronic designs.

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