BA78M09CP-E2

Product Overview

Category

The BA78M09CP-E2 belongs to the category of voltage regulators.

Use

It is primarily used to regulate and stabilize voltage in electronic circuits.

Characteristics

• Input Voltage Range: 10V - 35V
• Output Voltage: +9V
• Maximum Output Current: 500mA
• Dropout Voltage: 2V (typical)
• Operating Temperature Range: -40°C to +125°C
• Package Type: TO-220
• Mounting Style: Through Hole
• Pin Count: 3
• RoHS Compliant: Yes

Packaging/Quantity

The BA78M09CP-E2 is typically packaged in a tube or reel. The quantity per package varies depending on the manufacturer, but it is commonly available in quantities of 50 or 100 units.

Specifications

• Input Voltage Range: 10V - 35V
• Output Voltage: +9V
• Output Current: Up to 500mA
• Dropout Voltage: 2V (typical)
• Line Regulation: ±0.2%
• Load Regulation: ±1%
• Ripple Rejection Ratio: 60dB (typical)
• Quiescent Current: 5mA (typical)
• Thermal Shutdown Protection: Yes
• Short Circuit Protection: Yes

Detailed Pin Configuration

The BA78M09CP-E2 has three pins:

1. Input (Vin): This pin is connected to the input voltage source.
2. Ground (GND): This pin is connected to the ground reference.
3. Output (Vout): This pin provides the regulated output voltage.

Functional Features

• Voltage Regulation: The BA78M09CP-E2 ensures a stable output voltage of +9V regardless of variations in the input voltage.
• Thermal Shutdown Protection: It incorporates a thermal shutdown mechanism that protects the device from overheating.
• Short Circuit Protection: The regulator is designed to withstand short circuits without damage.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for flexibility in various applications.
• High ripple rejection ratio ensures a clean output voltage.
• Thermal shutdown protection prevents damage due to excessive heat.
• Short circuit protection enhances the reliability of the device.

Disadvantages

• Dropout voltage of 2V may limit its use in low voltage applications.
• Maximum output current of 500mA may not be sufficient for high-power applications.

Working Principles

The BA78M09CP-E2 is a linear voltage regulator that uses a series pass transistor to regulate the output voltage. It operates by comparing the output voltage with a reference voltage and adjusting the pass transistor accordingly to maintain a constant output voltage.

Detailed Application Field Plans

The BA78M09CP-E2 finds applications in various electronic devices and systems, including but not limited to: - Power supplies - Audio amplifiers - Industrial control systems - Automotive electronics - Battery charging circuits

Detailed and Complete Alternative Models

• LM7809: This is a popular alternative model from Texas Instruments.
• MC7809: Another alternative model offered by ON Semiconductor.
• L78M09CV: A similar voltage regulator from STMicroelectronics.

These alternative models offer similar specifications and functionality to the BA78M09CP-E2 and can be used as replacements depending on availability and specific requirements.

In conclusion, the BA78M09CP-E2 is a voltage regulator that provides stable +9V output voltage. It offers advantages such as wide input voltage range, thermal shutdown protection, and short circuit protection. However, it has limitations in terms of dropout voltage and maximum output current. It finds applications in various electronic systems and has alternative models available from different manufacturers.