BA25F18WHFP-TR

BA25F18WHFP-TR Application Field and Working Principle

BA25F18WHFP-TR is a linear regulator that provides a cost-effective solution in power management and control. It is a single-channel, step-down regulator that can deliver a regulated voltage of up to 18V. This regulator has excellent stability and precision, making it suitable for many applications in battery-powered devices such as notebooks, digital cameras, and PDA/GPS systems.

Features of the BA25F18WHFP-TR

• Input voltage range: 4.5 V to 18 V
• Output voltage range: 0.8 V to 18 V
• Output current: up to 1.5 A
• Output ripple and noise: 90 mV (typical)
• Reverse current protection
• Low dropout voltage: 250 mV (typical at 1 A)
• Short circuit protection

Applications of BA25F18WHFP-TR

The BA25F18WHFP-TR is suitable for applications which require the output voltage to be precisely regulated, such as,

• USB power supply
• Notebook power supply
• Digital camera power supply
• PDA/GPS systems
• Mobile phones
• Portable audio devices
• Portable consoles

Working Principle of the BA25F18WHFP-TR

The BA25F18WHFP-TR is a linear regulator which mainly consists of a transistor, an error amplifier and a temperature sensor. The input voltage is applied to the transistor and is monitored by the error amplifier. When the transistor is turned on, current is allowed to flow and the output voltage is regulated. The temperature sensor is used to protect the regulator from overheating.

The BA25F18WHFP-TR senses the output voltage and compares it to the reference voltage. If the output voltage is above the reference voltage, the transistor is turned off and no current flows from the output of the regulator. Conversely, if the output voltage is below the reference voltage, the transistor is turned on and current flows from the output of the regulator. This causes the output voltage to increase until it reaches the reference voltage, thus regulating it.

In addition to this, the BA25F18WHFP-TR has numerous other features such as over-voltage protection, reverse current protection and short circuit protection to ensure a safe and reliable operation.

Conclusion

The BA25F18WHFP-TR is a linear regulator which is suitable for applications that require precise output voltage regulation. It has a wide input voltage range and can deliver up to 1.5 A of current, making it ideal for portable devices. The regulator also has excellent stability and precision and is protected by various features such as short circuit protection and reverse current protection, allowing it to operate safely and reliably.