BD35605HFN-TR

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Linear voltage regulators are some of the most important distinctions in the system-on-chip (SoC) power supply design. The BD35605HFN-TR voltage regulator is a good example of such devices. Originally manufactured by ROHM semiconductor (formerly known as Fujitsu Microelectronics), these 6-pin linear regulators are rock-solid devices with a wide range of features and characteristics. In this article, we will take a look at the application field and working principle of the BD35605HFN-TR.

Application Field: The BD35605HFN-TR is suitable for applications requiring reliable, low power consumption and a stable output. It can provide a constant output voltage for portable applications, set-top-boxes, car navigation systems, and a wide range of home appliances. The device is also well suited for power supplies used in industrial systems, medical equipment, and toys.

Working Principle: The BD35605HFN-TR voltage regulator uses a linear regulating method to provide a stable and reliable output voltage. The device works by regularly reducing the input voltage to the required output level. The output voltage is set to the desired level with a reference voltage connected to the REF pin and adjusted with a resistor connected to the ADJ pin. The regulator then maintains the output voltage under load with a low dropout voltage.

When the input voltage is high, the voltage regulator senses this and reduces the output voltage to the preset level, with a maximum dropout of approximately 0.3V. When the input voltage is low, the BD35605HFN-TR can still support sufficient output current with a minimum dropout of typically 0.2V. The device also features a low quiescent current of 20μA, ensuring a low power consumption.

The BD35605HFN-TR has an overload protection feature that triggers when the output current is greater than the specified maximum rated current. The device then automatically shuts down and re-activates when the fault is cleared. Furthermore, the device is equipped with reverse current protection, which prevents external loads from wasting power when the input voltage is too low.

In addition, the BD35605HFN-TR has excellent temperature characteristics and can operate from -40℃ to +85℃. The device also features a transient response of approximately 70µs and a ground-pin current of approximately 25µA, despite the long-term stability of its output voltage. The device is also highly resistant to EMI and ESD, furthering its reliability in the field.

To sum it up, the BD35605HFN-TR is an excellent choice for many applications needing a reliable, low power consumption and stable linear voltage regulator. Its wide range of features make it a cost-effective and robust solution that can be easily integrated into any design.

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