LP38693SDX-3.3

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LP38693SDX-3.3 Application Field and Working Principle

The LP38693SDX-3.3 is a 3-terminal adjustable low-dropout (LDO) linear voltage regulator IC. This regulator IC provides up to 80 mA output current and features very low dropout voltage, allowing higher output voltages to be provided in space-restricted applications. The device is available in 3-lead TO-220 and 3-lead chip packages. It has an absolute maximum input voltage of 6V.

LP38693SDX-3.3 is used in power source and voltage conversion fields. It is well suited for low-noise, high current mobile applications and low noise, low power AC-DC converters. The linear voltage regulator also finds applications in automotive electronics, computers, modems, ATMs, instrumentation, telecommunication and other applications requiring high power source stability and a low-noise drive in the power range of 3.3V to 5.5V.

Working Principle

The LPO38693SDX-3.3 linear voltage regulator works by allowing a current flow from the input voltage, called the load current, through an internal resistor, and dropping a certain amount of voltage across the resistor. This voltage is equal to V(out) - V(in) and is called Dropout (Vdo). This voltage drop across the load is then compared to a fourth terminal, the adjustment terminal (Vadj), the voltage of which is determined by an external resistance circuit.

The output voltage (Vout) is then calculated by subtracting the voltage at the adjustment terminal, Vadj, from the input voltage, Vin, and adding on the dropout voltage, Vdo. This equation reads as: Vout = Vin - Vadj + Vdo.

The advantage of this voltage regulator IC is that its output voltage is directly proportional to the input voltage, and is furthermore adjustable with the use of external resistors. This results in a high degree of flexibility and accuracy in determining the desired output voltage for your specific application.

Features

• Input voltage range &minus 3.2 V to 6 V
• Output voltage precision better than ±2.2%
• Highly-accurate and programmable output voltage
• Operates in an ambient temperature range of &minus 40 °C to +85 °C
• Low-ripple, low-noise operation
• Low dropout voltage (only 25 mV at 5 V output voltage)
• Integrated over-temperature and short-circuit protection
• 80 mA output current capability
• Very low quiescent current of only 0.5 mA
• Available in 3-lead TO-220 and 3-lead chip packages

Applications

The LP38693SDX-3.3 linear voltage regulator is suitable for a wide range of applications, including power source and voltage conversion. It is well suited for low-noise, high current mobile applications and low noise, low power AC-DC converters. The device also finds a wide range of applications in automotive electronics, computers, modems, ATMs, instrumentation, telecommunication, and other applications requiring high power source stability and a low-noise drive in the power range of 3.3V to 5.5V.

Conclusion

The LP38693SDX-3.3 linear voltage regulator is a versatile and reliable device that is easy to use and provides exceptional performance. With its adjustable output voltage, low dropout voltage, high output current capabilities and low noise, it is the ideal choice for applications that require precise and stable power supplies. It is also an excellent choice for automotive, instrumentation, and industrial applications.

The specific data is subject to PDF, and the above content is for reference