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PMIC - Voltage Regulators - Linear

The AS1375-BTDT-30 voltage regulator from STMicroelectronics is a low dropout (LDO), linear voltage regulator with positive voltage output for applications in the telecom, computer, consumer and industrial control markets. This integrated circuit (IC) provides a single, high performance voltage regulator with an adjustable output voltage in the range of 0.8V to 6V. The LDO is capable of delivering up to 1A of output current and it includes a unique digital trimming feature that allows it to be adjusted over a wide range of output voltages.

Application Fields

The AS1375-BTDT-30 is suitable for a wide range of applications including:

• Portable electronic devices using lithium-ion and other low power battery technologies
• PC and other computers
• Industrial control applications
• Consumer electronics such as phones, music players and home entertainment systems
• Telecom systems and base stations

Working Principle

The AS1375-BTDT-30 has an adjustable output voltage in the range of 0.8V to 6V, with a maximum output current of 1A, and it uses a unique digital trimming feature to adjust the output voltage. The device includes an internal amplifier, a voltage regulator, and a low dropout (LDO) linear voltage regulator circuit. A reference voltage is supplied by the other components on the IC, which acts as a reference when measuring the difference between the output voltage and the reference voltage. The amplifier compares the output voltage to the reference voltage and then adjusts the voltage to the desired output voltage.

The AS1375-BTDT-30 also includes an internal thermal protection circuit which turns off the regulator in the case of excessive temperature, as well as an over voltage protection circuit which shuts down the regulator if the output voltage is too high. The device has a feedback pin that can be used to monitor the output voltage and provide an indication when it is out of limits.

Conclusion

The AS1375-BTDT-30 is a low dropout (LDO), linear voltage regulator from STMicroelectronics that provides a single, high performance voltage regulator with an adjustable output voltage in the range of 0.8V to 6V. The device includes an internal amplifier, a voltage regulator, as well as a unique digital trimming feature, and it is suitable for a wide range of applications including consumer electronics, portable devices, industrial control applications, telecom systems and more.

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