LMS8117ADTX-ADJ/NOPB

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PMIC - Voltage Regulators - Linear

The LMS8117 series Linear Voltage Regulator from Texas Instruments is a bipolar device designed to deliver a reliable and cost-effective voltage regulation solution. It is designed to operate from an input voltage in the range of 8 V to 18 V and can provide up to 250 mA output current. With an internal power MOSFET, it provides a fast response and stable regulation performance. The LMS8117 also provides a very low output noise which is normally required in sensitive analog applications.

LMS8117ADTX-ADJ/NOPB is a 4.5 V - 16.8 V adjustable voltage regulator with active output voltage tracking. This device uses a sense element located at the output terminal, together with the Nfb pin, to regulate the output voltage to a programmed value. It enables a short response time and high line and load regulation in a wide range of applications.

Application Fields

The LMS8117 is ideal for automotive, consumer, and industrial systems. Some of its application fields are:

• Portable electronics
• Battery-powered products
• Industrial process control
• High-end consumer electronics
• Automotive with wide temperature range

Working Principle

The LMS8117ADTX-ADJ/NOPB comes with an integrated power MOSFET and a sense element at the output terminal that is used to regulate the output voltage to the programmed value. The sensing voltage is scaled proportionally by an external resistor connected from the Sense (SNS) element at the output terminal to the Nfb pin. This scaling sets the open-loop gain and allows for good line and load regulation over a wide temperature range.

The internal power MOSFET provides fast over-current protection and a quick response time to changes in load and line conditions. The MOSFET also provides short-circuit protection by disconnecting the load from the input supply if the input voltage falls below the Internal Voltage Undervoltage Lockout (UVLO) threshold.

The LMS8117 delivers low noise performance across a wide input voltage range, making it suitable for use in analog systems. It also includes a shutdown pin (SHUTDOWN) which can be used to disable the output when necessary.

Conclusion

The LMS8117ADTX-ADJ/NOPB is a reliable and cost-effective voltage regulator solution suitable for a wide range of applications. With its internal power MOSFET, fast response time, low output noise and short-circuit protection, it is the ideal solution for portable electronics, consumer electronics, industrial process control and more.

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