TPS72009QDRVRQ1

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TPS72009QDRVRQ1 Application Field and Working Principle

The TPS72009QDRVRQ1 is a low-power, low-noise, 1.3-A low-dropout linear regulator from Texas Instruments. It is part of the company’s TPS7200XX family of ultra-low power regulators, which are optimized for portable, wireless and battery-powered applications. Designed with a 0.8-V to 7.0-V adjustable output voltage and a 1.39-A peak load current capacity, this device is suitable for a variety of applications including post-regulation power supplies, battery backup and industrial applications.

Features

The TPS72009QDRVRQ1 has several features that make it a suitable choice for a variety of applications. These features include the following:

• 0.8 V to 7.0 V adjustable output voltage range
• 1.39 A peak load current capacity
• Ultra-low quiescent current (20 µA)
• Wide range load regulation (±1%)
• Stable with 1-µF ceramic capacitor
• Integrated power-OK (POK) output
• Low-dropout voltage (150 mV)
• Low-power mode (15 µA)
• High EMI and RFI noise immunity
• Compact SOT-23 package

Applications

Due to its low noise, low-dropout voltage, and wide range load regulation, the TPS72009QDRVRQ1 is suitable for a variety of applications. These include post-regulation power supplies, battery backup systems, battery-powered portable devices, and industrial applications.

Working Principle

The TPS72009QDRVRQ1 is a low-dropout linear regulator. This device operates by taking an input voltage and regulating it to the desired output voltage. This is done by the device’s internal circuitry, which includes a pass-transistor, reference voltage, precision resistor, and monitoring and control circuitry.

The reference voltage is used to generate a stable reference voltage, while the pass transistor provides the current-limiting and shutoff functions. The precision resistor provides the necessary voltage-regulation loop and is used to set the output voltage. The monitoring and control circuitry is used to provide the various functions, such as power-good (POK) and low-power mode, which are available to the user.

Conclusion

The TPS72009QDRVRQ1 is a low-power, low-noise linear regulator from Texas Instruments. It is optimized for use in post-regulation power supplies, battery backup systems, battery-powered portable devices, and industrial applications. It operates on the same principle as other linear regulators, by taking an input voltage and regulating it to the desired output voltage. The device features a 0.8-V to 7.0-V adjustable output voltage range, a 1.39-A peak load current capacity, an ultra-low quiescent current of 20 µA, wide range load regulation (±1%), and low-power mode (15 µA).

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