TPS7101QPWR

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The TPS7101QPWR is a low-dropout (LDO) linear regulator that belongs to the family of PMIC, Voltage Regulators and Linear. This regulator is able to provide an output current up to 500mA and thus is suitable for a variety of applications with multiple power supply solutions.

The application fields are diverse, such as digital cameras and TVs, PDAs and GSM modules, where a single-cell battery is usually used as the main power supply, and the output voltage need to be adjusted for proper system control and operation. The compact SOT223-5 package is also suitable for applications that require high noise immunity and low-cost implementation.

The working principle of the TPS7101QPWR is based on the standard LDO technology. The regulator features a PNP pass transistor that is driven by an internal error amplifier. The pass transistor is connected between the input and output and a feedback pin is connected to the error amplifier. The current source that is connected between the reference pin and the pass transistor provides bias current to the error amplifier.

This technique of using a PNP pass transistor and an internal error amplifier provides a very tight and stable output voltage over a wide range of load conditions. The resistor-programmed feature allows the output voltage to be adjusted between 3.3V to 5.5V. The regulator is also protected by thermal shutdown, overtemperature protection and current-limiting for extra protection.

The wide range of input voltage and output voltage makes the TPS7101QPWR not just suitable for applications with a single-cell battery but also for multi-supply solutions. The output capacity makes it suitable for a multitude of applications. This device is also easy to use and implement in the circuit, with very low noise and good stability. All these characteristics make the TPS7101QPWR a good choice for most applications with varying power requirements.

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