TPS73433DRVT

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TPS73433DRVT is a type of linear voltage regulator (PMIC - Voltage Regulator - Linear category) that combines the features of a low profile (1.3 mm maximum), low dropout, high efficiency, and low quiescent current. It includes a power supply On/Off control, enabling power sequencing and inrush current limiting.

This PMIC - Voltage Regulator - Linear serves for a wide range of application areas. It is suitable for portable instruments, battery-based systems, as a secondary regulator for hot-swap power applications, 3.3 V output bus regulators, and sensor, audio and automotive systems. It also can be used for 1.8 V systems, extended voltage range from 1.5 V to 5.5 V, 3 A output current capability and is co-packaged in 2 mm x 2 mm WLCSP.

The working principle for TPS73433DRVT linear voltage regulator is that the device integrates a high-end pass transistor and two error amplifiers, to achieve a tight maximum output voltage accuracy of up to 50 mV. This error amplifier is also used to provide On/Off control logic circuitry. By setting proper open state and low state logic level to this On/Off pin, it can adjust output voltage of the device and entering On/Off state.

The pass transistor is a single P-channel enhancement-mode MOSFET, and it is the downstream element of the voltage loop regulating the output voltage. The internal error amplifier bias current can be adjusted with a capacitor connected between the BIAS pin and an external voltage reference, or an external source.

The linear voltage regulator TPS73433DRVT is ensured to provide good limitation performance from line transients and power supply noise, with a current limit foldback to reduce external MOSFET power dissipation at high loads. In case of accidental output current over-load, the power dissipation for the external MOSFET is reduced. Additionally, a supply current limit circuit shuts down the output voltage until the fault condition is removed.

Overall, TPS73433DRVT linear voltage regulator is designed to provide high performance in miniature package form factor. It provides both high efficiency and high reliability capabilities to its application areas, with a minimum board space occupation. This device eliminates the need for additional subcircuitry, to simplify the design process.

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