TPS7333QDRG4

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TPS7333QDRG4 is a linear voltage regulator from Texas Instruments (TI). Its optimized design provides exceptional accuracy and eliminates the need for external trimming in most applications. It is a low-dropout (LDO) regulator providing up to 1A of output current and controlled output voltage from 0.6V to 4.7V. The device features an on-off control with an active high shutdown logic input and provides ripple rejection of up to 70 dB and fast transient response.

The primary application of the TPS7333QDRG4 is system-level power management, optimizing power conversion efficiency in various low-power applications such as LED displays, personal computers, and consumer electronics devices. Other applications include automotive, industrial, and wireless communication.

The TPS7333QDRG4 is designed to provide voltage regulation with very few external components. It is a monolithic integrated circuit using a three-terminal regulator architecture and an integrated P-channel MOSFET pass device. The TPS7333QDRG4 has an internal bandgap reference and an internal error amplifier. The reference voltage is adjustable by varying an external resistive divider, allowing for precise regulation of the output voltage.

The TPS7333QDRG4 includes a logic-controlled enable/shutdown input that is active high. When the enable input (EN) is powered at 0.8V, the regulator is enabled. When the enable input is powered off or driven low, the regulator is in shutdown mode and draws only 2μA of quiescent current. The TPS7333QDRG4 also has a protect mode feature that turns off the regulator when its output voltage drops below its specified under-voltage lockout (UVLO) level or if its input is driven above its specified over-voltage lockout (OVLO) level.

The TPS7333QDRG4 provides over-current protection using an internal current limit circuit with a foldback current limited output. In case of an extreme overload, such as a short circuit, the device limits its output current to a preset value and automatically recovers when the fault is removed. The protection circuit also includes brief over-temperature shutdown that halts the device when its junction temperature exceeds the absolute maximum temperature.

In summary, the TPS7133QDRG4 is a linear voltage regulator from TI that offers a wide range of output voltages and a large output current. The device provides fast transient response and excellent ripple rejection, making it ideal for low-power applications. This device also offers a wide selection of protection features, providing power breakdown and fault protection.

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