TPS54331DRG4

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The TPS54331DRG4 is a DC to DC switching regulator typically used in applications that require a compact and power-efficient solution, such as cellular phones and hand-held devices. This step-down switching regulator offers wide input voltage range and has a low quiescent current, making it an ideal choice for applications that require high efficiency and fast transient load response. This device is also configured with an on-chip power device MOSFET, internal high-side tight voltage reference, and an LDO current monitor, making it a reliable, cost-effective and easy-to-use solution for a wide range of applications.

In addition to its low quiescent current, the TPS54331DRG4 offers a wide input voltage range of 7V to 28V, and can deliver up to 3A of output current (temperature dependent) using only a sturdy, low ESR ceramic output capacitor. The device can power-up in less than 4µs, which allows for fast transient applications. The device also provides a power-on reset and a thermal shut-down feature for additional system protection.

The TPS54331DRG4 switching regulator is based on a pulse-width-modulation (PWM) buck topology. The device converts an input voltage to a regulated output voltage at the output stage, cooperating with an external inductor and capacitors. The wide range of input voltage allows the device to be used in almost any system, while the on-chip high-side tight voltage reference ensures accurate voltage regulation of the output voltage. The device also employs pulse-by-pulse current-limit protection, allowing the output load current to be safely limited.

The device also offers a soft-start and tracking feature. The soft-start feature reduces inrush current and allows for power sequencing without causing any overshoot on the output. In addition, the device can be used for tracking applications. For example, the output voltage of one power supply can be programmed to track the output voltage of a second power supply, allowing for system power sequencing.

The TPS54331DRG4 is provided in the SOT-23-5 package and is ideal for space-constrained applications. The device is also configured with an on-chip power-MOSFET, eliminating the need of external power components. Moreover, the device is designed with a low quiescent current to minimize energy-loss in no-load conditions, making it a great option for portable and battery applications.

In conclusion, the TPS54331DRG4, with its wide range of input voltage, 3A of output current, low quiescent current, fast transients and efficient switching regulator architecture, is a reliable, cost-effective and easy-to-use solution for a wide range of applications.

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