TPS7B4250EVM

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Evaluation Boards - Linear Voltage Regulators are an essential part of system design, enabling designers to configure and test the performance of voltage regulators in their applications. The TPS7B4250EVM Evaluation Board from Texas Instruments is no exception. This board is a quick-and-easy way to check out the performance of the TPS7B4250 low dropout (LDO) linear voltage regulator.

This board consists of a TPS7B4250EVM and power management IC, plus four additional external components – two surface-mounted resistors, an input capacitor, and an output capacitor. With this setup, the TPS7B4250EVM enables designers to configure the TPS7B4250’s output voltage from 0.825V to 5V, allowing for testing from various output voltage points. A voltage monitoring circuit is also integrated to alert users to reset at the end of a pre-defined voltage window, preventing IC damage from accidental overvoltage.

In addition to voltage monitoring, the TPS7B4250EVM also houses some other features that make it an ideal choice for low-power applications. This includes a 20µA typical quiescent current; fast transient response; and a built-in thermal monitoring circuit. It also provides low output noise, minimizing the need for noise-reduction subsequent downstream in the system. The TPS7B4250EVM is designed for use in automotive, medical, consumer and industrial applications.

The operating principle of the TPS7B4250EVM is based on the transfer of power from the input to the output. To achieve this, the circuit design implements an error amplifier that compares the output voltage with an internally generated reference voltage. If the output voltage is high, the error amplifier will lower the gate voltage of the regulator’s pass transistor, thus allowing current to flow from the input to the output and bringing the output voltage back to the desired value. Conversely, if the output voltage is low, the gate voltage of the pass transistor is increased, preventing current from flowing and bringing the output voltage up to the specified voltage level.

This TPS7B4250EVM evaluation board is just one of many Linear Voltage Regulator boards offered by Texas Instruments. Using this board, designers can quickly and easily configure the TPS7B4250 to test the performance of the low dropout linear voltage regulator in their applications. With the range of features and performance offered by this linear voltage regulator, it\'s no wonder why it has become so popular with developers of low-power applications.

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