TPS77525PWPRG4

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TPS77525PWPRG4

The TPS775xx family of voltage regulators represent the newest generation of super-low noise, high power LDO (Low DropOut) regulators using CMOS production that yields excellent line and load regulation. The TPS77525PWPRG4 is a 500mA LDO voltage regulator. It offers 500mA output current with excellent line transient response and low noise characteristics. The TPS775xx family consists of 10 devices offering output voltages from 0.6V to 3.3V.

Application Field

The TPS77525PWPRG4 is suitable for a wide range of general-purpose power management applications such as industrial, consumer, and computing. It is ideal for post-regulator applications, battery applications, secondary side regulation, and for design which requires less output current. It also takes a wide input voltage range from 2.5V to 16V, thus making it suitable for most applications.

The TPS77525PWPRG4 offers a enable pin that can be used to enable and disable the device through an external signal. The EN pin is designed to have a fully logic compatible output, as well as a logic-level enable/disable feature that allows full control over power up/down sequencing. This feature makes the TPS77525PWPRG4 suitable for a wide range of applications such as post regulator, secondary side regulation, and for designs that require less output current.

The TPS77525PWPRG4 features precise output voltage accuracy and low dropout over an extended temperature range, enabling the design of stable wide input voltage powered circuits. It also features current limit protection, short-circuit protection and thermal shutdown protection, making it very robust in operation.

Working Principle

The working principle of the TPS77525PWPRG4 is based on its internal architecture, which consists of a P-Channel MOSFET, a pre-regulator and an error amplifier. The input voltage is applied to the gate of the P-Channel MOSFET, which along with the current-limiting resistor set the pre-regulator output. The error amplifier monitors the output voltage and compares it to a reference voltage, adjusting the gate voltage of the P-Channel MOSFET until the output voltage matches the reference voltage. This results in a precise voltage output.

The TPS77525PWPRG4 offers excellent load transient response. This feature provides excellent load and line regulation, enabling the design of power circuits with wide input voltage range and stable performance over a wide operating temperature range. The TPS77525PWPRG4 has a power dissipation of 0.3W and is thermally protected to operate over an extended temperature range. It efficiently dissipates most of the heat generated, providing long life and stable operation.

The TPS775xx family of voltage regulators offer low dropout, low noise, high power capability and precise output voltage accuracy over an extended temperature range, making them suitable for a wide range of general-purpose power management applications.

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