TPS7330QPWR

The Texas Instruments TPS7330QPWR is a device designed to regulate supply voltage. It is a four-terminal low-dropout (LDO) linear voltage regulator with an input voltage range from 2.2V to 6.5V, providing up to 600mA of maximum output current and adjustable output voltage. The device typically supports up to 1.8V output voltage, making it ideal for applications that require a regulated voltage above the nominal 1.8V system supply.

Features

The TPS7330QPWR is a CMOS-based linear regulator featuring a wide supply range and high output current capability. Key features of the TPS7330QPWR include:

• High-accuracy output voltage, typically ±1.75%
• Low quiescent current, typically 2mA
• Low-dropout voltage, typically 0.35V at 600mA
• Low noise output, typically 6.5uA
• Shutdown current, typically 0.5uA
• High output current up to 600mA

Application Field

The TPS7330QPWR can be used in a variety of applications due to its wide input and output voltage ranges, low noise output and high output current capability. The device is particularly suitable for applications requiring extremely low quiescent current and very low dropout voltage at low loads, such as portable electronics and handheld devices.

• Portable electronic devices
• Handheld and Wearable electronics
• Cameras, cell phones, and similar electronics
• Battery-powered applications
• Digital video cameras
• Telecommunications

Working Principle

The TPS7330QPWR is a four-terminal linear regulator with an adjustable output voltage. The device is built using CMOS process technology and contains an error amplifier, a P-channel PMOS transistor and an N-channel NMOS transistor as the pass elements to regulate the output voltage. It also includes protection against current overload and short circuit operation.

The input voltage is applied to the input pin and the output voltage is supplied to the output pin. The device regulates the output voltage through the following 3 steps:

1. The input voltage is compared to an internal reference by the error amplifier, whose output varies with the difference between the two.
2. The output of the error amplifier is then used to control the gate voltage of the pass transistor, thus controlling the output voltage.
3. The output voltage is monitored by the Feedback pin, which adjusts the gate voltage of the pass transistor to keep the output voltage constant.

In addition, the device also includes over-current and short circuit protection, which cuts off the transistor when the current limit is exceeded. This protects the device from damage due to excessive current.

Conclusion

The TPS7330QPWR is a linear voltage regulator with an adjustable output voltage and high output current capability. Its wide supply range, safety features and low quiescent current make it ideal for portable electronics devices and other applications requiring low noise output, low dropout and high output current.