RAA230404GFT#BA0

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Introduction to RAA230404GFT#BA0 Application Field and Working Principle

RAA230404GFT#BA0 is a part of PMIC ( Power Management ICs ) – Voltage Regulators – Linear + Switching. It is an integrated switching/linear voltage regulator. It can provide a regulated output voltage for a wide input voltage range. This device can also be used for intermediate bus converters and general purpose power supplies. Its low quiescent current and excellent line and load transient performance make it ideal for high power PSU applications. In addition, it is a fully integrated linear regulator offering fast load transient response, low noise and excellent load regulation.

Features

• Operating input voltage range of 6.5 to 20V
• Output current of up to 1.5 Amps
• Fast load transient response
• Quiescent current of 12.5mA
• Output noise in 10kHz bandwidth of 0.9mVrms (typ)
• External compensation network option for easier tuning
• Fixed output voltage of 5.0V
• Power good indicator
• Excellent line and load regulation

Applications

• Low power AC/DC power supplies
• DC/DC converters
• General purpose power supplies
• Power conditioning applications

Working Principle

This device is based on a linear regulator architecture. The incoming power supply is fed to the device and a control loop is formed to regulate the output voltage. An internal current source sets a reference voltage on the output pin that the voltage at the inverting input of the error amplifier needs to exceed for the pass-transistor to be enabled. The output voltage is regulated by varying the duty cycle that this pass transistor is switched on.

Conclusion

RAA230404GFT#BA0 is an excellent choice for low power AC/DC and DC/DC power supplies, high power PSU applications, and general purpose power supplies. This device provides excellent line and load regulation and fast load transient response. It also has a low quiescent current, making it very energy efficient.

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