AOZ2254TQI-11: 28V高效同步降压稳压器，轻松驱动10A输出 - CSDN文库

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AOZ2254TQI-11

Rev. 3.0 August 2022 www.aosmd.com Page 4 of 17

Pin Description

Pin Number Pin Name Pin Function

1 PGOOD

Power Good Signal Output. PGOOD is an open-drain output used to indicate the status

of the output voltage. It is internally pulled low when the output voltage is 15% lower than

the nominal regulation voltage for or 20% higher than the nominal regulation voltage.

PGOOD is pulled low during soft-start and shut down.

2FB

Feedback Input. Adjust the output voltage with a resistive voltage-divider between the

regulator’s output and AGND.

3 AGND Analog Ground.

4, 5 NC No Connect.

6 AIN Supply to internal analog function. AIN pin must be connected to IN pins. For noisy

operation, it’s better to have a RC filter from IN to AIN for better noise immunity.

7, 8, 9 IN Supply Input. IN is the regulator input. All IN pins must be connected together.

10, 11, 16, 17, 18 LX Switching Node.

12, 13, 14, 15 PGND Power Ground.

19 EN

Enable Input. The AOZ2254TQI-11 is enabled when EN is pulled high. The device shuts

down when EN is pulled low.

20 BST

Bootstrap Capacitor Connection. The AOZ2254TQI-11 includes an internal bootstrap

diode. Connect an external capacitor between BST and LX as shown in the Typical

Application diagram.

21 VCC

Supply Input for analog functions. Bypass VCC to AGND with a 4.7µF~10µF ceramic

capacitor. Place the capacitor close to VCC pin.

22 SS

Soft-Start Time Setting Pin. Connect a capacitor between SS and AGND to set the

soft-start time.

剩余16页未读，继续阅读

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