![ACT8311NHADJ-T Allicdata Electronics](https://files.allicdata.com/upload/common/default.jpg)
ACT8311NHADJ-T Integrated Circuits (ICs) |
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Allicdata Part #: | 1488-1017-2-ND |
Manufacturer Part#: |
ACT8311NHADJ-T |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Active-Semi International Inc. |
Short Description: | IC REG BUCK ADJ 1.5A SYNC 8DFN |
More Detail: | Buck Switching Regulator IC Positive Adjustable 1.... |
DataSheet: | ![]() |
Quantity: | 3000 |
Voltage - Input (Max): | 5V |
Supplier Device Package: | 8-TDFN (3x3) |
Package / Case: | 8-WDFN Exposed Pad |
Mounting Type: | Surface Mount |
Operating Temperature: | -40°C ~ 85°C (TA) |
Synchronous Rectifier: | Yes |
Frequency - Switching: | 1.35MHz |
Current - Output: | 1.5A |
Voltage - Output (Max): | 5V |
Voltage - Output (Min/Fixed): | 1.2V |
Series: | -- |
Voltage - Input (Min): | 2.7V |
Number of Outputs: | 1 |
Output Type: | Adjustable |
Topology: | Buck |
Output Configuration: | Positive |
Function: | Step-Down |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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Introduction
ACT8311NHADJ-T is an integrated power management integrated circuit (PMIC) unit that enables users to conveniently generate and manage different output voltages. This PMIC unit is classified under the voltage regulators section of DC DC switching regulators. It has a maximum operating voltage of 5.5 V, with medium switching frequency, continuous short-circuit protection, fast transient response, and overvoltage protection. In this article, we will discuss the application fields and working principle of the ACT8311NHADJ-T in greater detail.
Applications
The ACT8311NHADJ-T is designed to be a versatile and reliable power management unit. Its main application fields include those of a DC DC Buck-Boost power supply, battery charging circuits, and power distribution parametric designs. Its maximum output power rating is 40 W, while its maximum input voltage is 40 V. This power management integrated circuit unit is also fully compatible with Li-Ion/Li-Pol battery charging applications. The ACT8311NHADJ-T also features a wide temperature operating range from -40°C to 85°C, making it suitable for communication systems and other similar devices.
Furthermore, the ACT8311NHADJ-T features a set of protection functions, including an overvoltage protection (OVP) circuit, a short-circuit protection (SCP) circuit, and an active high-side current limit (CL) circuit. These features make the ACT8311NHADJ-T suitable for automotive applications, where low voltage and reliable operation are a must.
Working Principle
The ACT8311NHADJ-T consists of an integrated switching regulator and one or more voltage or current regulation circuits. The switching regulator is responsible for converting input power into a regulated output voltage, while the regulation circuits are responsible for maintaining the output voltage within a given tolerance range. The ACT8311NHADJ-T is based on a buck-boost topology, which allows it to operate with input voltages that are either higher or lower than the desired output voltage.
The working principle of the ACT8311NHADJ-T is based on switching a high-frequency current in and out of the inductor in a controlled manner. Every half-cycle of this switching process is referred to as a switching cycle. During each switching cycle, the input voltage is stepped down or stepped up, depending on the direction of the current, in order to generate the required output voltage. The output voltage is precisely regulated with the help of a feedback circuit and several on-chip comparators.
In addition to voltage regulation, the ACT8311NHADJ-T also features several protection mechanisms that ensure safe operation and long-term reliability. The overvoltage protection (OVP) prevents the output voltage from exceeding its maximum limit, while the short-circuit protection (SCP) shuts down the device if a short circuit is detected. The active high-side current limit (CL) prevents the device from overtaxing its components by limiting the current draw.
Conclusion
In conclusion, the ACT8311NHADJ-T is a versatile and reliable PMIC unit designed to generate and manage different output voltages. It is classified as a voltage regulator in the DC DC switching regulators section and is suitable for a variety of applications, such as DC DC Buck-Boost power supplies, battery charging circuits, and power distribution parametric designs. Its working principle is based on a buck-boost topology that allows it to step down or step up the input voltage, depending on the direction of current flow, in order to generate a regulated output voltage. The ACT8311NHADJ-T also features several protection mechanisms, such as OVP, SCP, and an active high-side current limit, ensuring safe and reliable operation.
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