ACT8865
Power management ICs with multiple buck and LDO regulators
Manufacturer： active-semi
series introduction
# ACT8865 Product Series Introduction
## Overview
The ACT8865 product series represents a cutting - edge line of power management integrated circuits (PMICs) designed to meet the diverse and demanding power requirements of modern electronic devices. With a focus on high efficiency, compact design, and advanced functionality, the ACT8865 series is an ideal solution for a wide range of applications, from portable consumer electronics to industrial and automotive systems.
## Key Features
### High - Efficiency Power Conversion
- **Multiple Voltage Regulators**: The ACT8865 series incorporates multiple high - efficiency step - down DC - DC converters. These regulators are capable of delivering high output currents with low dropout voltages, ensuring stable and efficient power supply to different components of the system. For example, they can efficiently convert a higher input voltage (such as a battery voltage) to the lower voltages required by processors, memory modules, and other sensitive electronic components.
- **Low Quiescent Current**: In standby or low - power modes, the PMICs in the ACT8865 series consume extremely low quiescent current. This feature is crucial for battery - powered devices as it helps to extend the battery life significantly. Even when the device is in a dormant state, the power consumption is minimized, allowing for longer periods between charges.
### Advanced Power Management
- **Power Sequencing**: The ACT8865 series offers precise power sequencing capabilities. This is essential for ensuring that different components in a system are powered up and down in the correct order. For instance, in a complex system with a processor, memory, and other peripherals, proper power sequencing prevents data corruption and component damage during startup and shutdown processes.
- **Power Good Indicators**: Each voltage regulator in the series is equipped with power good indicators. These indicators provide real - time feedback on the status of the output voltage, allowing the system to monitor the power supply and take appropriate actions in case of voltage fluctuations or faults.
### Compact Design
- **Small Form Factor**: The ACT8865 PMICs are designed in a compact package, making them suitable for space - constrained applications. Their small size allows for easy integration into portable devices such as smartphones, tablets, and wearables, where board space is at a premium.
- **Integrated Functions**: By integrating multiple power management functions into a single chip, the ACT8865 series reduces the need for external components. This not only saves board space but also simplifies the overall system design, reducing the bill of materials and manufacturing costs.
### Protection Features
- **Over - Voltage Protection (OVP)**: The ACT8865 series includes built - in over - voltage protection circuits. These circuits monitor the output voltage and automatically shut down the regulator if the voltage exceeds a predefined safe level. This protects the connected components from damage due to excessive voltage.
- **Over - Current Protection (OCP)**: Similarly, over - current protection is implemented to safeguard the system from excessive current flow. If the output current exceeds a certain threshold, the regulator will limit the current or shut down to prevent overheating and component failure.
- **Thermal Shutdown**: To prevent overheating, the PMICs in the ACT8865 series are equipped with thermal shutdown protection. When the temperature of the chip rises above a safe operating limit, the device will automatically shut down until the temperature returns to a normal range.
## Applications
### Consumer Electronics
- **Smartphones and Tablets**: The ACT8865 series is well - suited for smartphones and tablets, where efficient power management is crucial for long battery life and optimal performance. It can power the processor, display, memory, and other components, ensuring stable operation even under heavy usage.
- **Wearable Devices**: In wearable devices such as smartwatches and fitness trackers, the compact size
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