Topology:	Boost
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	2.7V
Voltage - Input (Max):	5.5V
Voltage - Output (Min/Fixed):	2.7V
Voltage - Output (Max):	24V
Current - Output:	2A (Switch)
Frequency - Switching:	600kHz, 1.2MHz
Synchronous Rectifier:	No
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	10-WFDFN Exposed Pad
Supplier Device Package:	10-DFN (3x3)
Series:	EZBoost
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Up
Output Configuration:	Positive

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AOZ1905DI Application Field and Working Principle

Introduction

AOZ1905DI is a DC-DC switching regulator designed to maintain a stable voltage in power systems. It is a 3A single-phase synchronous rectifier with a low quiescent current and high efficiency in order to maximize power savings. The device also offers a wide operating temperature range and can support up to 1.0MHz switching frequency, further increasing efficiency.AOZ1905DI is suitable for various applications from IoT, wearables, and Sensor nodes to automotive, LED driver systems, and power supplies.

Application Field

IoT, Wearables and Sensor Nodes:The AOZ1905DI’s high efficiency and low quiescent current make it capable of driving and powering small and low power IoT devices which are used in wearables and sensor nodes. The flexibility of the device allows it to be operated from various input voltages and provides selectable output voltages in order to customize solutions for different types of systems.Automotive and Industrial Applications:The AOZ1905DI can also be used in automotive and industrial applications. Thanks to its wide operating temperature range, it can help to maintain the desired voltage without needing to maintain the environment at a high temperature. In addition, the device has over current and over temperature protection, making it suitable for applications which may require safety and reliability, such as automotive applications.Power Supplies and LED Drivers:The AOZ1905DI can also be used in 12V, 24V, and 48V power supplies, power distribution systems, and LED driver applications. The device can offer up to 3A of output current at higher output voltages in order to drive higher current systems.

Working Principle

The AOZ1905DI is a synchronous rectifier Buck-Boost DC-DC switching regulator. It is a synchronous rectifier, meaning that it uses both the positive and negative parts of the input voltage waveform. This results in higher efficiency as compared to a traditional linear regulator as the input current is only switched ON or OFF in response to the input voltage.The AOZ1905DI uses PWM (Pulse Width Modulation) to control the output voltage. The output voltage is determined by the ratio of the input voltage and the output voltage. The PWM signal is used to modulate the output voltage, and the modulated signal is then used to turn the switching transistors ON or OFF.The operating frequency of the device can be adjusted to maximize efficiency. The AOZ1905DI supports switching frequencies up to 1.0MHz and can be configured to work with either synchronous or asynchronous rectification.In addition to its synchronous rectification, the AOZ1905DI also has over current and over temperature protection for safer operation. This helps to ensure that the device does not operate outside of its safe operating range and maintains reliable operation.

Conclusion

The AOZ1905DI is an efficient DC-DC switching regulator with a low quiescent current and wide operating temperature range. This makes it suitable for a wide range of applications from IoT and wearables to automotive and industrial applications. The AOZ1905DI uses synchronous rectification for improved efficiency and supports PWM for a wide range of output voltages. The additional protection features make it a reliable and safe device for applications which require higher levels of safety and reliability.

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