LTC3407EMSE#TRPBF Datasheet/PDFPMIC - Voltage Regulators - DC DC Switching Regulatos
The LTC3407EMSE#TRPBF is a power management integrated circuit (PMIC) series designed by Linear Technology, optimized for providing enhanced flexibility and efficiency when integrating power delivery systems into various application fields. Specifically, this IC series is focused on DC-DC switching regulators and voltage regulators.
Overview of LTC3407EMSE#TRPBF
The LTC3407EMSE#TRPBF is a single-chip power management integrated circuit that provides four dual-phase buck DC/DC step-down converters and two low-noise LDO regulators, optimized for integration into specialized solutions such as industrial, automotive and communications applications. It integrates a total of four digital PWM controllers for controlling the buck converters, as well as a digital power-stage controller that provides safe shutdown support for each of the four independent circuits.
The LTC3407EMSE#TRPBF is built on a 16-pin QFN package with dimensions of 3 mm x 3 mm, making it an excellent choice for applications that require a minimum number of components and a tight footprint.
Application Field of LTC3407EMSE#TRPBF
The primary application field of the LTC3407EMSE#TRPBF is power management for industrial, automotive and communications systems. It can also be used for processing applications where extended battery life and reduced power consumption are required. Its wide input voltage range of 4V to 18V makes it well-suited for a variety of system architectures. In addition, its low standby power consumption and fast transient response simplify system design while maintaining low quiescent power.
The series is also designed to meet AEC-Q100 automotive requirements. Its various features make it suitable for a wide range of automotive applications, such as power management for engine computers, infotainment systems and advanced driver assistance systems.
In addition, the LTC3407EMSE#TRPBF can be used in telecom applications, where its fast transient response and low ripple and noise output characteristics help reduce the design complexity of the end system.
Features of the LTC3407EMSE#TRPBF
The LTC3407EMSE#TRPBF is designed to deliver enhanced flexibility and performance. Some of its features include:
- Four dual-phase buck converters with an output voltage range of 0.800V to 18V
- Integrated high-frequency drivers and MOSFETs for improved efficiency, reduced size and simplified design
- Output current up to 4A for each buck converter
- Ultra-low 1.2 μA quiescent current
- High-level of stability and transient response
- Precision output voltage regulation with 0.25% accuracy
- Built-in independent overcurrent and overvoltage protection
- Thermal shutdown protection
- Wide range of operating frequency up to 2MHz
- Two low-noise low-dropout (LDO) regulators with output voltage range of 0.8V to 3.3V and 0.35A maximum output current
Working Principle of LTC3407EMSE#TRPBF
The LTC3407EMSE#TRPBF is a voltage regulator IC that uses switching regulation to convert and control the output voltage. It consists of an input voltage regulator, a control circuit and a switch mode power supply. The input voltage is regulated by the input voltage regulator, which keeps the input voltage within the acceptable range for the switching regulator. The control circuit manages the switching of the power supply by comparing the output voltage to the reference voltage and creating an adjustable duty-cycle pulse-width modulated (PWM) signal.
The PWM signal is then used to control the switch mode power supply, which switches between its two operating states, ON and OFF. During the ON state, the input voltage is applied to the output, while in the OFF state, the output voltage is held at the programmed level by a capacitor. This mechanism allows the IC to regulate the output voltage with a high level of efficiency, while providing fast transient response and low output ripple and noise.
The LTC3407EMSE#TRPBF also has built-in protective features, such as overcurrent and overvoltage protection, thermal shutdown protection and input and output under-voltage lockout. This ensures reliable operation and safe protection of the system from any potential faults.
Conclusion
The LTC3407EMSE#TRPBF is an excellent choice for applications that require power delivery control in the industrial, automotive and communications fields. Its flexible design, wide input voltage range and excellent performance make it suitable for a variety of system architectures. Additionally, its built-in safety features provide reliable operation and peace of mind.