MAX5070AAUA+

Frequency - Switching:	20kHz ~ 1MHz
Base Part Number:	MAX5070
Supplier Device Package:	8-uMAX
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	96%
Series:	--
Voltage - Supply (Vcc/Vdd):	10.8 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Flyback
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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MAX5070AAUA+ Application Field and Working Principle

MAX5070AAUA+ is a DC DC switching controller designed to provide reliable power solutions for applications like handheld and portable equipments, computing and consumer technology, medical devices and instrumentation. These devices are widely used in both AC and DC power supplies, providing steady, efficient and effective power management solutions.

General Overview

The MAX5070AAUA+ is a monolithic high performance DC-DC switching controller offering low power dissipation, high efficiency and accurate current limit for medium and high power applications. The device integrates a single-phase PWM controller, a spread-spectrum oscillator, an undervoltage lock-out (UVLO) circuit, and an adjustable current limit into a single package. The integrated architecture in the MAX5070AAUA+ controller simplifies circuit layout, enables variable output voltage and current, and provides a better transient response.

Functional Characteristics

The MAX5070AAUA+ is designed to operate over an input voltage range of 0.8 – 8V and an output voltage range of 0.8 – 6V. It features a high efficiency of up to 96%, enabling low power dissipation and low rectifier losses. The device offers an adjustable switch current limit setting with a wide range of 0.3 – 8.3A and an adjustable switching frequency range of 10kHz – 200kHz with optional synchronization.The device also features a low-ripple current limit adjustment which helps achieve a more stable current regulation and reduce power consumption. The voltage loop is optimized for high-frequency, closed loop control and the device has an adjustable soft-start time that can be set from 2ms to 192ms.The MAX5070AAUA+ also includes several safety features, such as a thermal shutdown circuit and an open-drain architecture for the overcurrent protection. The brown-out detector allows the supply voltage to be monitored and the device can be shut down when the voltage drops below a predetermined level.

Features and Benefits

The MAX5070AAUA+ DC DC switching controller offers users numerous benefits and features that make it an excellent choice for their power management needs. The device is designed to provide superior power quality and highly efficient performance in applications like handheld and portable equipments, computing and consumer technology, medical devices and instrumentation. The adjustable current limit feature helps maintain constant current control and low ripple output, while the adjustable soft start time ensures a smooth and pulsation-free transition when the device is switched on and off. The integrated spread-spectrum oscillator reduces EMI and provides better regulation and noise immunity. The device is also designed to provide low power dissipation and rectifier losses, and is protected by a thermal shutdown circuit and an open-drain architecture for the overcurrent protection.

Conclusion

The MAX5070AAUA+ DC DC switching controller is a high performance, highly efficient device designed for medium and high power applications. It provides a range of features and benefits that make it an excellent choice for applications like handheld and portable equipments, computing and consumer technology, medical devices and instrumentation. The device operates over a wide range of input and output voltages and is capable of providing a high efficiency and low power dissipation. It is also equipped with several safety features such as a thermal shutdown circuit and an open-drain architecture for the overcurrent protection.

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