MAX772ESA+

Frequency - Switching:	300kHz
Base Part Number:	MAX772
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	--
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 16.5 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Not For New Designs
Packaging:	Tube

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MAX772ESA+ Application Field and Working Principle

MAX772ESA+ is a DC-DC switching controller which is mainly used in voltage regulators. It is a high accuracy, cost-effectiveness and PWM controller optimized for SMPS, bias supply and switch mode chargers. With its wide input voltage range features, it supports multiple applications in industrial and consumer product designs.

Application Field

MAX772ESA+ is mainly used in a wide range of switch mode applications including industrial, consumer and automotive, such as mobile devices, computers, cameras, printers, LCD displays, automotive equipment and more. Its wide input voltage range and precision voltage regulation allows it to serve in these applications.

Features

The main features of MAX772ESA+ are its high accuracy, wide input voltage range, adjustable soft-start timer, and open loop and closed loop current mode control. Its internal circuit is optimized for fast start-up, fast transient response and minimal power loss. The built-in adaptive adaptive on-time controller features also contributes to its high performance feature set.

Working Principle

MAX772ESA+ works by using feedback control systems to adjust the duty cycle of PWM signal and regulate the output voltage. The controller uses the input voltage to decide the PWM duty cycle and keep the output voltage constant. There are two essential components of the control loop, the feedback loop and the error amplifier.The feedback loop consists of a voltage divider which samples the output voltage and feeds it to the compare and latch block. This block compares the sampled output voltage with the reference voltage. If the sample voltage is lower than the reference voltage, then an adjustment signal is generated to increase the duty cycle of the PWM signal.The feedback loop also has an error amplifier that amplifies the difference between the feedback signal and the reference voltage. This allows the controller to adjust the duty cycle with greater precision.Finally, MAX772ESA+ has a protection system which monitors the output voltage and provides thermal and fault protection. This ensures that the device will be safe to use even under extreme conditions.

Conclusion

The MAX772ESA+ DC-DC switching controller is a great device for applications that requires high accuracy and a wide input voltage range. Its features such as adjustable soft-start timer, open loop and closed loop current mode control and protection system are useful features that optimize its performance and safety.

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