MAX797CSE+

Frequency - Switching:	150kHz, 300kHz
Base Part Number:	MAX797
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Enable, Pulse Skipping, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	96%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck, Boost, Flyback
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction to MAX797CSE+

The MAX797CSE+ Standard Switching Controller from Maxim Integrated is a synchronous forward converter featuring low ripple and low quiescent current. It is ideal for use in small, portable designs, making it a popular choice for powering portable electronic devices such as notebooks, mobile phones, printers, portable medical instruments and other digital Core Logic devices. This particular device offers maximum output current of up to 1.75A, voltage-mode control, soft-start and a wide input voltage range of 3.3V to 55V.

Application Field of MAX797CSE+

The MAX797CSE+ Controller is a compact, low-cost and efficient switching regulator designed for use in applications such as battery powered products, medical instruments, networking/ communications systems, office automation products, LCD/ LED displays and portable systems. Its low input voltage range of 3.3V to 55V makes it ideal for applications such as mobile phone chargers, notebooks, printers and other portable electronics. The device provides an output current capability of up to 1.75A, making it the perfect solution for powering small, portable electronics.

Working Principle of MAX797CSE+

The working principle of the MAX797CSE+ Standard Switching Controller is as follows: It integrates a high-side power switch and low-side power switch in a single high-density package. The controller regulates the maximum peak switch current by supplying a controlled output voltage that is maintained by its internal current-limiting circuits. The output voltage is monitored by the voltage regulation feedback loop built into the device. The feedback loop measures the output voltage and adjusts the controller’s switching frequency to keep the output voltage within a range of tolerance.The synchronous forward converter also incorporates several protection features such as current limit detection, short-circuit protection, temperature shut down and overvoltage protection to ensure safe, reliable operation of the device. The device also features a soft-start circuit which prevents inrush current during startup as well as a burst mode for extended operation.

Conclusion

In conclusion, the MAX797CSE+ Standard Switching Controller from Maxim Integrated is an ideal choice for powering small, portable electronics such as notebook computers, mobile phones, printers and medical instruments. It features low ripple, low quiescent current, voltage-mode control and a wide input voltage range. It is also protected by several safety features, including current limit detection, short-circuit protection, temperature shut down and overvoltage protection, making it an excellent choice in terms of reliability and efficiency.

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