MAX797ESE-T

Voltage - Supply (Vcc/Vdd):	5 V ~ 30 V
Base Part Number:	MAX797
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Pulse Skipping, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	96%
Frequency - Switching:	150kHz, 300kHz
Series:	--
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:	Tape & Reel (TR)

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Introduction

The MAX797ESE-T is a DC-to-DC switching controller designed for use in a variety of digital applications, providing industry-leading efficiency and accurate error detection for a wide range of voltage levels. This product, as part of the MAX797 Very High-Efficiency DC-to-DC switching controller family, is from Maxim Integrated, one of the leading semiconductor companies.

Application fields and Working principle

The MAX797ESE-T is widely used in a variety of applications such as appliances, computing, and power management. This product provides excellent conversion efficiency, fast transient response, and low EMI/RFI noise when operating at peak output current levels. It is also suitable for use in mobile phones and automotive applications due to its high dynamic range and high accuracy.The operation of the MAX797ESE-T is based on a hysteretic control topology. This topology combines the advantages of both constant frequency and constant on-time control. It also provides a fixed off-time window for maximum load regulation accuracy over load and input voltage variations. The MAX797ESE-T also contains a peak current limit window that allows the controller to maintain a constant frequency even under a high load current condition. Additionally, the controller features an adjustable soft-start time, allowing the user to set the time needed to start a stable output voltage.The MAX797ESE-T uses advanced error detection techniques to accurately detect open, short, and overload connections of the external MOSFETs. It is also capable of monitoring the output voltage for overvoltage conditions and providing protection. This product also supports a 5.5V undervoltage lockout to protect the system from operating at an insufficient input voltage level.Another important feature of the MAX797ESE-T is its ability to control an external power MOSFET. This is made possible by its integrated switch pin, which is used to control the gate of an external MOSFET switch. With the help of the switch pin, it can be used for positive on/off control and modulation of the power MOSFET. This allows the controller to precisely control the converter\'s output voltage and improve system stability.

Conclusion

The MAX797ESE-T is a very high-efficiency DC-to-DC switching controller with a wide range of applications in digital power management. It provides industry-leading conversion efficiency, fast transient response, and low EMI/RFI noise when operating at peak output current levels. Additionally, it supports a wide range of voltage levels, has excellent error detection capabilities, and can be used to control an external power MOSFET, making it ideal for digital power management applications in various industries.

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