MAX850ISA+T

Voltage - Output (Min/Fixed):	-1.28V (-4.1V)
Base Part Number:	MAX850
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-25°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz
Current - Output:	5mA
Voltage - Output (Max):	-9V
Series:	--
Voltage - Input (Max):	10V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable (Fixed)
Topology:	Charge Pump
Output Configuration:	Negative
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The MAX850ISA+T application is part of the family of DC DC Switching Regulators, commonly referred to as “Power Management Integrated Circuits” (PMIC), which provide power conversion and control. This particular application utilizes a wide input range to efficiently deliver high output voltage and current, making it suitable for a wide variety of applications such as automotive, communication and industrial systems.

Working Principle

The first step in the operation of the MAX850ISA+T is the conversion of the input voltage to an appropriate voltage level for the switching converter. This is done through an integrated high-efficiency synchronous-rectifier current-mode converter, which operates at PWM frequencies of up to 500 kHz. This converter, along with its respective control circuit, operates on the input voltage to ensure that the output voltage is always at the regulated level.Once the optimal voltage level is established, the output is then regulated by a secondary stage to achieve the desired output voltage and current. The switching regulation stage utilizes synchronous rectifying circuits and charge pumps to deliver high peak currents. This stage also incorporates protection features, such as thermal shutdown and over-voltage protection, to protect the device against fault conditions.The output transitions between low and high states to maintain the regulated level. This is accomplished through a regulated drive circuit, which adjusts the amount of current delivered to the load depending on the system\'s environment and load conditions. The MAX850ISA+T also features a low-power sleep mode to reduce power consumption when the load is not active and in the low current state.

Applications

The MAX850ISA+T is suitable for a wide range of applications, including automotive, communications, and industrial systems. Examples of automotive applications include high-temperature engine control, motor control, exhaust gas recirculation systems, and vehicle-to-vehicle communications. For communication systems, the device can be used to provide power to transmitters and transceivers, as well as mobile device charging systems. In industrial applications, the device can be used to provide power to high-temperature process control systems, as well as to system-critical sub-systems, such as sensors and measurement devices. In addition, the device is also well-suited for use in embedded systems, such as Internet of Things (IoT) and wearable device applications, due to its small package size, high efficiency, and wide input voltage range.

Conclusion

The MAX850ISA+T is a high-performance DC DC switching regulator that provides efficient and reliable power conversion and regulation over a wide input voltage range. It is suitable for a wide range of automotive, communications, and industrial applications, as well as for embedded systems. Its built-in protection features allow for safe operation in potentially hazardous environments, while its high efficiency and low power sleep mode help to conserve power. It is an ideal choice for power conversion and control in a wide variety of applications.

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