MAX851ISA+T

Voltage - Output (Min/Fixed):	-1.28V (-4.1V)
Base Part Number:	MAX851
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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MAX851ISA+TThe MAX851ISA+T is a low-dropout, precision-adjustable regulator. It is targeted at high-side supplies with a wide input voltage range and very low quiescent current. The MAX851ISA+T belongs to a class of DC-DC switching regulators, which make use of two opposing voltage-controlled switches to convert a direct current (DC) power source to another DC source of different voltage.DC-DC switching regulators typically consist of a high-frequency operating device called a switch, a control integrated circuit (IC) that regulates the operation of the switch, and other supporting components like inductors, capacitors, and resistors. The basis of operation of these regulators is switching between two different voltages; for example, a switch may be opened when the voltage is greater than a certain reference and closed when the voltage is less than a certain reference.The MAX851ISA+T is a current-mode switching regulator that takes in an input voltage range from 2.7V to 10V and provides a programmable fixed voltage output between 0.7V and 7.5V. It is designed for high-side applications and features low quiescent current and low output voltage ripple over a wide input voltage range. The output current of the device can be adjusted to up to 800mA, providing a great deal of flexibility. It is also equipped with a remote sense pin to allow the output voltage to be adjusted at the remote load to compensate for any voltage drops due to the internal resistance of the load.The MAX851ISA+T is built with a Self-Adjustable Constant-On-Time (ACT) control technique that makes it straightforward to design and adjust. The input voltage and frequency of the device are adjustable and its current-mode control loop ensures fast response and stability.To ensure high reliability, the device is designed to work in extreme temperatures and conditions, with an operating temperature range of -40°C to +85°C and an over-temperature protection feature. Its high-frequency architecture also enables low EMI emission as well as a small footprint, making it ideal for a wide variety of applications. The MAX851ISA+T is a great choice for automotive, consumer electronics, industrial, and communications role-out applications where high efficiency and power savings are required. Its low voltage ripple, small size, and fast switching characteristics make it well suited for energy management applications requiring low quiescent current and low power loss. It is also handy for applications like USB-powered devices and appliances that need low noise and high efficiency voltage conversion.In summary, the MAX851ISA+T DC-DC switching regulator provides high performance and reliability in various industrial and consumer applications that require a stable power source with adjustable output current, low power loss, low noise and high efficiency. With its high-frequency architecture and adjustable input voltage and frequency, it remains the ideal choice for portable power sources, energy management systems, and other applications that require precision voltage regulation.

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