MAX858CSA+T

Voltage - Output (Min/Fixed):	3.3V, 5V
Base Part Number:	MAX858
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	500kHz
Current - Output:	125mA (Switch)
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	6V
Voltage - Input (Min):	0.8V
Number of Outputs:	1
Output Type:	Programmable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The MAX858CSA+T is a highly integrated dc-to-dc convertor from Maxim Integrated. It is part of the family of voltage regulators, DC/DC switching regulators, and is specifically designed for battery-powered applications. It features a wide input range (1.8V to 10.8V) and a 4MHz switching frequency, providing high efficiency even at light loads. The MAX858CSA+T also features a safe start feature and over-voltage protection, making it ideal for use in a variety of applications. The MAX858CSA+T is a step-down DC-DC converter and can deliver up to 1.2A of continuous output current at 3.3V or 5V. It uses a P-channel power MOSFET as the main switching element, capable of operating in fixed frequency or a pulse width modulation (PWM) control mode, suitable for a wide variety of applications. The device also supports a variety of protection functions to guarantee safe operation and offer the best performance under a wide range of operating conditions, including over-temperature, over-current, and short-circuit protection.The MAX858CSA+T application field is diverse. It can be used for both AC/DC and DC/DC power conversion, either in step-up or step-down mode, depending on the input and output voltage levels. It is suitable for small and portable electronic devices, such as cell phones, bluetooth headsets, wearables, etc. where the power source can vary from 1.8V to 10.8V and the output voltage can be anything from 1.1V to 5V.The MAX858CSA+T\'s working principle is based on the principle of inductive switching, which is also known as switching mode power conversion. This is done by utilizing a P-Channel switched MOSFET to periodically charge and discharge an inductor, thus effectively converting a DC source voltage into a lower DC output voltage. The inductor acts as a flyback mechanism, storing energy in the magnetic field during the charging phase, and then releasing it again during the discharge phase. The current flowing through the inductor rises exponentially during the charge phase and then sharply falls during the discharge phase, creating a voltage spike on the output side of the inductor. The MAX858CSA+T also features a pulse width modulation (PWM) control mode, which enables the user to adjust the PWM duty cycle to achieve the desired output voltage. This is done by sensing the output voltage and adjusting the PWM duty cycle in order to maintain a constant output voltage.In summary, the MAX858CSA+T is a highly integrated voltage regulator, DC/DC switching regulator, designed for use in a wide variety of applications. It features a wide input range, a P-channel power MOSFET, fixed frequency or pulse width modulation (PWM) control mode, a variety of protection functions, and a working principle based on the inductive switching technique. This makes it an ideal choice for battery-powered applications such as cell phones, bluetooth headsets, and wearables.

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