MAX856CSA+T

Voltage - Output (Min/Fixed):	3.3V, 5V
Base Part Number:	MAX856
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:	500mA (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 MAX856CSA+T is a versatile and economical pulse-width modulated (PWM) voltage regulator integrated circuit. This DC to DC switching regulator has a wide input voltage range, low noise operation, and extremely accurate output voltage regulation. It is an ideal solution for a variety of applications, including industrial motor control and switching power supplies.

Features

• Accepts wide 4.5V to 15V input range
• Low noise operation: 100dB (at 5V/V output)
• Accurate output voltage regulation: +/- 0.05%
• Output voltage range is programmable from 0.6V to 9V
• Pulse-width modulated (PWM) operation
• High-efficiency up to 84%
• 3A switch current
• Shutdown current of 40uA
• Integrated low on-resistance power switch

Applications

The main application field of the MAX856CSA+T is industrial motor control. The device has a wide input voltage range, allowing it to efficiently convert a wide variety of DC power sources into regulated DC output voltage. In addition, its accurate output voltage regulation is suitable for applications that require precise control.The MAX856CSA+T is also suitable for use in switching power supplies. Its low noise operation and high efficiency enable it to efficiently convert input voltage into a required output voltage. This makes it an ideal choice for applications such as AC adapters and chargers, USB power supplies and other similar equipment.

Working Principle

The MAX856CSA+T is a pulse-width modulation (PWM) voltage regulator integrated circuit. It consists of an adjustable feedback loop, a fixed frequency oscillator, an operational amplifier and an output stage. The output stage is an integrated low on-resistance power switch, which can handle up to 3A of current.The feedback loop monitors the output voltage of the regulator and compares it to a reference voltage. If the output voltage is too low, the feedback loop will increase the duty cycle of the pulse-width modulation signal, thus increasing the current flowing through the output stage. This in turn will cause the output voltage to increase. Similarly, if the output voltage is too high, the feedback loop will reduce the duty cycle, thus decreasing the current flowing through the output stage, which will decrease the output voltage.The fixed frequency oscillator generates the PWM signal with a frequency of 2kHz. This frequency is programmable to allow a range of different PWM signals to be generated and a wide range of output voltages to be attained.The MAX856CSA+T also includes a shutdown feature, which allows the device to be turned off and on with a single signal.

Conclusion

The MAX856CSA+T is a versatile and economical pulse-width modulation (PWM) voltage regulator integrated circuit. This DC to DC switching regulator has a wide input voltage range, low noise operation, and extremely accurate output voltage regulation. It is an ideal solution for a variety of applications, including industrial motor control and switching power supplies.

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