MAX1676EUB+

Voltage - Output (Min/Fixed):	2V (3.3V, 5V)
Base Part Number:	MAX1676
Supplier Device Package:	10-uMAX
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	Up to 500Hz
Current - Output:	360mA (Switch), 750mA (Switch)
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	0.7V
Number of Outputs:	1
Output Type:	Adjustable (Programmable)
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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MAX1676EUB+ is a step-up DC/DC switching regulator IC, which is a member of a line of popular and integrated voltage regulator/converter components manufactured by Maxim Integrated.MAX1676EUB+ is a very versatile solution with 2 switchable channel outputs and adjustable output voltage. This device is based on a synchronous buck-boost topology and is capable of handling a wide range of input voltages, from 2.5 to 28 volts.MAX1676EUB+ is specifically designed for applications that require high efficiency, and because of its dimmable feature, it can be used in display backlighting applications driven by a single-cell or multi-cell battery. This switch-mode device offers over 90% efficiency, making it suitable even for ultra-low power applications.The MAX1676EUB+ features current-mode, peak current-mode and voltage pulse-width modulation (PWM) control with adjustable switching range, with options for low duty cycle, low and high current limit, as well as thermal shutdown. It operates in a wide temperature range, from -40 to +85°C.The internal channels allow users to simultaneously generate high and low voltage outputs and can also be used to generate a single output voltage when using both channels in parallel. When operating in parallel mode, the output current of the device can reach up to 1.5A.These capabilities make MAX1676EUB+ ideal for a wide range of applications, including LED lighting, LED displays, LED backlight for LCD displays, display drivers, automotive and industrial power systems, portable electronics, and other power supply applications.The working principle of the MAX1676EUB+ revolves around the synchronous buck-boost topology, a power conversion method which uses two switches, some inductors, and a capacitor to adjust input voltage to the required output level.The device is capable of outputting voltages below or above the input voltage. It begins by converting the input voltage to an intermediate voltage which can be adjusted to the required output voltage using the two switches. The two switches are operating by a PWM signal, where the duty-cycle of the PWM signal is determined by the amount of power needed to be generated at the output.When the switches turn on, current flows into the inductor, generating a magnetic field. When the switches turn off, the energy in the magnetic field is then used to replenish the output capacitors and maintain a steady output voltage.The main advantage of the buck-boost topology is the ability to keep the input voltage constant even when its changing. With the MAX1676EUB+, this feature is further enhanced with the addition of a dynamic body diode which enables the regulator to operate even when the input voltage is rapidly changing.Overall, the MAX1676EUB+ is a versatile and efficient switching regulator, and its flexibility in output voltage make it a great choice for powering a range of different applications. It is an excellent choice for those looking for a high efficiency, dimmable voltage regulator/converter that uses the synchronous buck-boost topology.

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