MAX1760HEUB+

Voltage - Output (Min/Fixed):	2.5V (3.3V)
Base Part Number:	MAX1760
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:	1MHz
Current - Output:	1A (Switch)
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	0.7V
Number of Outputs:	1
Output Type:	Adjustable (Fixed)
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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Introduction

The MAX1760HEUB+ is a high-efficiency, high-frequency DC-DC step-down switching regulator from Maxim Integrated that provides up to 1A of continuous output current in a very small footprint (<2.2mm2) and very low-noise operation. It provides integrated boost-mode control, allowing for operation from input voltages as low as 0.5V, enabling a wide range of mobile and Wearables applications. Its integrated low input voltage boost mode can be used to provide a steady 18V output from a 2.4-4.2V input in many applications. The MAX1760HEUB+ also features a 1MHz fixed frequency synchronous buck converter, and is housed in a thermally-efficient MicroSOIC package, making it ideal for space-constrained designs.

Application Field

The MAX1760HEUB+ is typically used in portable devices and Wearables applications, such as smartphones, tablets, digital cameras, and any other device that needs to operate from low-voltage sources. It is ideal for mobile and low-power applications that require low noise and high efficiency. It can also be used in notebook and laptop applications, as well as in medical device applications requiring high efficiency.

Working Principle

The MAX1760HEUB+ is a high-efficiency, high-frequency switching voltage regulator. It is based on a synchronous buck topology and offers a 1MHz fixed switching frequency. The internal control logic is designed to provide a very efficient modulated pulse width modulation (PWM) control, which reduces the output voltage ripple and provides excellent transient response and high-efficiency operation over a wide range of loads.When the input voltage is greater than the output voltage, the controller will switch the high-side MOSFET on, causing the output voltage to drop. The controller then turns off the high-side MOSFET and turns on the low-side MOSFET, forcing current through the inductor and setting the output voltage. The instantaneous output voltage is sensed by the internal error amplifier, which compares the sensed voltage with a reference voltage and sends control signals to the PWM logic to adjust the duty cycle of the switching.The MAX1760HEUB+ also features internal over-voltage, over-current and short-circuit protection to provide a safe operating environment and extend the lifetime of the product. It also features an integrated boost-mode control, which allows for operation from an input voltage as low as 0.5V, enabling a wide range of mobile and Wearables applications.

Conclusion

The MAX1760HEUB+ from Maxim Integrated is a high-efficiency, high-frequency DC-DC step-down switching regulator that provides up to 1A of continuous output current in a very small package and low-noise operation. It is ideal for mobile and low-power applications that require low noise and high efficiency, as well as notebook and laptop applications, and medical device applications requiring high efficiency. It features an integrated boost-mode control and protection functions, making it highly reliable and suitable for a wide range of applications.

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