ISL85410FRZ

Voltage - Input (Max):	40V
Supplier Device Package:	12-DFN (4x3)
Package / Case:	12-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	500kHz, 300kHz ~ 2MHz
Current - Output:	1A
Voltage - Output (Max):	34V
Voltage - Output (Min/Fixed):	0.6V
Series:	--
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

The ISL85410FRZ is an integrated DC/DC buck converter, optimized for low quiescent current applications and high switching frequency, designed specifically for low power, portable and battery powered applications such as notebook, tablets and smartphones. The ISL85410FRZ operates from a single Li-Ion or 3.3V battery and allows the system to adjust power demands without wasting power, ensuring a long battery life. Its high efficiency over a wide load range along with its very small size make it an excellent option for applications needing to minimize the design area and system cost.

Function

The ISL85410FRZ has a constant frequency current mode control, making it highly efficient with excellent transient response and frequency compensation for cycle-by-cycle current limit control. It contains all functions to control an integrated power switch embedded in one piece of IC, making the PCB routing and component count minimal. It also includes an integrated power switch and an adjustable operating frequency ranging from 200kHz to 2.5MHz, adjustable soft-start and a programmable feedback voltage and output voltage rails.The device supports wide input range from 2.7V to 5.5V, making it ideal for single Li-Ion or 3.3V battery powered systems. The built-in voltage detector allows for applications with minimal external components. It also features an integrated NFET switch, which eliminates the need for an external switch and reduces component count.

Key Features

-Integrated Low-dropout Voltage Regulator-Integrated NFET switch-Integrated peak current detection-High efficiency over wide load range-Wide input voltage range from 2.7V to 5.5V-Adjustable operating frequency from 200kHz to 2.5MHz-Programmable feedback voltage-Programmable output voltage rails-Adjustable soft-start

Advantages

The ISL85410FRZ is a highly efficient, low quiescent current, DC/DC buck converter, which ensures a long battery life in low power and portable applications. Its low component count and wide input voltage range make it ideal for single Li-Ion or 3.3V battery powered systems. The integrated peak current detector and adjustable operating frequency allow for a smooth transition between output voltage levels and an improved system performance. The adjustable soft-start feature, further saving power while limiting inrush currents.

Applications

The ISL85410FRZ is ideal for low power applications such as Notebooks, Tablets and Smartphones. It also is applicable for any application where low power consumption, small size and wide input range is a priority.

Conclusion

In conclusion, the ISL85410FRZ is an ideal low quiescent current, DC/DC buck converter for low power applications. It has a wide input voltage range from 2.7V to 5.5V, making it suitable for single Li-Ion or 3.3V battery powered systems. The integrated NFET switch and adjustable operating frequency, along with programmable feedback voltage and output voltage rails, makes it an excellent option. Its low component count and high efficiency ensure a long battery life in applications like tablets, notebooks and smartphones.

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