ISL6545IBZ

Frequency - Switching:	300kHz
Base Part Number:	ISL6545
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 14.4 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction

The ISL6545IBZ is a DC/DC switching controller from Intersil Corporation. It is a low-power, high-efficiency, high-performance device designed for use in a wide range of applications, from low voltage to high voltage, from low currents to high currents, and from simple to more complex applications. The ISL6545IBZ is suitable for a wide range of applications, including portable and mobile device power management, mobile power management, Uninterruptible Power Supply (UPS), and system power distribution.

Applications

Designers have used the ISL6545IBZ in a wide range of applications, from mobile phone power systems, to servers, to industrial and scientific instrumentation. The ISL6545IBZ is particularly well-suited for applications requiring high efficiency. The ISL6545IBZ has been designed to reduce power loss through efficient power management and signal conditioning, and its high-efficiency, low-power hardware guarantees a minimum of power consumption.The ISL6545IBZ is well-suited for use in low-voltage and high-voltage applications, from mobile device power management to industrial power systems. It supports common topologies such as buck, boost, and buck-boost, as well as more complex configurations such as flyback. The ISL6545IBZ integrates features such as configurable soft-start, current limiting, voltage tracking, and over-temperature protection, making it suitable for a wide range of applications. Furthermore, it includes special features such as integrated pulse-width modulator (PWM) and low external component count, enabling designers to reduce system cost and complexity.

Working Principle

The ISL6545IBZ is a voltage regulator integrated circuit that regulates the output voltage according to an internal voltage reference. The output voltage is the difference between the internal reference and the input voltage. When the input voltage is higher than the reference voltage, the internal output of the ISL6545IBZ will be low, and it will draw current from the input voltage, reducing the output voltage. When the input voltage is lower than the reference voltage, the internal output of the ISL6545IBZ will be high, and it will sink current from the output, increasing the output voltage. This regulation scheme is repeated continuously until the input and output voltages stabilize at the reference voltage.The ISL6545IBZ also features various other integrated features, such as pulse-width modulation (PWM), current limiting, voltage tracking, and over-temperature protection. The PWM feature enables designers to reduce energy costs by regulating system efficiency while maintaining a constant output voltage. The current limiting feature allows designers to limit the current draw from the inputs, preventing over-current conditions. The voltage tracking feature monitors the input voltage, ensuring that it does not exceed the maximum voltage rating, and the over-temperature protection feature prevents excessive temperature from affecting the device output.

Conclusion

The ISL6545IBZ is an efficient, low-power DC/DC switching controller from Intersil Corporation. Its wide range of features, including configurable soft-start, current limiting, voltage tracking, and over-temperature protection, makes it suitable for a wide range of applications, from portable and mobile device power management to Uninterruptible Power Supply (UPS) and system power distribution. The integrated pulse-width modulator (PWM) and low external component count enable designers to reduce system cost and complexity while maintaining high efficiency. Through its high-performance and efficient power management, the ISL6545IBZ can provide reliable and consistent power to any application.

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