LT8641HUDC#PBF

Series:	*
Packaging:	Tray
Part Status:	Active
Mounting Type:	Surface Mount
Package / Case:	20-WFQFN, 18 Leads, Exposed Pad
Supplier Device Package:	20-QFN (3x4)

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Introduction

The LT8641HUDC#PBF is a DC-DC switching regulator designed to regulate the output voltage and current of a DC voltage source. It is a PMIC (Power Management Integrated Circuit) and belongs to the Voltage Regulators, DC DC Switching Regulators category. This article will discuss the application field and working principle of the LT8641HUDC#PBF.

Application Area

The LT8641HUDC#PBF is a wide input and output voltage isolated switching regulator. It has an adjustable output voltage and adjustable current limit, and provides an accurate regulation of output voltage with 100% duty cycle. It is ideal for a variety of low power applications such as battery powered portable devices, medical devices, consumer electronics, mobile communications, automotive and industrial equipment.

FunctionalDescription

The LT8641HUDC#PBF is a non-synchronous buck converter with a wide input voltage range of 4.5V to 55V, adjustable output current limit up to 2.2A, fixed output voltage up to 36V, and a minimum duty cycle of 0.35. The small size of the device makes the DC-DC switch regulator suitable for compact designs. It provides high efficiency, low ripple and no audible noise.

PackageDescription

The LT8641HUDC#PBF is available in a 10 pin low profile thermally enhanced HTSSOP (heat-sinkable surface-mount package). The package has an exposed heat-sink area for improved thermal performance.

OutputVoltageRegulation

The LT8641HUDC#PBF can be used to regulate the output voltage from a DC power source. The output voltage can be adjusted by setting the voltage divider connected to the feedback pins of the device. A shunt regulator is usually connected at the output in order to ensure accurate regulation of the output voltage.

Current Limit

The LT8641HUDC#PBF can be used to limit the output current to a certain value. This is done by setting the current limit control pins of the device. When the load current exceeds the programmed limit, the device will reduce the output voltage, thus limiting the output current.

PowerSaveMode

The LT8641HUDC#PBF can also be used in power save mode. In this mode, the device operates at a lower switching frequency and the output voltage is dropped to reduce the power consumption.

ShortCircuitProtection

The LT8641HUDC#PBF also provides short circuit protection. When an output short circuit is detected, the device will shut off the output voltage, which will protect the device from being damaged due to excessive current.

Conclusion

The LT8641HUDC#PBF is a PMIC and belongs to the Voltage Regulators, DC DC Switching Regulators category. Its wide input and output voltage range, adjustable current limit, small size and power save mode make it ideal for low power applications. It provides high efficiency, low ripple and no audible noise. The device also has short circuit protection to protect it from being damaged due to excessive current.

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