LM5009MM Integrated Circuits (ICs)

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The LM5009MM is a switching voltage regulator from National Semiconductor Corporation’s Power Management IC family. This DC-DC switching regulator is an economical solution for applications requiring excellent performance, versatility, scalability, and control. It is designed to supply a regulated output voltage while allowing a wide input voltage range, and yet remain as efficient as as a traditional linear regulator.

The LM5009MM works by switching power from an input power source, such as a battery, to an output voltage. It operates using an internal pulse width modulation (PWM) controller to accurately provide the desired output voltage from an input voltage range of 4V to 40V. The operating frequencies of its internal PWM controller can switch from 140 KHz to 500 KHz and is used to set the output frequencies.

The LM5009MM is capable of adjusting the output current from a current limit of 0A to 8A with a maximum load current of 10A. It has a in-built soft-start circuit which increases the output voltage in a safe and controlled manner, even at high output voltages. The device also has an over-temperature protection (OTP) feature which can protect the regulator and the output voltage from high temperature or low current over-shoots.

The LM5009MM is available in two package types, an on-board mounted DFN (dual flat no- lead) package, and a through-hole package. The DFN package has higher thermal performance and excellent conformal coated protection. The through-hole package has small space and allow excellent flexibility while mounting the device.

The LM5009MM is typically used in DC-DC switchingregulator applications such as portable devices, communicationequipment, and power supply units. It is also suitable for applications such as automotive and industrial motor drivers, and battery charger.

The LM5009MM provides many advantages for high-performance applications such as its ability to accurately regulate output voltages, over-temperature protection feature, no external current sense resistor, soft-start feature, and small size. It also has excellent compliance to the automotive EMC standards and high inductive noise immunity.

In summary, the LM5009MM is an economical and versatile DV-DC switching regulator ideal for a wide range of portable, automotive, and high-performance industrial applications. Its features, high-efficiency, and thermal performance make it an ideal choice for any application needing a reliable, economical, and high performance voltage regulator.

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