MIC4478YME-T5 Integrated Circuits (ICs)

Logic Voltage - VIL, VIH:	0.8V, 2.4V
Base Part Number:	MIC4478
Supplier Device Package:	8-SOIC-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Rise / Fall Time (Typ):	120ns, 45ns
Input Type:	Non-Inverting
Current - Peak Output (Source, Sink):	2.5A, 2.5A
Series:	--
Voltage - Supply:	4.5 V ~ 32 V
Gate Type:	N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Low-Side
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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MIC4478YME-T5 Application Field and Working PrincipleThe MIC4478YME-T5 is a power management integrated circuit with gate drivers from the Texas Instruments extended portfolio. It belongs to the PMIC - Gate Drivers category and is designed for high reliability and performance in power management applications. It is a transistor-level switch for controlling the output stages of power supplies and motor drives.The MIC4478YME-T5 achieves a low-power consumption of up to 500mWs. It has a wide operating voltage range of 7 Vdc to 40 Vdc and can handle up to 1.5A peak gate drive current. In addition, this gate driver can be used to drive both low-side and high-side switches with its complementary output, making it suitable for a wide range of topologies.The MIC4478YME-T5 has built-in fault detect and protection capability including a short-to-battery latch, short fault latch and an active over-temperature protection which disables FETS properly in the event of an overtemperature event. This helps ensure a long product life, reliable operation, and maximum safety and reliability.The MIC4478YME-T5 has a 3-state output stage and an integrated pull-up device for quick recovery from controlled disable state. This ensures that switching noise does not propagate to the system, minimizing any disturbance to connected components.The MIC4478YME-T5 features a host of features that are optimized for user convenience. These features include adjustable shutdown and PWM frequency, adjustable hysterisys, adjustable soft-start and PWM burst operation, as well as an integrated undervoltage lockout. These features help ensure that the MIC4478YME-T5 is able to efficiently power motor drives, power supplies and other applications with its maximum energy level efficiency.The MIC4478YME-T5 is built on an advanced IC process technology, providing a low-cost solution to the current industry needs. The high level of integration of this gate driver makes it ideal for use in various application fields. These application fields include automotive, consumer, industrial and medical.The MIC4478YME-T5 working principle is based on the four-step gate drive topology. First, the MOSFET gate is driven high (or low) with a current source (sink). This is followed by a resistive level shift that occurs to set the precise gate turn-on (or turn-off) voltage. After that, the gate driver\'s internal transistors must turn on (or off) to force the gate voltage to the desired level. Finally, a control loop starts to resistively stabilize the voltage at the gate terminals, making it possible to provide an accurate and consistent gate driving.The MIC4478YME-T5 provides a wide variety of features to ensure its efficient operation. Its sinusoidal drive waveform, expanded PWM frequency range, and adjustable charge pump duty cycle make sure that it is able to power different applications with the highest degree of efficiency. On the other hand, its integrated fault-detect and protection ensure maximum safety and reliability for the entire circuit.The MIC4478YME-T5 is an excellent choice for power management applications as it provides a low-cost and efficient solution. Its features are optimized for high reliability and performance, making it suitable for a wide range of applications. Additionally, its integrated fault-detect and protection ensures maximum safety and reliability, making it an essential component in any power management related project.

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