LM5101CMA

Current - Peak Output (Source, Sink):	1A, 1A
Base Part Number:	LM5101
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Rise / Fall Time (Typ):	990ns, 715ns
High Side Voltage - Max (Bootstrap):	118V
Input Type:	Non-Inverting
Series:	--
Logic Voltage - VIL, VIH:	2.3V, -
Voltage - Supply:	9 V ~ 14 V
Gate Type:	N-Channel MOSFET
Number of Drivers:	2
Channel Type:	Independent
Driven Configuration:	Half-Bridge
Part Status:	Obsolete
Packaging:	Tube

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Overview of LM5101CMA Gate Drivers

The LM5101CMA is a gate driver with primary protection and termination functions developed by Texas Instruments. It is an ideal driver for high-speed logic circuits and other power-management devices requiring fast turn-on and turn-off time. It is designed for gate drive applications where high performance and low gate charge are required. This device also features adjustable level shifting, which can be used to reduce power losses in high-speed transitions.

Application Field of LM5101CMA Gate Drivers

The primary application area of LM5101CMA gate drive is to drive high speed, high power loads like power MOSFET’s, IGBT’s, and other power and logic circuits. This device is well-suited for applications such as power converters, and motor drives, due to its versatile protection and current limiting features. It also provides an adjustable level shifting function, which enables power savings, especially when high frequency switching is required.This device is ideal for automotive applications that require high speed, high current drive, such as engine control and gear selection circuits. It also finds application in communications, industrial control, alternative energy sources, and consumer applications.

Working Principle of LM5101CMA Gate Drivers

The LM5101CMA gate driver provides fast turn-on and turn-off signal with adjustable level shifts from 2V to 9V. It has three operating modes: Active, Active With Fault Detection, and Active With Active Current Limited mode (ACLM). In Active mode, the device drives a high-speed signal from 2V to 9V to quickly turn-on/off the power MOSFETs or IGBTs as per the logic signal fed to it. The Fault Detection mode ensures that in case of disruption of the logic signal, the device will not drive the output. The ACLM mode allows the device to switch at a safe level in order to limit the maximum current drawn when in high-power transitions. This device is protected against over-voltage, under-voltage and over-temperature conditions in order to protect other components in the circuit. It comes in a tiny package with low component count and very low standby power consumption, making it ideal for low power applications.

Conclusion

The LM5101CMA gate driver by Texas Instruments is an ideal device for high power and high speed power switching applications. It features adjustable level shifting, protection and termination functions, and enables power savings in high frequency switching applications. It is designed for automotive applications and other power and logic circuits where fast turn-on and turn-off times are required. The LM5101CMA is suitable for a wide range of applications, from power converters and motor drives, to communication systems, industrial control, alternative energy sources and consumer electronics.

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