LM828M5

Voltage - Output (Min/Fixed):	-Vin, 2Vin
Base Part Number:	LM828
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	12kHz
Current - Output:	25mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	1.8V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive or Negative
Function:	Ratiometric
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction to LM828M5
The LM828M5 is a Dual-channel Low-Side MOSFET Driver manufactured by STMicroelectronics. It is designed to provide fast and accurate control of the two external N-Channel Power MOSFETs. It is capable of driving up to 30A of current per channel and operates from a 5V to 60V supply voltage with a programmable under-voltage lockout (UVLO) and slew rate. This driver is available in an 8-Pin SSOP package, making it suitable for high-density applications.Applications
The LM828M5 is suited for various DC-DC switching regulators and DC motor control applications. It is suitable for driving power MOSFETs in high-side and low-side configurations and is ideal for use in high-side/low-side synchronous rectification, buck and boost applications. Additionally, the LM888M5 features a high slew rate and can handle large transient overcurrents. This makes it suitable for use in DC/DC converters, hybrid electric vehicle (HEV) and electric vehicle (EV) battery charger applications, and automotive power supply systems.LM828M5 Working Principle
The LM828M5 utilizes two seperate power MOSFETs to control the DC output voltage. The two high-side and low-side switches are integrated into the same system, making it a highly efficient design. The LM828M5 uses an in-built error amplifier that is used to compare the input voltage with the output voltage, and adjusts the gates of the two MOSFETs accordingly to ensure the DC output voltage remains constant. The two independent MOSFETs operate together to ensure the output voltage is regulated, with one of the MOSFETs turning on and the other turning off in order to maintain the output voltage. This is done at high frequencies which results in a highly efficient operation and reduces power losses.The LM828M5 also includes a delay circuitry which ensures the high-side and low-side MOSFET turn on and off in a controlled manner. To prevent potential damage or short-circuiting, the driver also includes an under-voltage lockout (UVLO) which will shut off the switches if the voltage drops below a certain level.Conclusion
In conclusion, the LM828M5 is a Dual-channel Low-Side MOSFET Driver manufactured by STMicroelectronics which is designed to provide fast and accurate control of two separate N-Channel Power MOSFETs. It is well suited for various DC-DC switching regulators and DC motor control applications including DC/DC converters and electric vehicle battery charging systems. The driver includes a programmable under-voltage lockout (UVLO) and delay circuitry for controlled MOSFET turn on and off which makes it suitable for high-density applications.

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