LM34922MY/NOPB

Voltage - Output (Min/Fixed):	2.51V
Base Part Number:	LM34922
Supplier Device Package:	10-MSOP-PowerPad
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	Adj to 1MHz
Current - Output:	2A
Voltage - Output (Max):	28V
Series:	--
Voltage - Input (Max):	28V
Voltage - Input (Min):	6V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LM34922MY/NOPB is a step-up DC-DC converter designed by Linear Technology and is part of their family of advanced PMIC (Power Management IC) voltage regulators. The regulator is a high efficiency, wide input voltage range, small form factor and cost-effective solution for a variety of applications including powering microprocessors, LEDs, I/O cards, communications, automotive and industrial control systems.

Application Field

The LM34922MY/NOPB is suitable for high power applications requiring high efficiency and small size. Its wide input voltage range (up to 45 V) makes it suitable for use in a variety of applications including automotive, industrial and communications systems. Furthermore, the LM34922MY/NOPB is designed to provide excellent noise rejection and low shutdown current. The LM34922MY/NOPB can be used in various applications including powering microprocessors, wireless base stations, microcontrollers, and FPGAs. It can also be used to power a variety of LED lighting systems, motor drive circuits, and audio amplifiers.

Working Principle

The LM34922MY/NOPB is a DC-DC converter that uses a pair of switching FETs in a synchronous rectifier configuration to achieve high efficiency. The two FETs, operating in an ON-OFF manner, switch between high and low impedance states. During the ON-state, the FETs are conducting and power is transferred to an energy storage capacitor. During the OFF-state, the FETs switch to the high impedance state, causing the capacitor to discharge. This cycle is responsible for generating a regulated output voltage. The LM34922MY/NOPB also features an adjustable feedback loop and adaptive gate drive circuitry. The feedback loop adjusts the output voltage based on the feedback voltage, while the adaptive gate drive circuitry optimizes the switch performance. This allows for fast transient response and low output voltage ripple.

Conclusion

The LM34922MY/NOPB is a highly efficient, cost-effective and small form factor step-up DC-DC converter. Its wide input voltage range and excellent noise rejection make it ideal for a variety of applications including powering microprocessors, LEDs, I/O cards, communications, automotive and industrial control systems. Its synchronous rectifier configuration and adjustable feedback loop provide fast transient response, low output voltage ripple and excellent efficiency.

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