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PMIC - Voltage Regulators - DC DC Switching Regulators

The LM2672M-12/NOPB is a high-speed, high-current low-power DC-DC regulator, applicable to switch mode regulators for powering systems requiring high-efficiency DC-DC voltage conversion. This regulator provides power supply solutions with reduced size, low cost and high efficiency. It features a wide input voltage range and can be integrated with a variety of pulse cycling modes, including pulse width modulation (PWM), pulse frequency modulation (PFM), and a hybrid of both.

Features

• Wide input voltage range of 3V to 16V
• High-efficiency up to 92%
• Integrated adjustable soft-start & short circuit protection
• Fixed 2.5A & 3.5A output current capability
• 50kHz to 1MHz+ operating frequency
• Integrated voltage feedback loop
• Low output voltage ripple
• Low power mode

Applications

• Mobile communications
• ASIC & FPGA power rails
• Cloud computing
• Data center & enterprise applications
• Servers & routers
• Point of sale (POS) terminals

Working Principle

The LM2672M-12/NOPB uses a synchronous buck-boost architecture featuring internal NFET switches and input/output filter capacitors to regenerate the input power and store or release energy as needed. It requires the addition of an external capacitor, inductor and resistors for operation.

The IC provides a regulated output voltage at all times, seamlessly switching from buck to boost operation as appropriate without requiring external transistors. The switching rate of the pulse width modulation (PWM) logic is user adjustable from 50kHz up to 1MHz+ using IDT\'s adjustable PWM. Thus, the LM2672M-12/NOPB provides an easier and more cost-effective way to implement a DC-DC switching regulator, making it suitable for a variety of applications.

Conclusion

The LM2672M-12/NOPB is a low-power, high-speed DC-DC regulator that operates at a switching frequency of 50 kHz to 1 MHz+. It provides high efficiency power conversion and load regulation while enabling the user to select various pulse cycling modes including PWM, PFM and a hybrid of both.

The LM2672M-12/NOPB is ideal for applications like mobile communications, cloud computing, data center and enterprise needs, servers and routers, ASIC & FPGA power rails, and point of sale (POS) terminals.

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