Step-Down µModule Regulator LTM4637

MILPITAS, CA – May 7, 2013  – Linear Technology Corporation introduces the LTM4637, a 20A DC/DC step-down µModule® regulator with built-in precision differential remote sense amplifier. The device automatically corrects voltage errors caused by PCB trace voltage drops and is suitable for powering loads such as FPGAs that require high current at low voltages. The total output DC voltage accuracy is guaranteed to be ±1.5% over the -40ºC to 125ºC range. The LTM4637 includes the inductor, MOSFET, DC/DC controller and compensation circuitry. It is packaged in a low-profile 4.32mm LGA package and 15mm x 15mm footprint. The device has a VIN range of 4.5V to 20V and optimizes the operating efficiency of 5V and 12V input systems (88%, 12VIN, 1.8VOUT/20A). The output voltage can be set with a single resistor from 0.6 V to 5.5 V. Four devices in parallel can deliver 80 A of load current. Applications include industrial and medical equipment, as well as networking and telecommunication systems.

　　One of the key features of the LTM4637 is its drop-in replacement and pin-compatibility with the LTM4627 15A output µModule regulator. Pin compatibility is very important to system designers because these products can be interchanged at any stage from development to production without modifying the layout. Linear Technology offers a range of pin-compatible µModule devices.

　　The LTM4637 features protection against overcurrent and overvoltage conditions. The device's internal temperature can be monitored via an internal temperature sensing diode. The LTM4637 is rated for operation over the -40°C to 125°C temperature range. Pricing starts at $22.10 each in 1,000-piece quantities. For more information, visit www.linear.com.cn/product/LTM4637.

　　Photo Caption: 20A µModule Regulator in Small, Low-Profile 4.32mm LGA Package

　　Performance Summary: LTM4637

　　20A regulator system in 15mm x 15mm x 4.32mm LGA package

　　Differential remote sense amplifier for precise regulation

　　±1.5% VOUT DC Accuracy over -40°C to 125°C Operating Temperature Range

　　Parallel connection of four devices provides up to 80A output current

　　Overvoltage and overcurrent protection

　　About Linear Technology Corporation

　　Linear Technology Corporation, a member of the S&P 500 Index, has been designing, manufacturing and selling a wide range of high-performance analog integrated circuits for major global companies for the past 30 years. Linear Technology's products provide an indispensable bridge between the analog world and digital electronics, with applications in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology manufactures power management, data conversion, signal conditioning, RF and interface ICs, µModuleÒ subsystems, and wireless sensor network products. For more information, please visit www.linear.com.cn.

　　LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.