The LTM4628 is a complete dual 8A output switching mode DC/DC power supply that can be easily configured to provide a single 2-phase 16A output. Included in the package are the switching controller, power FETs, inductor, and all supporting components. Operating from an input voltage range of 4.5V to 26.5V, the LTM4628 supports two outputs each with an output voltage range of 0.6V to 5.5V, set by a single external resistor.
The LTM4628 µModule regulator contains two step-down 8A DC/DC converter circuits with the inductors, MOSFETs and other necessary components and is offered in a space saving and thermally enhanced 15mm x 15mm x 4.32mm LGA package. Its high efficiency design delivers 8A continuous current for each output. Only a few input and output capacitors are needed.
The low thermal impedance of the LGA package and high operating efficiency enable full output power DC/DC conversion from 12VIN to 1VOUT at 70°C ambient with no air flow, or 86°C ambient with 200 linear feet per minute.
The LTM4628 is designed to convert supply voltages ranging from 4.5V to 26.5 to two lower output voltages ranging from 5.5V down to 0.6V with an impressive total DC output error of ±1.5% including line and load regulation. Each output delivers up to 8A.
The LTM4628’s tiny PCB footprint and reduced design time provide a compact, low height, quick to market point-of-load regulator solution for applications such as data storage, routers, network switches, industrial automation, avionics and medical equipment.
The LTM4628 has an internal clock for multiphase operation, beneficial for reducing the required bulk capacitance. In addition, this dual µModule regulator incorporates an onboard temperature diode, allowing users to monitor internal temperature.
The device supports frequency synchronization, multiphase operation, Burst Mode operation and output voltage tracking for supply rail sequencing. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability.
Fault protection features include overvoltage and overcurrent protection. Tracking and margining capabilities simplify supply sequencing and voltage modification in complex systems where various voltage rails are required. The LTM4628 is PB-free and ROHS compliant.
The LTM4628 is rated for operation from -40°C to 125°C, priced at $19.90 each in 1000-piece quantities. All versions are available from stock.
For more information, visit www.linear.com/product/LTM4628 .
Summary of Features of the LTM4628:
- Dual Output 8A DC/DC µModule Regulator
- 4.5V to 26.5V Input Supply Range
- 0.6V to 5.5V Output Voltage Range
- 15mm x 15mm x 4.32 LGA Package
- Tracking/Margining & Clock Output
- Internal Temperature Diode
- Supports Parallel Current Sharing/Multiphase Operation
Typical Application
About Linear Technology
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, µModule products, and many other analog functions. Applications for Linear Technology’s high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.
Linear Technology (UK) Limited
Tel: +44 (0)1628 477066
E-mail: uksales@linear.com
Web site: www.linear.com
Website for product information: http://www.linear.com/product/LTM4628
