Linear's Power and Speed-Performance Products


Complete DC/DC μModule Regulator Delivers Dual 8A Outputs from up to 26.5VIN

Dual 26.5VIN, 8A DC/DC μModule Regulator

Linear Technology Corporation introduces the LTM4628, μModule® regulator containing two step-down 8A DC/DC converter circuits with the inductors, MOSFETs and other necessary components in a 15mm x 15mm x 4.32mm LGA package. 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. Summary of Features: 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
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. Tracking and margining capabilities simplify supply sequencing and voltage modification in complex systems where various voltage rails are required. The LTM4628 is rated for operation from -40°C to 125°C. All versions are available from stock. For more information, visit

Linear Technology introduces the LTC5564, a precision RF power detector that operates from 600MHz to 15GHz, with exceptionally fast response time of 7ns from a pulsed RF signal. Moreover, the device has an on-chip fast comparator with a propagation delay of 9ns. The comparator threshold voltage is user-settable, enabling a flexible trip point. The device's output may be latched by asserting a latch-enable pin, permitting a fast capture of a short-duration, single-event signal or a fault condition. Its best-in-class performance enables unprecedented speed in timing measurements, rapid response to fault detection and RF power measurements in microwave systems. The LTC5564 can measure RF input signals from -24dBm to +16dBm. This dynamic range is provided by a programmable gain output amplifier with four gain settings, which are digitally controlled by two logic input pins that are binary-weighed. Thus improved sensitivity can be achieved when measuring low level signals. Moreover, the output amplifier is bandwidth capable of demodulating the envelope of an RF modulated signal up to 75MHz. The detector incorporates temperature compensation circuitry, enabling repeatable and stable RF power measurements under varying environmental conditions. The LTC5564's speed and frequency capabilities open up a wide range of useful applications, including microwave communications, telemetry, radar detectors, RF power amplifier monitoring and fault detection, automatic level control, test instrumentation and cellular networks. Summary of Features: LTC5564

  • Operating Frequency Range 600MHz to 15GHz
  • Ultrafast Detector Response Time 7ns
  • Dynamic Range 40dB
  • RF Input Power Range -24dBm to +16dBm
  • Built-in Fast Comparator 9ns
  • Temperature Compensated
  • Small Package 3mm x 3mm QFN
The LTC5564 can be powered from a single 3.3V or 5V supply. Normal operation draws a nominal current of 44mA. The device is rated for operation from -40°C to 85°C. The LTC5564 is offered in a small 3mm x 3mm 16-pin QFN package. For more information, visit