µModule regulator suitable for imaging and RF systems

18th October 2017
Alice Matthews

A 40VIN, 2A µModule step-down regulator in a 6.25x4mm BGA package has been announced by Analog Devices, which recently acquired Linear Technology. The LTM8063's package size is 75% smaller than the existing equivalent product. With two 0805 size capacitors and two 0603 size resistors, the solution is only 70mm2 The Silent Switcher architecture minimises EMI emissions, enabling the LTM8063 to pass the CISPR 22 class B EMC standard.

The LTM8063 can deliver 2A (2.5A peak) of continuous output current from 12VIN to 5VOUT at an ambient temperature of 85°C. Its 40V input voltage allows it to safely operate from unregulated or fluctuating 12-24V input supplies in noisy environments such as avionics, factory automation and industrial robotics. The output voltage is adjustable with one resistor from 0.8-15V. This wide output voltage range provides the versatility of using one product to generate low voltage rails such as I/O and auxiliary voltages of digital ICs and common system bus voltages of 3.3, 5 and 12V.

The switching frequency can be set by an external single resistor ranging from 200kHz to 2.2MHz or can be synchronised to an external clock. The LTM8063 has four operating modes: Burst Mode operation, pulse-skipping mode, pulse-skipping mode with spread spectrum modulation and external sync mode. The combination of Silent Switcher architecture, wide operating frequency range, and multiple operating modes minimises the risk of electromagnetic interference, suitable for noise- sensitive signal processing applications including imaging and RF systems.

Key features:

  • Low noise Silent Switcher architecture
  • Wide input voltage range: 3.2-40V
  • Wide output voltage range: 0.8-15V
  • 2A continuous output current, 2.5A peak
  • Selectable switching frequency: 200kHz to 2.2MHz
  • External synchronisation
  • Programmable soft-start
  • Tiny, low profile 6.25×4×2.22mm RoHS compliant BGA package.

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