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PoL converters feature ultra-wide input in compact package

Thu, 06/10/2010 - 9:40am
oki-78srMurata Power Solutions has expanded its range of Okami non-isolated point-of-load (PoL) DC-DC converters with the introduction of the OKI-78SR series of switching regulator converters for industrial applications. A direct drop-in replacement for industry standard three-terminal 7803 and 7805 series LDOs, the series offers ultra-wide input voltage range (7 to 36VDC) for nominal 24Vin with either 3.3 or 5V output voltage, depending on the model. The OKI-78SR series offer efficiency levels up to 90.5%; a significant advantage over traditional LDO solutions.

The OKI-78SR series’ small footprint, vertical SIP-mount package is in industry standard TO-220 format, with dimensions of just 10.4 x 16.5mm, making these converters ideal for use in space-constrained applications. The converters can support up to 500uF ceramic load capacitance, helping to control output noise.

Additional performance features include quick transient response to step loads, stable no-load operation and outstanding thermal derating performance over the operating temperature range (-40 to +85ºC). The converters’ design incorporates under-voltage lockout, over-current and over-temperature protection. The new modules meet the requirements of UL/EN/IEC 60950-1 safety approvals and EMI/RFI certifications are available.

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