7812SR-C DC/DC converter 78XXSR, 1 W, 12 V, 400 mA, SIL, Single

12V Outputs High-Effi ciency Switching Regulators with LM78xx Pinouts

Input voltage range: 15 - 36 V DC Output voltage: 12.0V DC Output Current: 0.4 A

3.3V/5V/12V Outputs High-Effi ciency Switching Regulators with LM78xx Pinouts

Description: Murata Power Solutions’ 7805SR-C (5V output), 7812SR-C (12V output) and 7803SR-C (3.3V output) step-down switching regulators are modern drop-in replacements for older, inefficient, LM7805 and LM7812 linear regulators. The 78XXSR's are pin- and size-compatible with industry-standard TO-220 SIP packages. A 260kHz switching frequency provides for effi ciencies as high as 95%. Full-load (up to 0.5A) operation from 9V, 12V, 24V, or 36V supplies at ambient temperatures up to +70°C requires no heat sinks, no temperature derating, no forced-air cooling, and no external capacitors. 78SR switching regulators provide many signifi cant improvements over their linear counterparts: lower quiescent current (3mA vs. 5 mA), higher input voltage (40V vs. 32V), and better output accuracy (±2% vs. ±5%). All these features combine to make 78SR regulators ideal for new or existing LM7805 & LM7812 applications requiring full-load operation at elevated voltages.

Features - 3.3V/0.5A, 5V/0.5A or 12V/0.4A outputs; Pin and size-compatible with LM7805 & LM7812 regulators - Up to 95% effi ciency - no heat sinks or thermal derating required - Two SIP-packages fi t existing TO-220 footprints: - Vertical-pin models occupy less than 0.1 square in. - Optional horizontal pins provide 0.350 in. installed height - +7.5-36Vdc operating input range; Low 3mA quiescent current - Built-in fi lter capacitors - no external components required - -40 to +70°C operation at full load; Short-circuit protection - Excellent load (±0.2%) and line (±0.3%) regulation - Ideal for powering instrumentation from 9V/12V/24V/28V supplies or batteries - Can be used with unregulated dc supplies protection