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, ineffi cient, LM7805 and LM7812 linear regulators. The 78XXSRs 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.

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

7805SR-C属于电源 - 板安装 > 直流转换器。村田制作所制造生产的7805SR-C直流转换器一种旨在将直流电压输入电平改变为一个或多个不同的直流电压输出电平的装置。