MSR7805WUP series of miniature
switching voltage regulators provide up to 1.0-A output current. They are pin-compatible
with linear regulators such as the LM78xx but offer 95% efficiency and don’t
need a heat sink. Four standard models
operate from inputs that range from 6.0 to 36 Vdc, providing tightly
regulated outputs of 3.3, 5, –5, 12, –12,
15, or –15 Vdc.


as a miniature, unpotted (open-board)
unit, the regulator measures
0.689 x 0.453 x 0.295 in. Each model is specified for operation from –40°C
to 85°C with no heat sinking required. Cooling is by air convection. All
models are approved to EN 60950 and have continuous short circuit protection.
The MTBF of the regulator is greater than 2.0 Mh (per MIL HDBK 217F).