The WR Series of fully regulated, 2:1 input voltage dc-to-dc converters delivers 7.5W in an industry-standard 24-pin DIP with dimensions of 1.25" x 0.8" x 0.4". Operating efficiency is 83% and operating temperature range is -25°C to 71°C using natural convection cooling. The series includes 18 models with single or dual outputs of 5, 12 or 15 vdc from input voltages of 9 to 18, 18 to 36 or 36 to 72 vdc. Output isolation is greater than 1500 vdc and ripple and noise on the output is less than 75 mVpk-pk. Voltage accuracy is better than 1% and line regulation is 0.2% max. with load regulation 0.5% max. Voltage balance on dual outputs is 1% maximum.