Power supplies cope with humidity, altitude of 5000m

The series can be used not only in normal operating conditions but also in applications with requirements for higher input voltage, temperature, humidity, altitude, and EMI (electromagnetic interference).

The input voltage range of the LM-23B series is 85 V_AC to 305 V_AC/100 V_DC to 430 V_DC, which solves the three major shortcomings of conventional 85 V_AC to 264 V_AC input products.

The extended range covers the standard input voltages of 110 V_AC, 220 V_AC, and277 V_AC.

The LM-23B can withstand voltage fluctuations in distribution power grids and generators. They can maintain normal operation even when high input voltage transients are present.

The series meets the requirements for 5000 m altitude applications and has passed a high/low-temperature altitude test and long-term aging test.

With a wide operating temperature range of -30°C to +70°C these power supplies have a strong start-up ability while at a low temperature of -30°C and when they are running at +70°C, the temperature rise of components is still low which allows for a long service life.

Extended isolation voltages are as high as 4000 V_AC, no-load power as low as 0.5 W, and efficiency as high as 88%.

These devices adopt a double Y design and meets IEC/EN/UL62368/CCC certification standards.

The power supplies accept AC or DC input (dual-use of same terminal) and offer efficiency up to 88%. They are designed to meet EN61558.

Operating altitude is up to 5000 m, and the power supplies can withstand 335 V_AC surge input for 5 seconds

Applications include industrial controls, LEDs, street light controls, security, telecommunications and smart homes.

The power supplies are available now from Digi-Key Electronics in the EMEA region, the Americas and the Asia-Pacific region.