AC/DC Converter - LS01-K3B05SS

22 январь 2026 г.

Product Overview
The LS01-K3B05SS is one of MORNSUN's highly efficient green power AC-DC converters. It features an ultra-wide input voltage range, accepting both DC and AC input, with high efficiency and low power consumption. This non-isolated, regulated single-output converter is designed for industrial control instrumentation, electric power applications, and smart home applications that require UL/CE safety certifications and have moderate EMC compliance requirements. For extremely harsh EMC environments, it is recommended to use the application circuit shown in the Design Reference section of this datasheet.

⚠️ Important Safety Warning
This is a non-isolated power supply. There is no insulation protection between the output and the input dangerous voltage. Beware of electric shock!

Key Features

Ultra-wide input voltage range: 85 - 305VAC and 70 - 430VDC.
Wide operating ambient temperature range: -40°C to +85°C.
Non-isolated & regulated single output.
Compact size, open frame design.
High reliability and green power design.
Industrial-grade robustness.
Flexible selection of EMC additional circuits simplifies customer PCB layout.
Protections: Output short circuit and over-current.

Selection Guide
The series includes one model: LS01-K3B05SS. It is EN certified with an output power of 2W. It provides a nominal output of 5V at 200mA. The typical efficiency at 230VAC is 57%, and the maximum capacitive load is 500uF.

Note: The product picture is for reference only. For details, please refer to the actual product.

Detailed Specifications
Input Specifications:

Input Voltage Range: AC Input: 85-305VAC; DC Input: 70-430VDC.
Input Frequency: 47-63 Hz.
Input Current (Max.): 0.12A at 115VAC; 0.06A at 277VAC.
Inrush Current (Typ.): 25A at 115VAC; 40A at 277VAC.
Recommended External Input Fuse: 1A/300V, slow-blow (required).
Hot Plug: Unavailable.

Output Specifications:

Output Voltage Accuracy: ±1.5% (Typ.), -7% to +3% (Max.) at 10%-100% load.
Line Regulation: ±1.5%.
Load Regulation: ±2.5%.
Ripple & Noise: 80mVp-p (Typ.), 150mVp-p (Max.), measured with 20MHz bandwidth using the “parallel cable” method.
Temperature Coefficient: ±0.12%/°C.
Standby Power Consumption: 0.3W (Max.) at 230VAC input.
Protections:
- Short Circuit: Hiccup mode, continuous, self-recovery.
- Over-current: ≥110% lo, self-recovery.
Minimum Load: 10%.

General Specifications:

Operating Temperature: -40°C to +85°C.
Storage Temperature: -40°C to +105°C.
Storage Humidity: Up to 95% RH (non-condensing).
Soldering Temperature: Wave-soldering (max. 10s): 255-265°C; Manual welding (max. 5s): 350-370°C.
Power Derating:
- Temperature: 2%/°C from -40°C to -20°C; 2.67%/°C from +70°C to +85°C.
- Input Voltage: 0.8%/VAC from 85VAC-110VAC; 1.1%/VAC from 277VAC-305VAC.
Safety Standard: BS EN62368-1/EN62368-1 (Report) Safety Approval; design refers to IEC/UL62368-1.
MTBF: >300,000 hours (MIL-HDBK-217F @25°C).

Mechanical & EMC Specifications:

Dimensions: 16.13 x 15.10 x 9.50 mm.
Weight: 4.2g (Typical).
Cooling Method: Free air convection.
EMC Performance: The product's emissions and immunity performance depend on the external application circuit. Refer to the datasheet for circuit diagrams to achieve CISPR32 Class A or Class B compliance for emissions, and specific immunity levels per IEC/EN61000-4-2, -4-3, -4-4, -4-5, -4-6, and -4-11.

Characteristic Curves & Application Notes
The datasheet includes Temperature Derating and Input Voltage Derating curves. Please note:

For AC input between 85-110VAC/277-305VAC or DC input between 70-130VDC/400-430VDC, output power must be derated according to the temperature derating curves.
This product is suitable for natural air cooling applications. For use in closed environments, consult MORNSUN FAE.
Detailed typical application and EMC-recommended circuits with component values (FUSE, C1, C2, L1, CX) are provided in the design reference section.
External electrolytic capacitors are required. The module needs to be glued and fixed after assembly.

Dimensions and Pinout