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The LM3485MM is a switching regulator manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from the Manufactor Datasheet:

Manufacturer:

• NS (National Semiconductor)

Part Number:

• LM3485MM

Pb-Free Specifications:

• The LM3485MM is Pb-free (Lead-free) and complies with RoHS (Restriction of Hazardous Substances) standards.

Descriptions:

• The LM3485MM is a wide input voltage range (4.5V to 35V), current-mode boost/SEPIC/flyback DC-DC converter with an integrated 75V, 0.5A switch.
• It is designed for high-efficiency step-up (boost) and other topologies such as SEPIC and flyback converters.
• The device operates at a fixed switching frequency of 550kHz and includes cycle-by-cycle current limiting for protection.

Features:

1. Wide Input Voltage Range: 4.5V to 35V

2. Integrated 75V, 0.5A N-Channel MOSFET

3. Adjustable Output Voltage (Up to 75V)

4. Fixed 550kHz Switching Frequency

5. Current-Mode Control for Improved Stability

6. Cycle-by-Cycle Current Limiting

7. Thermal Shutdown Protection

8. Low Shutdown Current (<1µA)

9. Available in an 8-Pin MSOP (MM) Package

10. Pb-Free and RoHS Compliant

This information is based solely on the manufacturer's datasheet and specifications.