NCL30161MNTXG

Overview

The NCL30161MNTXG is a high-brightness LED buck controller utilizing average current hysteresis control. It operates within an input voltage range of 6.3 V to 40 V, extendable externally. The device supports switching frequencies up to 1.4 MHz and enables output ripple current control to 10% of the average current, allowing for capacitor-less or all-ceramic output designs. It features integrated protection mechanisms including adjustable LED current, short circuit protection, undervoltage lockout, and thermal shutdown.

Feature Summary

• Average current hysteresis control eliminates the need for output filtering capacitors while maintaining low LED ripple current.
• Supports wide dimming ranges through both PWM and analog dimming methods via a single pin interface.
• Operates at high switching frequencies to minimize external passive component size and board space.
• Includes comprehensive protection features such as thermal shutdown, LED short circuit detection, and input undervoltage lockout.

Applications

• Automotive lighting systems
• Industrial illumination fixtures
• General purpose LED drivers

Procurement Notes

Verify the specific suffix MNTXG against official onsemi documentation to confirm package type and reel specifications. Ensure compatibility with required operating temperature ranges and surface mount assembly processes. Cross-reference datasheet revisions to confirm pinout consistency and electrical parameter tolerances before finalizing procurement orders.

Selection Notes

Select this controller for applications requiring minimal external components and high efficiency in LED driving circuits. It is suitable for designs where output capacitance must be minimized or eliminated. Consider its input voltage range and frequency capabilities when designing the power stage. Verify that the chosen topology matches the inverted buck configuration described in the technical data.

Part Context

This component belongs to onsemi's portfolio of DC-DC LED drivers designed for efficient light management. It complements other devices like the NCL30160 by offering a controller solution rather than an integrated MOSFET option. The series targets markets demanding compact, high-performance lighting solutions with reduced bill-of-materials complexity.

Replacement Considerations

Consult official substitution guides for equivalent controllers from onsemi or other manufacturers. Verify functional compatibility regarding control topology and pin assignments before replacing.

FAQ

Does the NCL30161 require an output filter capacitor?

No, the average current hysteresis control allows for operation without an output filter capacitor, supporting all-ceramic output designs.

How is dimming controlled on this device?

Dimming is supported via both PWM and analog methods, managed through a single DIM/Enable pin.