NCV78702MW0BR2G

Overview

The NCV78702MW0BR2G is a single-chip, high-efficiency boost controller designed for automotive LED lighting applications. It supports driving multiple LED strings up to 60V and integrates current-mode voltage boost control with input filtering capabilities. The device features SPI programmability for dynamic parameter adjustment and supports multiphase configurations (2-phase, 3-phase, or 4-phase) when combined with additional units. Key electrical parameters include an operating temperature range of -40°C to 150°C TJ, a supply voltage range of 5V to 30V, and a switching frequency of 350kHz. It utilizes a 24-QFN (4x4mm) package with exposed pad for surface mount installation.

Feature Summary

• Integrates current-mode voltage boost control and input filtering to minimize external component count.
• Supports multiphase boost operation by combining multiple devices to optimize filtering and reduce BOM cost.
• Features SPI interface for dynamic system parameter programming and flexible application platform support.
• Includes active input filtering to reduce battery current ripple and programmable input current limiting.

Applications

• Automotive headlight systems including high beam and low beam applications
• Daytime Running Light (DRL) circuits
• Smart power ballast designs for high-current LED arrays

Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel specifications, as variants exist within the NCV78702 family. Check manufacturer documentation for end-of-life status, as some suffixes may be discontinued. Ensure compatibility with AEC-Q100 requirements if automotive qualification is mandatory for the target application. Confirm SPI pinout and voltage levels against the specific datasheet revision before integration.

Selection Notes

Select this component for high-power automotive LED applications requiring efficient boost conversion and multiphase scalability. Consider the 24-QFN package for compact PCB layouts and thermal performance. Evaluate the need for SPI programmability to accommodate different LED string configurations without hardware changes. Compare against other series members like the AR2G variant if different packaging or availability is required.

Part Context

The NCV78702 belongs to onsemi's dedicated LED lighting driver IC series, engineered specifically for automotive front lighting systems. It addresses the demand for high efficiency and flexibility in modern vehicle illumination. The family includes various packages and suffixes tailored for different manufacturing and design constraints, maintaining core boost control functionality across variants.

Replacement Considerations

The NCV78702MW0AR2G is listed as a recommended replacement for the MW0BR2G variant. Verify pin-to-pin compatibility and functional equivalence before substitution. Review any updates in the datasheet or PCN documents associated with the replacement part to ensure no design changes impact the existing system architecture.

FAQ

What is the maximum output voltage supported by the NCV78702?

The device is designed to drive multiple LED strings with a maximum output voltage of 60V.

How does the NCV78702 support multiphase operation?

Multiple NCV78702 devices can be combined to implement 2-phase, 3-phase, or 4-phase boost configurations, optimizing filtering and reducing overall BOM cost.

Is the NCV78702 suitable for automotive applications?

Yes, it is AEC-Q100 qualified and PPAP capable, making it suitable for demanding automotive environments such as headlights and DRLs.