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Product Detailed Parameters
- Description：24CH LINEAR LED DRIVER EMBEDDED
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：-
- Topology：-
- Internal Switch(s)：No
- Number of Outputs：24
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：40V
- Voltage - Output：-
- Current - Output / Channel：125mA
- Frequency：-
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：48-VFSOP (0.240", 6.10mm Width) Exposed Pad
- Supplier Device Package：48-HTSSOP-C
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The BD18333EUV-ME2 is a 24-channel constant current LED driver designed for automotive lighting applications. It features an HTSSOP-C48 package and supports a minimum input voltage of 4.5V and a maximum of 40V, with a total output current capacity of 3000mA and per-channel drive up to 125mA. The device offers 256 PWM dimming steps and 256 DC dimming steps, communicating via UART at speeds up to 1MHz. It operates within a temperature range of -40°C to 125°C and complies with ISO 26262 ASIL-B functional safety standards.
Feature Summary
- Integrates 24 independent channels with combined 8-bit PWM and 8-bit local DC dimming capabilities for precise light control.
- Supports UART communication interface for flexible interaction with microcontrollers to manage complex lighting patterns.
- Developed in compliance with ISO 26262 design processes to ensure functional safety for automotive environments.
Applications
- Automotive animation lights including front and rear lamps
- Sequential turn signals for vehicle exterior lighting
- Position lights and Daytime Running Lights (DRL)
Procurement Notes
Verify the specific suffix ME2 against the manufacturer's official documentation to confirm package details and tape/reel specifications. Ensure the selected component aligns with the required ISO 26262 ASIL-B functional safety category for your target application. Cross-reference the datasheet for accurate operating temperature ranges and electrical limits before finalizing procurement.
Selection Notes
Select this component for designs requiring high channel density without external switching transistors. The integrated linear topology simplifies thermal management compared to buck-boost solutions but requires careful consideration of power dissipation. Verify that the UART interface speed meets the MCU's timing requirements for dynamic lighting effects.
Part Context
This part belongs to ROHM's automotive-grade LED driver portfolio, specifically engineered for advanced exterior lighting systems. It complements other series like the BD18330 and BD18332 by offering dedicated 24-channel linear driving capabilities. The product line focuses on reducing system complexity while maintaining high reliability for critical vehicle illumination functions.
Replacement Considerations
The BD18332EUV-M serves as a related alternative within the same family. Confirm compatibility regarding channel count and pinout configuration before substitution. Both parts share similar packaging and automotive qualification standards, ensuring consistent integration into existing board layouts.
