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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 28HTSSOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：5V
- Voltage - Supply (Max)：30V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：300kHz
- Dimming：PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-VSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：28-HTSSOP-B
- Grade：Automotive
- Qualification：-
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Overview
The BD8381AEFV-ME2 is a single-channel LED lighting driver IC designed for automotive forward illumination applications, including high-beam, low-beam, and daytime running light circuits. It utilizes a buck-boost topology to manage input voltages ranging from 5 V to 30 V. The device integrates a DC/DC controller with PWM dimming capabilities, supporting frequencies between 100 kHz and 600 kHz. It operates within an extended temperature range of -40°C to +125°C and is housed in an HTSSOP-B-28 package.
Feature Summary
- Integrates a flexible buck-boost DC/DC converter suitable for diverse automotive headlamp configurations
- Supports precise brightness control through pulse width modulation (PWM) dimming signals
- Includes built-in protection mechanisms such as over-voltage, over-current, and thermal shutdown
Applications
- Automotive high-beam headlamp circuits
- Automotive low-beam headlamp circuits
- Daytime running light (DRL) systems
Procurement Notes
Verify the specific suffix ME2 against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Confirm that the HTSSOP-B-28 package matches your PCB footprint requirements. Ensure the design supports the required 100 kHz to 600 kHz switching frequency range for your application.
Selection Notes
Select this component when a single-channel solution is required for automotive forward lighting with variable input voltage conditions. The buck-boost topology allows operation across wide supply variations typical in vehicle electrical systems. Consider the integrated DC/DC controller if external power stages are undesirable for space or efficiency reasons.
Part Context
This part belongs to ROHM’s automotive LED driver portfolio, specifically engineered for exterior lighting. It complements other series like the BD8374EFJ for rear lamps by offering specialized buck-boost regulation for forward illumination. The product line emphasizes functional safety support and compliance with automotive reliability standards.
Replacement Considerations
Check for direct cross-references in ROHM’s updated product lists. Verify if newer revisions of the BD8381 series offer improved thermal performance or updated packaging options while maintaining pin compatibility.
