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Product Detailed Parameters
- Description：IC LED DRIVER CTRLR PWM 20HTSSOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Controller
- Topology：Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：5V
- Voltage - Supply (Max)：65V
- Voltage - Output：65V
- Current - Output / Channel：-
- Frequency：200kHz ~ 2.5MHz
- Dimming：Analog, PWM
- Applications：-
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-VSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：20-HTSSOP-B
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The BD18353EFV-ME2 is a single-channel automotive LED driver IC utilizing a boost topology. It operates within an input voltage range of 5 V to 65 V, supporting a maximum output voltage of 65 V. The switching frequency is adjustable from 200 kHz to 2.5 MHz. The device is housed in an HTSSOP-B-20 package and functions reliably across a temperature range of -40 °C to +125 °C.
Feature Summary
- Integrates high-side current detection with a 3.0 V precision reference for accurate regulation.
- Supports PWM dimming via internal generation or external P-MOSFET control alongside dual analog dimming modes.
- Includes spread spectrum frequency modulation to reduce electromagnetic interference peaks.
- Provides real-time fault reporting through the FAULT_B pin for open and short circuit conditions.
Applications
- Automotive headlight low beam driver circuits
- Automotive headlight high beam driver circuits
- Daytime running light modules
Procurement Notes
Verify that the specific suffix ME2 matches the required tape and reel packaging configuration for automated assembly lines. Confirm AEC-Q100 Grade 1 qualification status aligns with target automotive reliability standards. Ensure the HTSSOP-B-20 footprint dimensions are compatible with the intended PCB layout constraints before finalizing procurement orders.
Selection Notes
Select this component when designing single-channel boost converters requiring flexible dimming architectures. It is suitable for applications needing integrated EMC mitigation features without external spread spectrum generators. Choose this part if the design requires precise current sensing capabilities combined with comprehensive protection mechanisms for robust automotive lighting systems.
Part Context
This model belongs to the BD18353 series of high-current LED controllers designed specifically for automotive environments. It complements other variants like the BD18353MUF-ME2 by offering different packaging options while maintaining identical electrical performance characteristics and functional safety support capabilities for consistent product line integration.
Replacement Considerations
The BD18353MUF-ME2 serves as a direct alternative featuring a VQFN package. Verify thermal dissipation requirements and PCB land pattern compatibility when substituting between the HTSSOP-B-20 and VQFN form factors to ensure equivalent performance.
FAQ
How does the device manage electromagnetic interference?
It incorporates built-in spread spectrum frequency modulation to lower peak radiated emissions at the switching frequency, aiding compliance with automotive EMC standards.
What methods are supported for adjusting LED brightness?
The IC supports both PWM dimming using an internal generator or external P-MOSFET drive, as well as two independent analog dimming channels.
