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BD18353EFV-ME2

BD18353EFV-ME2

Rohm Semiconductor
LED Driver IC 1 Output DC DC Controller Step-Up (Boost) Analog, PWM Dimming 20-HTSSOP-B
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Overview

The BD18353EFV-ME2 is an AEC-Q100 qualified synchronous boost DC-DC controller specifically engineered to drive high-brightness LEDs in automotive applications. It supports a wide input voltage range from 5V to 65V and features integrated PWM signal generation and spread spectrum frequency modulation to minimize electromagnetic interference.

Why Choose This Part

This controller offers exceptional thermal and EMI performance through integrated spread spectrum frequency modulation and a wide switching frequency range of 200kHz to 2.5MHz. It provides robust protection features including over-voltage, short-circuit protection, and a rail-to-rail current sense amplifier for high-accuracy current regulation.

Applications

Automotive Exterior Lighting
Ideal for driving high-power LED strings in headlights, including high beam, low beam, and fog lamp assemblies.
Daytime Running Lights (DRL)
Features a dedicated DRL mode for 100% duty cycle operation and dual-system analog dimming for position light transitions.
Turn Signals and Rear Lamps
Reliable current control for safety-critical signaling with built-in fault reporting via the FAULT_B pin.

Key Specifications

Type DC DC Controller
Dimming Analog, PWM
Topology Step-Up (Boost)
Frequency 200kHz ~ 2.5MHz
Mounting Type Surface Mount
Package / Case 20-VSSOP (0.173", 4.40mm Width) Exposed Pad
Voltage - Output 65V
Number of Outputs 1
Internal Switch(s) No
Operating Temperature -40degC ~ 125degC (TA)
Voltage - Supply (Max) 65V
Voltage - Supply (Min) 5V
Supplier Device Package 20-HTSSOP-B

Getting Started

When designing with this IC, ensure the thermal pad of the 20-HTSSOP package is soldered to a large ground plane to manage heat at high output voltages up to 65V. Engineers should utilize the built-in PWM generator to simplify MCU firmware requirements for dimming control.

Also Consider

TPS92692-Q1 TITexas Instruments - A widely used automotive boost/SEPIC LED controller with similar analog and PWM dimming flexibility.