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Product Detailed Parameters
- Description：IC WHITE LED DRIVER SOP28
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：6
- Voltage - Supply (Min)：9V
- Voltage - Supply (Max)：35V
- Voltage - Output：-
- Current - Output / Channel：500mA
- Frequency：100kHz ~ 800kHz
- Dimming：Analog, PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：28-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：28-SOP
- Grade：-
- Qualification：-
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Overview
The BD9420F-GE2 is a white LED driver IC designed for large LCD panels, manufactured by ROHM Semiconductor. It utilizes a boost topology to drive up to six output channels with a constant current of 120 mA per channel. The device operates within an input voltage range of 9 V to 35 V and features an adjustable switching frequency of 800 kHz. It supports adjustable output voltage and includes soft start functionality. The component is housed in a SOP-28 package, rated for surface mount installation, and functions reliably across a temperature range of -40°C to +85°C.
Feature Summary
- Six-channel constant current output capability for uniform LED illumination
- Integrated boost DC/DC converter topology for efficient power conversion
- Adjustable switching frequency allows optimization for external component selection
- Built-in soft start function reduces inrush current during initialization
Applications
- White LED backlight drivers for large LCD panels
- Industrial display systems requiring multi-channel LED control
- Commercial signage utilizing high-brightness LED arrays
Procurement Notes
Verify the NRND (Not Recommended for New Designs) status before integration into new products. Confirm RoHS compliance details and check for alternative lead-free packaging options if required. Ensure supply chain stability due to potential end-of-life constraints. Validate pinout compatibility with existing SOP-28 footprints during design review.
Selection Notes
Select this component when designing systems requiring six independent LED channels driven from a single boost converter. The 120 mA output current suits medium-to-high brightness applications. Consider the 800 kHz switching frequency for balancing EMI and filter size. Verify that the 9V to 35V input range matches the system power supply architecture.
Part Context
This part belongs to ROHM's LED lighting driver series, specifically optimized for large screen displays. It integrates power MOSFETs and control logic into a single SOP-28 package. The family focuses on simplifying board space and reducing external component count for multi-string LED backlights.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Due to the NRND status, direct cross-referencing requires consulting official ROHM replacement guides or engineering support for equivalent performance specifications.
