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Product Detailed Parameters
- Description：IC LED DRIVER RGLTR PWM 14SSOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：9V
- Voltage - Supply (Max)：35V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：50kHz ~ 2MHz
- Dimming：Analog, PWM
- Applications：Backlight
- Operating Temperature：-40°C ~ 105°C
- Mounting Type：Surface Mount
- Package / Case：14-LSSOP (0.173", 4.40mm Width)
- Supplier Device Package：14-SSOP-B
- Grade：-
- Qualification：-
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Overview
The BD9408FV-E2 is a single-channel boost-type white LED driver IC designed for large LCD backlighting applications. It operates within an input voltage range of 9 V to 35 V and supports a maximum switching frequency of 150 kHz. The device features adjustable output voltage, PWM dimming capability, and analog dimming support ranging from 0.2 V to 3.0 V. Key protection mechanisms include over-boost protection, LED over-current protection (OCP), over-voltage protection (OVP), and over-duty protection (ODP). It includes adjustable soft start and oscillation frequency settings, housed in an SSOP-B14 package with an operating temperature range of -40 °C to +105 °C.
Feature Summary
- Integrates current mode LED protection circuits including over-boost, OCP, OVP, and ODP for enhanced system reliability.
- Supports wide-range analog dimming via control voltage and precise PWM dimming for flexible brightness control.
- Features adjustable soft start and oscillation frequency to optimize startup behavior and electromagnetic interference.
Applications
- White LED drivers for large LCD panel backlights
- Boost topology LED lighting systems requiring high input voltage ranges
- Industrial or automotive display backlighting units
Procurement Notes
Verify the current lifecycle status before procurement, as the BD9408FV series is designated as Not Recommended for New Designs (NRND) by ROHM Semiconductor. Confirm that existing inventory or last-time buy options meet project requirements. Ensure compatibility with the SSOP-B14 package dimensions and thermal characteristics during integration. Cross-reference specific suffixes if alternative versions are considered.
Selection Notes
Select this component for designs requiring a single-channel boost LED driver with robust protection features and wide input voltage tolerance. Consider the NRND status when planning long-term production runs. Evaluate the trade-off between the 150 kHz switching frequency and external component sizes. Verify that the required dimming range and protection thresholds align with the specific LED string configuration and system safety standards.
Part Context
The BD9408FV-E2 belongs to ROHM's family of DC/DC converter ICs specifically optimized for LED illumination. It utilizes a boost topology to step up lower input voltages to drive high-voltage LED strings. The device integrates power switches and control logic into a compact SSOP-B14 package, targeting applications where space efficiency and reliable LED current regulation are critical for display backlighting solutions.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the NRND status, direct replacements should be sourced from ROHM's current LED driver portfolio after verifying electrical pinout and functional compatibility.
