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BD9411F-E2 Equivalent & Substitute Parts
Part Overview
The BD9411F-E2 is an LED Driver IC manufactured by Rohm Semiconductor, classified as a Power Management PMIC. This device functions as a DC DC Controller with Step-Up (Boost) topology, designed for single-output LED driver applications with analog and PWM dimming capabilities. The part is currently in active production status with 55,100 units in stock. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate different packaging or performance requirements across various lighting applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | BD9411F-E2 |
| Manufacturer | Rohm Semiconductor |
| Category | Power Management (PMIC) |
| Type | DC DC Controller |
| Topology | Step-Up (Boost) |
| Number of Outputs | 1 |
| Voltage Supply Range | 9V to 35V |
| Frequency | 150 kHz |
| Dimming | Analog, PWM |
| Operating Temperature | -40°C to 105°C |
| Package / Case | 18-SOIC (0.213", 5.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the BD9411F-E2 are selected based on the following critical parameters that determine functional compatibility:
Primary Substitution Criteria:
- DC DC Controller type with single output
- Step-Up (Boost) topology or multi-topology support including Step-Up (Boost)
- Analog and/or PWM dimming capability
- Supply voltage range overlap with 9V to 35V specification
- Surface mount packaging
- Active product status
- ROHS3 compliance
Secondary Considerations:
- Operating temperature range (minimum -40°C required)
- Frequency range compatibility (100 kHz to 1 MHz acceptable)
- Package form factor (18-SOIC preferred, but 16-SOIC, 16-QFN, 28-QFN acceptable for board redesign scenarios)
- MSL rating and moisture sensitivity
The substitute parts listed below meet the primary criteria and represent valid alternatives for LED driver applications requiring Step-Up (Boost) DC DC control with PWM or analog dimming.
Parameter Comparison
| Parameter | BD9411F-E2 | AP3041MTR-G1 | LED6001TR | LT3743EUFD#TRPBF | LT3755EUD-2#PBF | LT3756EMSE-1#TRPBF | LT3922EUFD#PBF |
|---|---|---|---|---|---|---|---|
| Manufacturer | Rohm Semiconductor | Diodes Incorporated | STMicroelectronics | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Type | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller |
| Topology | Step-Up (Boost) | Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck) | Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost) | Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost) | Step-Up (Boost) |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage Supply (Min) | 9V | 5V | 5.5V | 6V | 4.5V | 6V | 2.8V |
| Voltage Supply (Max) | 35V | 27V | 36V | 36V | 40V | 100V | 36V |
| Frequency | 150 kHz | 100 kHz - 1 MHz | 100 kHz - 1 MHz | 200 kHz - 1 MHz | 100 kHz - 1 MHz | 100 kHz - 1 MHz | 200 kHz - 2 MHz |
| Dimming | Analog, PWM | PWM | Analog, PWM | PWM | Analog, PWM | Analog, PWM | Analog, PWM |
| Operating Temperature (Min) | -40°C | -40°C | -40°C | -40°C | 0°C | -40°C | -40°C |
| Operating Temperature (Max) | 105°C | 85°C | 125°C | 125°C | 125°C | 125°C | 125°C |
| Package / Case | 18-SOIC (0.213", 5.40mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 28-WFQFN Exposed Pad | 16-WFQFN Exposed Pad | 16-TFSOP (0.118", 3.00mm Width) Exposed Pad | 28-WFQFN Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 3 (168 Hours) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All substitute parts listed are active products with ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the BD9411F-E2.
AP3041MTR-G1 (Diodes Incorporated): Direct topology match with Step-Up (Boost) configuration. Supply voltage range 5V to 27V overlaps the BD9411F-E2 specification. PWM dimming supported. Operating temperature maximum of 85°C is lower than the main part. MSL rating of 3 requires controlled storage conditions. Suitable for applications not requiring the full -40°C to 105°C range.
LED6001TR (STMicroelectronics): Multi-topology support including Step-Up (Boost). Supply voltage range 5.5V to 36V provides broader compatibility. Supports both analog and PWM dimming. Operating temperature range -40°C to 125°C exceeds main part specification. Automotive grade qualification available. MSL rating of 3. Suitable for designs requiring extended temperature performance or topology flexibility.
LT3743EUFD#TRPBF (Analog Devices Inc.): Step-Down (Buck) topology differs from main part Step-Up (Boost) configuration. Not recommended as direct substitute for boost applications. Supply voltage range 6V to 36V. PWM dimming only (no analog dimming). Operating temperature -40°C to 125°C. MSL rating 1 (Unlimited). Suitable only for buck converter applications.
LT3755EUD-2#PBF (Analog Devices Inc.): Multi-topology support including Step-Up (Boost). Supply voltage range 4.5V to 40V provides extended lower voltage capability. Analog and PWM dimming supported. Operating temperature range 0°C to 125°C (minimum 0°C, not -40°C). MSL rating 1 (Unlimited). Suitable for applications not requiring full -40°C minimum temperature.
LT3756EMSE-1#TRPBF (Analog Devices Inc.): Multi-topology support including Step-Up (Boost). Supply voltage range 6V to 100V provides extended high-voltage capability. Analog and PWM dimming supported. Operating temperature -40°C to 125°C. MSL rating 1 (Unlimited). Suitable for high-voltage LED driver applications.
LT3922EUFD#PBF (Analog Devices Inc.): Step-Up (Boost) topology match. Supply voltage range 2.8V to 36V provides extended lower voltage capability. Analog and PWM dimming supported. Operating temperature -40°C to 125°C. Automotive grade qualification. MSL rating 1 (Unlimited). Current output rating 2.3A specified. Suitable for automotive lighting applications and designs requiring lower input voltage.
Frequently Asked Questions (FAQ)
Q: Can AP3041MTR-G1 directly replace BD9411F-E2 in existing designs?
A: AP3041MTR-G1 shares the same DC DC Controller type and Step-Up (Boost) topology. However, the package differs (16-SOIC vs. 18-SOIC), requiring PCB layout modification. Operating temperature maximum is 85°C versus 105°C for the main part. MSL rating is 3 instead of 1, requiring controlled storage. Electrical compatibility exists within the specified voltage and frequency ranges.
Q: Which substitute part has the broadest voltage range compatibility?
A: LT3756EMSE-1#TRPBF supports 6V to 100V supply voltage, the widest range among all substitutes. This part is suitable for applications requiring extended high-voltage operation beyond the BD9411F-E2 specification of 9V to 35V.
Q: Are all substitute parts suitable for -40°C minimum operating temperature?
A: No. LT3755EUD-2#PBF has a minimum operating temperature of 0°C, not -40°C. All other substitutes support -40°C minimum. Verify application temperature requirements before selection.
Q: What is the impact of different package types on substitution?
A: Package differences require PCB redesign. BD9411F-E2 uses 18-SOIC (5.40mm width). Substitutes use 16-SOIC, 16-TSSOP, 16-TFSOP, 16-QFN, or 28-QFN packages. Pin count and layout differ significantly. Direct socket replacement is not possible without board modification.
Q: Which substitute parts support both analog and PWM dimming like the main part?
A: LED6001TR, LT3755EUD-2#PBF, LT3756EMSE-1#TRPBF, and LT3922EUFD#PBF all support both analog and PWM dimming. AP3041MTR-G1 and LT3743EUFD#TRPBF support PWM dimming only.
Q: What is the significance of MSL rating differences?
A: BD9411F-E2 has MSL 1 (Unlimited moisture sensitivity level), allowing indefinite shelf storage without baking. AP3041MTR-G1 and LED6001TR have MSL 3 (168 hours), requiring controlled storage and potential baking before reflow. All other substitutes have MSL 1. MSL rating affects supply chain handling and manufacturing processes.
Q: Can LT3743EUFD#TRPBF replace BD9411F-E2 in boost applications?
A: No. LT3743EUFD#TRPBF uses Step-Down (Buck) topology, not Step-Up (Boost). This part is designed for voltage reduction, not voltage boost. It is not suitable for applications requiring boost conversion.
Q: Which substitute offers automotive-grade qualification?
A: LED6001TR and LT3922EUFD#PBF both carry automotive grade qualification. These parts are suitable for automotive lighting applications requiring automotive-grade component certification.
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