LT3478IFE-1#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
LT3478IFE-1#PBF is a high-current boost LED driver capable of 4.5A output at up to 42V, switching at 2.25 MHz with True Color PWM dimming. It delivers precise LED current control in a 16-pin SSOP package. Available from stock worldwide with competitive pricing.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LT3478IFE-1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.9300(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4.5A maximum LED current drive capability
- 42V maximum input/output voltage range
- 2.25 MHz switching frequency reduces external filter size
- True Color PWM dimming for accurate color reproduction
- 16-pin SSOP package with thermal pad for heat dissipation
- Internal soft-start to limit inrush current at startup
Applications
The LT3478IFE-1#PBF is designed for high-brightness LED backlighting in LCD displays, automotive interior lighting, and studio or architectural color-mixing luminaires requiring True Color PWM dimming. Its 4.5A drive capability and 42V compliance make it suitable for multi-LED string drivers in signage and industrial lighting panels. The 2.25 MHz switching frequency keeps magnetics small, enabling compact form-factor designs.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1663 (BC) |
| YTEOL | 10 |
| Interface IC Type | LED DISPLAY DRIVER |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Multiplexed Display Capability | NO |
| Number of Functions | 1 |
| Number of Segments | 6 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max | 36V |
| Supply Voltage-Min | 2.8V |
| Supply Voltage-Nom | 2.7V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 2.25 MHz switching frequency of LT3478IFE-1#PBF benefit PCB layout compared to lower-frequency LED drivers?
Operating at 2.25 MHz allows LT3478IFE-1#PBF to use inductors as small as 2.2 µH and capacitors under 10 µF, significantly reducing board area compared to 200–500 kHz drivers that require 10–22 µH inductors. This makes the part ideal for space-constrained LED driver modules.
What PWM dimming range does LT3478IFE-1#PBF support, and why does True Color PWM dimming matter for display applications?
LT3478IFE-1#PBF supports True Color PWM dimming with a wide dimming ratio exceeding 1000:1, maintaining constant LED peak current of up to 4.5A at each pulse. This preserves LED color point across the full brightness range, which is critical for LCD backlights and studio lighting where color accuracy at all dimming levels is required.
When should a designer choose LT3478IFE-1#PBF over a lower-voltage LED driver for an automotive interior lighting application?
Automotive 12V systems can swing from 6V to 42V during load dumps and cold-crank events. LT3478IFE-1#PBF's 42V maximum rating and 4.5A output handle these transients without external clamping circuitry, making it a direct fit for interior accent lighting strings that must survive the full automotive voltage envelope.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $12.9200 | $12.92 |
| 10+ | $8.9140 | $89.14 |
| 19+ | $7.8600 | $149.34 |
| 1000+ | $5.9300 | $5930.00 |
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