LT3990EDD#TRPBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
Analog Devices LT3990EDD#TRPBF is a 60 V, 350 mA current-mode PWM step-down switching regulator featuring ultra-low 2 µA quiescent current and integrated catch diode in a compact 3x3 mm DFN-10 package. It accepts an input voltage range of 4.2 V to 62 V and delivers regulated output with high efficiency across wide load ranges. Available in tape-and-reel format with worldwide in-stock availability for automotive and industrial power supply designs.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- LT3990EDD#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.5300(MOQ 19)
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 2 µA quiescent current enables extremely efficient operation in always-on battery-powered and automotive standby power supply designs
- Wide 4.2 V to 62 V input voltage range with integrated catch diode simplifies circuit design for 12 V to 48 V automotive and industrial bus systems
- Current-mode PWM control in compact 3x3 mm DFN-10 package delivers 350 mA regulated output with fast transient response and minimal external components
Applications
The LT3990EDD#TRPBF is ideal for automotive always-on power supplies, such as key-off standby circuits for body control modules and telematics units where the 2 µA quiescent current minimizes battery drain. Its 4.2 V to 62 V input range also makes it suitable for industrial 24 V and 48 V bus-powered sensor nodes, PLCs, and field instruments requiring a compact, efficient step-down regulator. The integrated catch diode and 3x3 mm DFN package simplify layout in space-constrained designs operating from wide-input voltage rails in harsh environments.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1699 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 62V |
| Input Voltage-Min | 4.2V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | S-PDSO-N10 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.865A |
| Output Voltage-Max | 3.366V |
| Output Voltage-Min | 3.234V |
| Output Voltage-Nom | 3.3V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2760kHz |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline No-lead |
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 | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range and output current capability of the LT3990EDD#TRPBF step-down regulator?
The LT3990EDD#TRPBF accepts an input voltage from 4.2 V to 62 V and delivers up to 350 mA of output current, making it suitable for 12 V automotive systems, 24 V industrial buses, and 48 V telecom power rails. Its current-mode PWM control provides excellent line and load regulation across this wide input range, allowing a single design to support multiple supply voltages without component changes.
How does the LT3990EDD#TRPBF's 2 µA quiescent current benefit automotive standby and battery-powered applications?
The 2 µA quiescent current of the LT3990EDD#TRPBF is critical for automotive key-off circuits, IoT sensor nodes, and battery-backed equipment where the regulator must remain active for weeks or months without depleting the battery. In a typical 12 V automotive system, 2 µA quiescent current draws only 24 µW, compared to 500 µW or more for conventional step-down regulators, extending battery standby time dramatically in body control module and telematics power supply designs.
What advantages does the integrated catch diode in the LT3990EDD#TRPBF provide in a 60 V step-down converter design?
The integrated catch diode eliminates the need for an external Schottky diode, reducing component count and PCB footprint in 60 V step-down applications. This simplifies layout by removing a discrete component that would otherwise need careful placement near the switching node, and the internal diode is rated to handle the 350 mA peak inductor current without additional thermal management, reducing BOM cost for industrial 48 V and automotive 36 V step-down power supply designs.
For a 24 V industrial sensor node design, how does the 3x3 mm DFN package of the LT3990EDD#TRPBF compare to SOT-23 or SOIC alternatives?
The 3x3 mm DFN-10 package of the LT3990EDD#TRPBF offers significantly smaller PCB area than an SOIC-8 (approximately 20 mm²) while providing an exposed thermal pad that enhances heat dissipation at 350 mA output current from a 24 V input. Compared to SOT-23 packages typically limited to 100 mA to 200 mA and fewer control pins, the DFN-10 format supports the full feature set including enable, feedback, and soft-start pins required for industrial 24 V step-down power supply designs.
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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.
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