LT3990EMSE-5#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT3990EMSE-5#TRPBF is an automotive-grade 62V input, 5V/350mA step-down DC/DC converter with current-mode PWM control, AEC-Q100 qualification, and a 16-pin MSOP-EP package for wide-input vehicle and industrial power rails.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- LT3990EMSE-5#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.6100(MOQ 19)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 62V maximum input voltage supporting direct connection to 12V, 24V, and 48V automotive bus rails including load-dump transients
- Fixed 5V output at 350mA with current-mode PWM control providing fast transient response and cycle-by-cycle current limiting
- AEC-Q100 automotive-grade qualification ensuring reliable operation from -40°C to +125°C in harsh vehicle environments
- Compact 16-pin MSOP-EP package with exposed pad enabling high power density in space-constrained automotive ECU designs
Applications
The LT3990EMSE-5#TRPBF is designed for automotive ECU auxiliary power rails, CAN/LIN transceiver supplies, and 48V mild-hybrid system sensor power where a rugged wide-input step-down regulator generating a stable 5V is required. Its 62V input rating handles ISO 7637 load-dump transients on 12V and 24V vehicle buses without external clamping, simplifying the protection circuit design. The MSOP-EP package's small footprint allows integration directly on sensor module boards mounted near high-voltage automotive wiring harnesses.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1667 |
| 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 | R-PDSO-G16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.865A |
| Output Voltage-Max | 9.1V |
| Output Voltage-Min | 4.9V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 2760kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| 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 | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the LT3990EMSE-5#TRPBF handle automotive load-dump transients up to 62V on a 12V vehicle bus?
The LT3990EMSE-5#TRPBF is rated for input voltages up to 62V, which directly covers the ISO 7637-2 load-dump pulse of up to 60V on a 12V system. No external TVS diode or clamp circuit is required, unlike lower-voltage regulators that would be damaged by these transients. The device continues regulating to 5V at 350mA throughout the transient duration, maintaining CAN bus or sensor supply continuity.
What output current does the LT3990EMSE-5#TRPBF deliver and is 350mA sufficient for a dual-transceiver CAN node?
The LT3990EMSE-5#TRPBF delivers 350mA continuous at 5V. A typical dual-CAN transceiver node using two TJA1050 devices draws approximately 50mA active current, leaving over 300mA headroom for a microcontroller, LIN transceiver, and a local sensor — all from the single 5V output. For nodes with higher current demands, external power FETs can extend the output capability.
Does the LT3990EMSE-5#TRPBF pass AEC-Q100 qualification and what temperature grade covers under-hood mounting?
Yes, the LT3990EMSE-5#TRPBF carries AEC-Q100 Grade 1 qualification, covering -40°C to +125°C junction temperature. Under-hood automotive applications typically see ambient temperatures up to 105°C, and with the MSOP-EP exposed pad soldered to PCB copper, the device operates within the 125°C junction limit at full 350mA load with a 62V input, ensuring multi-year vehicle service life reliability.
How does the current-mode PWM topology in the LT3990EMSE-5#TRPBF improve transient response compared to voltage-mode control?
Current-mode control in the LT3990EMSE-5#TRPBF samples inductor current every switching cycle, which adds an inner feedback loop that immediately limits peak current during load steps. This inner loop halves the effective order of the power stage, allowing the outer voltage loop to be compensated with a simple RC network and achieving transient response 2x to 4x faster than a comparable voltage-mode design at the same switching frequency, keeping the 5V output within ±3% during sudden 100mA to 350mA load steps.
For a 48V mild-hybrid sensor module, when should the LT3990EMSE-5#TRPBF be preferred over a two-stage 48V-to-12V plus 12V-to-5V conversion chain?
The LT3990EMSE-5#TRPBF directly accepts 48V input and outputs 5V at 350mA in a single stage, eliminating the second regulator IC, its inductor, and decoupling capacitors compared to a two-stage approach. At 48V input and 350mA output, single-stage efficiency is approximately 80%, while a two-stage chain would have a combined efficiency of 70% to 75% due to cascaded losses — making the LT3990 the more thermally and spatially efficient choice for low-current 5V rails in 48V hybrid architectures.
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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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| 500+ | $3.9250 | $1962.50 |
| 1000+ | $3.6100 | $3610.00 |
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