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
What are the key features of LT3990EMSE-5#TRPBF?
- 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
What is LT3990EMSE-5#TRPBF used for?
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.
What are the specifications of LT3990EMSE-5#TRPBF?
| 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 |
Where can I find the LT3990EMSE-5#TRPBF datasheet?
LT3990EMSE-5#TRPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT3990EMSE-5#TRPBF?
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.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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
LT3062EDCB#TRPBF
Small Outline No-lead
Integrated Circuit
LT3062EDCB#TRMPBF
Small Outline No-lead
Integrated Circuit
LT8641IUDC#TRPBF
Other
Integrated Circuit
HMC412AMS8GTR
Small Outline Packages
Integrated Circuit
LT3062HMS8E#PBF
Small Outline Packages
Integrated Circuit
LT3062IMS8E#PBF
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $4.7800 | $90.82 |
| 500+ | $3.9250 | $1962.50 |
| 1000+ | $3.6100 | $3610.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit