LTC3871ELXE-1#PBF Analog Devices Integrated Circuit (Quad Flat Packages) In Stock
The LTC3871ELXE-1#PBF is an automotive-grade synchronous step-down DC/DC controller from Analog Devices, operating at 550 kHz with current-mode PWM control. It drives external N-channel MOSFETs and supports wide input voltage ranges for demanding 48V automotive applications. Housed in a 48-pin LQFP EP package with AEC-Q100 qualification for reliability.
- Manufacturer
- Analog Devices
- Package
- Quad Flat Packages
- Pin Count
- 48
- Lifecycle
- ACTIVE
- Datasheet
- LTC3871ELXE-1#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.3100(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 LTC3871ELXE-1#PBF?
- 550 kHz fixed-frequency current-mode PWM control for stable operation in 48V automotive step-down power conversion
- Automotive AEC-Q100 qualified for use in harsh thermal environments from -40°C to +125°C
- 48-pin LQFP EP package with exposed pad for enhanced thermal dissipation in high-current designs
What is LTC3871ELXE-1#PBF used for?
The LTC3871ELXE-1#PBF is designed for automotive 48V mild hybrid systems, DC/DC converters in electric vehicles, and advanced driver assistance systems requiring efficient high-voltage step-down regulation. It is also applicable in industrial power supplies and telecom infrastructure where reliable current-mode control at 550 kHz delivers low ripple and fast transient response. Its AEC-Q100 rating ensures long-term performance in temperature-cycling conditions from -40°C to +125°C.
What are the specifications of LTC3871ELXE-1#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1832 |
| Date Of Intro | 2018-12-11 |
| YTEOL | 9 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| JESD-30 Code | S-PQFP-G48 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | FLATPACK, HEAT SINK/SLUG, LOW PROFILE, FINE PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Where can I find the LTC3871ELXE-1#PBF datasheet?
LTC3871ELXE-1#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC3871ELXE-1#PBF?
Compatible alternatives and drop-in replacements for LTC3871ELXE-1#PBF:
suggested
suggested
Frequently Asked Questions
What switching frequency does LTC3871ELXE-1#PBF operate at and why does it matter for filter design?
The LTC3871ELXE-1#PBF operates at a fixed 550 kHz switching frequency, allowing designers to use smaller inductors and output capacitors while maintaining low ripple voltage in compact 48V automotive DC/DC converter designs.
For which automotive temperature grade is LTC3871ELXE-1#PBF qualified?
The LTC3871ELXE-1#PBF is AEC-Q100 Grade 1 qualified, supporting operation across -40°C to +125°C junction temperature range, making it suitable for under-hood automotive environments and electric vehicle power systems.
How does the current-mode PWM control benefit the LTC3871ELXE-1#PBF in 48V step-down applications?
Current-mode PWM control in the LTC3871ELXE-1#PBF provides inherent cycle-by-cycle current limiting, faster load transient response, and simplified loop compensation compared to voltage-mode controllers at 550 kHz in 48V automotive supplies.
What package does LTC3871ELXE-1#PBF use and how many pins does it have?
The LTC3871ELXE-1#PBF is housed in a 48-pin LQFP EP (exposed pad) package, with the thermal pad improving heat dissipation for high-current step-down converters operating from 48V automotive supply rails.
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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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