LT8711IFE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LT8711IFE#PBF is an automotive-grade single-output step-down/step-up DC/DC switching controller with current-mode PWM, 4.5 V to 42 V input range, 825 kHz switching frequency, housed in a 20-pin TSSOP EP package for wide-input automotive and industrial power conversion.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LT8711IFE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8100(MOQ 1)
- 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 LT8711IFE#PBF?
- Step-down/step-up (4-switch buck-boost) topology over 4.5 V to 42 V input range
- 825 kHz current-mode PWM switching frequency
- AEC-Q100 automotive qualified for harsh environment designs
- 12 V nominal input, 42 V maximum for automotive transient protection
- 20-pin TSSOP EP package with exposed pad for thermal management
- Supports wide-input battery and automotive supply rails
What is LT8711IFE#PBF used for?
The LT8711IFE#PBF is designed for automotive DC/DC converter applications where the output voltage must remain regulated above, below, or equal to the battery input, such as 12 V automotive bus supplies and start-stop system power rails. Its 4-switch buck-boost architecture and 42 V input tolerance handle load-dump transients and cold-crank conditions in car infotainment, ADAS, and lighting systems.
What are the specifications of LT8711IFE#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1663 (CB) |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 42V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| 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-BOOST |
| Switching Frequency-Max | 825kHz |
| 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 | Malaysia |
Where can I find the LT8711IFE#PBF datasheet?
LT8711IFE#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT8711IFE#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why would an automotive power designer choose a buck-boost controller like the LT8711IFE#PBF over a simple buck converter?
In automotive start-stop systems, the battery voltage can dip below 6 V during engine cranking while the regulated output must remain at 12 V, and can rise above 16 V during load-dump transients. A standard buck converter cannot regulate when input equals or falls below the output, but the LT8711IFE#PBF 4-switch topology operates seamlessly from 4.5 V to 42 V input, maintaining a stable output across the entire automotive voltage window.
What switching frequency does the LT8711IFE#PBF use and how does this affect the size of the external inductors and capacitors?
Operating at 825 kHz, the LT8711IFE#PBF allows the use of smaller inductors and filter capacitors compared to controllers running at 200–400 kHz, reducing BOM size and PCB area in space-constrained automotive ECU designs. The higher frequency also pushes switching ripple well above the audible range, which is beneficial for noise-sensitive in-cabin applications.
How does the LT8711IFE#PBF thermal package feature support high-power automotive converter designs?
The 20-pin TSSOP package includes an exposed thermal pad (EP) on the underside that conducts heat directly to the PCB copper pour, achieving significantly lower junction-to-board thermal resistance than a standard TSSOP-20. This enables the LT8711IFE#PBF to drive high-current external MOSFETs at elevated ambient temperatures up to the automotive 125 °C rating without exceeding the thermal limits of the controller IC.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.8800 | $7.88 |
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