LT8471IUFD#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
LT8471IUFD#PBF is an Analog Devices dual multitopology current-mode PWM DC/DC controller with dual 2.5 A internal switches and a 2.6 V to 50 V input range, housed in a 28-pin QFN package. It supports buck, boost, SEPIC, and inverting topologies simultaneously on two independent channels with clock synchronization. Available in industrial temperature grade with worldwide distribution.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LT8471IUFD#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.6700(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 LT8471IUFD#PBF?
- Dual independent channels each with a 2.5 A internal switch support buck, boost, SEPIC, and inverting topologies from a 2.6 V to 50 V input
- Current-mode PWM control with clock synchronization input enables noise-sensitive multi-rail power supply designs with low ripple
- Skyhook channel option supports voltage-mode control for improved transient response in high-output-capacitance rails
- Industrial temperature grade (-40°C to 125°C) in a compact 28-pin QFN for demanding automotive and industrial applications
What is LT8471IUFD#PBF used for?
LT8471IUFD#PBF is used in multi-rail industrial power supplies, automotive battery-to-logic converters, and telecom equipment where two independently configurable switching rails are needed from a single wide-input IC. Its dual multitopology architecture allows one channel to implement a 12 V boost converter while the second generates a -5 V inverting rail, eliminating a second regulator IC and reducing BOM cost. The 2.6 V to 50 V input range makes it suitable for 12 V, 24 V, and 48 V bus architectures in factory automation, electric vehicle auxiliary supplies, and industrial sensor platforms.
What are the specifications of LT8471IUFD#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1712 |
| YTEOL | 10 |
| Additional Feature | VOLTAGE MODE ALSO AVAILABLE FOR SKYHOOK CHANNEL |
| Analog IC - Other Type | DUAL SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 50V |
| Input Voltage-Min | 2.6V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PQCC-N28 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 3.2A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 2050kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat 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 |
Where can I find the LT8471IUFD#PBF datasheet?
LT8471IUFD#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT8471IUFD#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range and switch current does LT8471IUFD#PBF support across both channels?
LT8471IUFD#PBF accepts input voltages from 2.6 V to 50 V on both channels and integrates dual 2.5 A internal switches, enabling peak inductor currents up to 2.5 A per channel. This covers 5 V USB, 12 V automotive, 24 V industrial, and 48 V telecom bus voltages within a single IC without external power FETs.
How does the multitopology capability of LT8471IUFD#PBF reduce component count in a dual-output power supply?
Each of the two channels in LT8471IUFD#PBF can be independently configured as a buck, boost, SEPIC, or inverting converter using only external inductors, capacitors, and diodes. A typical dual-output design generating +12 V boost and -5 V inverting from a 5 V rail uses 14 fewer passives compared to two separate single-topology controllers, reducing the BOM by approximately 30% and board area by 25%.
What advantage does clock synchronization provide when LT8471IUFD#PBF powers analog signal chains?
The synchronization input on LT8471IUFD#PBF allows both switching channels to lock their PWM frequency to a system clock ranging from 100 kHz to 1 MHz. By synchronizing to a clock outside the signal bandwidth of an ADC or RF chain, designers can push switching noise harmonics above the measurement band, improving spurious-free dynamic range by 10–15 dB compared to free-running operation.
Which industrial temperature scenarios make the -40°C to 125°C rating of LT8471IUFD#PBF critical?
In outdoor industrial sensors, electric vehicle battery management modules, and motor drive control boards, ambient temperatures regularly swing from -40°C in cold-start conditions to 125°C near power transistors. LT8471IUFD#PBF's industrial temperature rating ensures the PWM controller maintains output voltage regulation within 1% and current limit accuracy within 5% across the full -40°C to 125°C junction temperature range without derating the 2.5 A switch current.
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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.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $12.4800 | $12.48 |
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