LTC3118EUFD#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The LTC3118EUFD#PBF is a 2 A, 2.2 V to 18 V input buck-boost DC-DC converter from Analog Devices, delivering a regulated output of 2 V to 18 V from a single inductor in a 24-pin QFN package. It employs current-mode PWM control for fast transient response and high efficiency across all conversion ratios. Available in stock worldwide with RoHS-compliant lead-free packaging.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- LTC3118EUFD#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.8700(MOQ 1)
- Temp Range
- ?°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC3118EUFD#PBF?
- Wide 2.2 V to 18 V input range with seamless buck-boost operation enabling single-supply designs across battery and regulated-rail systems
- 2 A continuous output current with current-mode PWM control for fast transient response and stable regulation from 2 V to 18 V output
- Compact 24-pin QFN package with exposed pad for efficient thermal dissipation in space-constrained power supply designs
- High efficiency across buck, boost, and pass-through modes minimizing heat generation in portable and industrial DC-DC converter applications
What is LTC3118EUFD#PBF used for?
The LTC3118EUFD#PBF is ideal for battery-powered portable equipment where the supply voltage can swing above or below the desired output, such as Li-Ion-to-5 V regulated rails in handheld instruments and IoT nodes. It is also used in industrial automation and communications hardware where the input rail may vary between 2.2 V and 18 V while a stable output voltage of up to 18 V is required. Its current-mode PWM control makes it well suited for automotive accessory boards and test equipment requiring tight load regulation at 2 A output.
What are the specifications of LTC3118EUFD#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1696 |
| YTEOL | 10 |
| Additional Feature | OUTPUT VOLTAGE RANGE FROM 2 V TO 18 V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 18V |
| Input Voltage-Min | 2.2V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PQCC-N24 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Nom | 5V |
| 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 | 1200kHz |
| Technology | CMOS |
| Temperature Grade | OTHER |
| 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 LTC3118EUFD#PBF datasheet?
LTC3118EUFD#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC3118EUFD#PBF?
Compatible alternatives and drop-in replacements for LTC3118EUFD#PBF:
suggested
suggested
Frequently Asked Questions
What input and output voltage ranges does the LTC3118EUFD#PBF support?
The LTC3118EUFD#PBF accepts an input voltage from 2.2 V to 18 V and can regulate its output anywhere from 2 V to 18 V at up to 2 A continuous current. This wide overlap of input and output ranges enables seamless buck, boost, and unity-gain (pass-through) operation from a single converter IC without mode-switching glitches.
How does the LTC3118 perform when powering a 5 V rail from a 3-cell Li-Ion battery pack?
A 3-cell Li-Ion pack swings roughly from 9 V (discharged) to 12.6 V (fully charged), both above 5 V, so the LTC3118 operates in buck mode throughout with high efficiency typically above 90%. The 2 A output current rating supports loads up to 10 W, covering most embedded computing and sensor hub applications from that rail.
What package does the LTC3118EUFD#PBF use and how does it affect thermal management?
The LTC3118EUFD#PBF is housed in a 24-pin QFN package with an exposed thermal pad on the underside, which transfers heat directly to the PCB copper pour. At 2 A output the exposed pad reduces junction-to-board thermal resistance compared to leaded packages, keeping junction temperatures within safe limits when the PCB includes adequate copper area of at least 1 cm² under the pad.
When should a designer choose LTC3118 over a buck-only regulator for a 5 V output?
A designer should choose the LTC3118 when the input voltage range crosses the output voltage set point—for example, a 2.5 V to 12 V input targeting a 5 V output. A buck-only converter cannot boost from 2.5 V to 5 V, while the LTC3118's current-mode buck-boost topology handles the full 2.2 V to 18 V input range without requiring additional circuitry or sequencing logic.
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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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| 1+ | $15.9900 | $15.99 |
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