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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 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
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $15.9900 | $15.99 |
| 10+ | $11.1850 | $111.85 |
| 19+ | $10.4300 | $198.17 |
| 1000+ | $7.8700 | $7870.00 |
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.”