LTC3351EUFF#TRPBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
Analog Devices LTC3351EUFF#TRPBF is a voltage-mode switching controller IC operating from 4.5 V to 35 V (nominal 12 V), designed for supercapacitor backup and charger management, housed in a 44-pin QFN EP package with tape-and-reel delivery.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- LTC3351EUFF#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.8400(MOQ 19)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide 4.5 V to 35 V input range (nominal 12 V) voltage-mode switching controller for supercapacitor charger and holdup management
- 44-pin QFN EP (R-PQCC-N44) package with exposed pad for superior thermal performance in high-current charger designs
- Integrated supercapacitor balancing, monitoring, and backup switchover control in a single IC reducing external component count
Applications
LTC3351EUFF#TRPBF is used in enterprise servers, storage systems, and industrial power supplies requiring holdup power from supercapacitor banks during brief mains interruptions. It manages charging of supercapacitor stacks from a 4.5 V to 35 V rail while providing cell balancing and charge monitoring through an integrated controller. Its voltage-mode control and wide input range make it suitable for 12 V bus architectures common in data center and telecom power designs.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1500 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | VOLTAGE-MODE |
| Input Voltage-Max | 35V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PQCC-N44 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC44,.16X.28,16 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 510kHz |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.4mm |
| 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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does LTC3351EUFF#TRPBF support, and what is the nominal operating voltage?
LTC3351EUFF#TRPBF operates across an input voltage range of 4.5 V to 35 V, with a nominal operating voltage of 12 V. This wide range makes it compatible with standard 12 V bus architectures in servers and industrial equipment, while also tolerating input voltage transients up to 35 V without requiring external clamping circuitry.
Which control topology does LTC3351EUFF#TRPBF use, and why does it suit supercapacitor backup applications?
LTC3351EUFF#TRPBF uses voltage-mode control, which provides stable regulation across the wide supercapacitor voltage range as cells charge from 0 V to their rated voltage. Voltage-mode control simplifies compensation design and is well matched to the capacitive load characteristic of supercapacitor stacks, ensuring smooth charging without current runaway in holdup power systems rated for 12 V bus designs.
How does the 44-pin QFN EP package of LTC3351EUFF#TRPBF help manage heat in high-power charger designs?
The 44-pin QFN EP package (JESD-30 code R-PQCC-N44) includes an exposed thermal pad on the underside that directly contacts the PCB copper pour, enabling conduction of heat away from the die at typical power levels encountered in 12 V supercapacitor charger designs. This reduces junction temperature rise compared to leaded packages without a dedicated thermal pad, allowing higher sustained output current without external heatsinking.
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 |
|---|---|---|
| 19+ | $10.3900 | $197.41 |
| 100+ | $8.5250 | $852.50 |
| 1000+ | $7.8400 | $7840.00 |
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.”