LTC3351IUFF#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
LTC3351IUFF#PBF is a hot-swappable supercapacitor charger and backup controller from Analog Devices. It supports 4.5 V to 35 V input and features integrated system monitoring with I2C telemetry. Ideal for industrial power backup and holdup applications requiring seamless energy transfer.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- LTC3351IUFF#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $8.6500(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 LTC3351IUFF#PBF?
- Hot-swappable supercapacitor charger supporting 4.5 V to 35 V input range
- Integrated backup controller with automatic switchover for power holdup
- I2C-accessible system monitor with voltage, current, and temperature telemetry
- Supports up to 4 supercapacitors in series with cell balancing
- 44-pin QFN package enabling compact high-density power module designs
What is LTC3351IUFF#PBF used for?
The LTC3351IUFF#PBF is suited for industrial and telecom equipment requiring uninterrupted power during brief outages, using supercapacitors as a holdup energy source. It excels in server and storage systems where seamless switchover from main rail to backup energy is critical. The device is also used in embedded computing platforms and smart meters that need reliable power-loss ride-through with minimal board area.
What are the specifications of LTC3351IUFF#PBF?
| 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 |
Where can I find the LTC3351IUFF#PBF datasheet?
LTC3351IUFF#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC3351IUFF#PBF?
Compatible alternatives and drop-in replacements for LTC3351IUFF#PBF:
suggested
suggested
Frequently Asked Questions
What input voltage range does the LTC3351IUFF#PBF support for supercapacitor charging?
The LTC3351IUFF#PBF operates from a 4.5 V to 35 V input, with a nominal 12 V rail, making it compatible with a wide range of industrial and telecom power bus standards. This 4.5 V to 35 V input range allows flexible integration across diverse system architectures.
How does LTC3351IUFF#PBF perform real-time power monitoring in a backup system?
It provides I2C-accessible telemetry covering input voltage, supercapacitor stack voltage, charge current, and temperature — all accessible over a standard 2-wire interface. This lets host processors log energy state continuously, helping detect aging capacitors or abnormal conditions across a 24-supercapacitor stack of up to 4 cells in series.
Which industrial applications benefit most from the LTC3351IUFF#PBF backup architecture?
Industrial servers, programmable logic controllers, and telecom base stations benefit from its automatic holdup capability. When input power drops below threshold, the device draws from supercapacitors within microseconds, sustaining rails at regulated voltage for tens of milliseconds to allow graceful system shutdown or data flush in -40°C to 125°C environments.
When would an engineer choose LTC3351IUFF#PBF over a battery-based backup solution?
Supercapacitor-based backup with LTC3351IUFF#PBF is preferred when the application demands more than 500,000 charge-discharge cycles and operates across a -40°C to 125°C temperature range where lithium batteries degrade rapidly. The supercapacitor approach also eliminates chemical hazard compliance overhead and reduces maintenance intervals in embedded or sealed enclosures.
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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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