LTC3869IUFD#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
Analog Devices LTC3869IUFD#PBF is a dual 2-phase synchronous buck controller with current-mode PWM control, supporting input voltages from 4 V to 38 V and adjustable output from 0.6 V to 12.5 V, packaged in a QFN for high-density power designs. It can also operate as an LDO regulator for design flexibility. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- LTC3869IUFD#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.9800(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 LTC3869IUFD#PBF?
- Dual 2-phase current-mode PWM synchronous buck controller with 4 V to 38 V input range handles wide-input telecom and server power rails
- Adjustable output voltage from 0.6 V to 12.5 V with LDO fallback mode provides design flexibility for multi-rail power architectures
- QFN package enables compact high-density power module layouts for space-constrained industrial and networking equipment
What is LTC3869IUFD#PBF used for?
The LTC3869IUFD#PBF is suited for dual-output power supplies in telecommunications infrastructure, industrial computers, and high-performance networking equipment requiring a 4 V to 38 V input range with precise output voltage control from 0.6 V to 12.5 V. Its 2-phase synchronous architecture reduces input ripple current and output capacitor requirements compared to single-phase designs. The LDO fallback mode extends its utility in designs that must maintain regulation during low-load or startup conditions.
What are the specifications of LTC3869IUFD#PBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1712 |
| YTEOL | 10 |
| Additional Feature | ALSO OPERATES AS LDO REGULATOR, OPERATES IN ADJUSTABLE MODE FROM 0.6 TO 12.5V |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 38V |
| Input Voltage-Min | 4V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PQCC-N28 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 0.1A |
| Output Voltage-Max | 12.5V |
| Output Voltage-Min | 0.6V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | PHASE-SHIFT |
| Switching Frequency-Max | 850kHz |
| Technology | CMOS |
| 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 LTC3869IUFD#PBF datasheet?
LTC3869IUFD#PBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC3869IUFD#PBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input and output voltage ranges does the LTC3869IUFD#PBF support?
The LTC3869IUFD#PBF accepts input voltages from 4 V to 38 V with a nominal 15 V operating point, and produces adjustable output voltages from 0.6 V to 12.5 V. This wide input range makes it suitable for 12 V, 24 V, and 28 V bus architectures commonly used in telecom and industrial power designs.
How does the 2-phase synchronous topology of LTC3869IUFD#PBF improve power supply efficiency?
The LTC3869IUFD#PBF uses a dual 2-phase synchronous buck topology where each phase operates 180 degrees out of phase, canceling input ripple current and halving the effective output ripple frequency. This allows smaller output capacitors and inductors compared to single-phase designs, reducing both board space and cost in server and networking power modules.
Can LTC3869IUFD#PBF operate as an LDO regulator and in what scenarios is that useful?
Yes, the LTC3869IUFD#PBF can also operate as an LDO regulator, as noted in its feature set. This capability is useful during system startup or in low-dropout conditions where the input-to-output differential is less than 1 V, allowing the controller to maintain a regulated 0.6 V to 12.5 V output without switching losses.
What package does LTC3869IUFD#PBF use and how does it suit high-density power module designs?
The LTC3869IUFD#PBF is housed in a QFN (Quad Flat No-Lead) package, which provides a compact footprint and exposed thermal pad for improved heat dissipation. The no-lead design minimizes parasitic inductance at high switching frequencies, making it suitable for dense power conversion layouts in networking and industrial equipment PCBs with 38 V bus voltages.
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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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