LTC7801HUFD#PBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
LTC7801HUFD#PBF is a high-voltage, low-IQ synchronous step-down DC/DC controller from Analog Devices, supporting input voltages from 4 V to 140 V with current-mode pulse-width modulation control. It enables efficient power conversion in demanding industrial and automotive environments. Available in a compact QFN package with worldwide distribution.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- LTC7801HUFD#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.0500(MOQ 1)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide input voltage range: 4 V to 140 V (150 V maximum) for high-voltage industrial designs
- Low quiescent current for improved light-load efficiency in battery-powered systems
- Current-mode PWM control with synchronous rectification for high efficiency step-down conversion
- QFN package for compact, thermally efficient PCB designs
- Supports high switching frequencies to minimize external component size
Applications
The LTC7801HUFD#PBF is designed for high-voltage industrial power supplies, automotive 48 V bus converters, and telecom infrastructure equipment requiring a wide 4 V to 140 V input range. Its current-mode PWM architecture enables stable operation across a broad load range, making it suitable for factory automation and off-line power systems. The low quiescent current also benefits always-on monitoring circuits where minimizing standby power consumption is critical.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1696 |
| YTEOL | 10 |
| Additional Feature | SEATED HT-CALCULATED |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 140V |
| Input Voltage-Min | 4V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PQCC-N24 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Max | 60V |
| Output Voltage-Min | 0.8V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC24,.16X.2,20 |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 585kHz |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 the LTC7801HUFD#PBF support for step-down conversion?
The LTC7801HUFD#PBF accepts input voltages from 4 V to 140 V, with an absolute maximum of 150 V. This wide input range makes it ideal for industrial 48 V bus systems, automotive applications, and telecom infrastructure where supply rails can vary widely.
Which high-voltage industrial designs benefit from the LTC7801HUFD#PBF's current-mode PWM architecture?
High-voltage industrial power supplies, 48 V automotive power converters, and factory automation equipment all benefit from LTC7801HUFD#PBF's current-mode pulse-width modulation. The controller maintains stable regulation across load transients while supporting synchronous switching for efficiency in designs requiring outputs well above 4 V up to near-140 V input.
How does LTC7801HUFD#PBF compare to lower-voltage step-down controllers for 48 V bus applications?
Unlike conventional step-down controllers rated for 40 V or 60 V inputs, LTC7801HUFD#PBF handles up to 140 V input directly, eliminating the need for pre-regulation stages in 48 V automotive and industrial systems. Its low quiescent current improves efficiency at light loads, and the QFN package occupies less PCB area than larger SOIC controllers.
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+ | $14.7100 | $14.71 |
| 10+ | $10.2370 | $102.37 |
| 19+ | $9.3400 | $177.46 |
| 1000+ | $7.0500 | $7050.00 |
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.”