LTC7801EFE#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The LTC7801EFE#PBF is an Analog Devices high-voltage synchronous step-down DC/DC controller supporting 4 V to 140 V input range with current-mode PWM control and low quiescent current in a 24-lead SO package. It drives external N-channel MOSFETs to deliver regulated output voltages for industrial, automotive, and high-voltage telecom power supply designs.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- LTC7801EFE#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.0400(MOQ 1)
- 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 V to 140 V input range with low quiescent current for high-voltage industrial and automotive step-down converters
- Current-mode PWM control with synchronous rectification drive for improved efficiency and fast transient response
- 24-lead SO package integrating gate drive, protection, and compensation in a compact controller for external MOSFET designs
Applications
The LTC7801EFE#PBF is designed for high-voltage DC-DC step-down conversion in industrial automation, 48 V automotive systems, and telecom infrastructure equipment where input voltages can reach 140 V. Its current-mode control topology simplifies loop compensation and improves line and load regulation in designs converting high bus voltages to 3.3 V, 5 V, or 12 V system rails. The low quiescent current mode supports standby power reduction in battery-backed systems with intermittent load profiles.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1771 |
| YTEOL | 10 |
| 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-PDSO-G24 |
| 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 | TSSOP24,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| 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 | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
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 LTC7801EFE#PBF support, and which high-voltage bus architectures can it directly regulate?
The LTC7801EFE#PBF accepts input voltages from 4 V to 140 V, making it directly applicable to 12 V, 24 V, 48 V, and 100 V bus architectures common in industrial motor drives, telecom rectifiers, and automotive 48 V mild-hybrid systems without requiring a pre-regulator or bus voltage translation stage.
How does current-mode PWM control in the LTC7801EFE#PBF benefit high-current power supply designs compared to voltage-mode control?
Current-mode PWM control in the LTC7801EFE#PBF provides inherent cycle-by-cycle current limiting, automatic input voltage feed-forward, and simpler single-pole loop compensation compared to voltage-mode controllers. At output currents above 10 A with external power MOSFETs, this simplifies achieving stable phase margin across wide input voltage ranges from 4 V to 140 V.
Can the LTC7801EFE#PBF be used in a 48 V automotive system, and what external components does it require for a complete converter?
Yes, the LTC7801EFE#PBF is well suited for 48 V automotive step-down conversion. A complete converter requires 2 external N-channel power MOSFETs rated above 60 V, an inductor sized for the desired switching frequency typically between 100 kHz and 500 kHz, input and output capacitors, and a bootstrap capacitor for the high-side gate driver, all of which are standard discrete components.
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+ | $13.0900 | $13.09 |
| 10+ | $9.0380 | $90.38 |
| 19+ | $8.0100 | $152.19 |
| 1000+ | $6.0400 | $6040.00 |
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.”