ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REGULATOR
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：2
- Output Phases：2
- Voltage - Supply (Vcc/Vdd)：4.7V ~ 60V
- Frequency - Switching：200kHz ~ 700kHz
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：Yes
- Serial Interfaces：-
- Control Features：Enable, Frequency Control, Soft Start
- Operating Temperature：-40°C ~ 150°C
- Mounting Type：Surface Mount
- Package / Case：38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：38-TSSOP-EP
- Grade：-
- Qualification：-
Download product information
Overview
The LT3791HFE-1 is a synchronous four-switch buck-boost controller from Analog Devices. It operates with an input voltage range of 4.7 V to 60 V and supports up to 10 A output current. The device regulates output voltage or current using a switching frequency adjustable between 200 kHz and 700 kHz. It features a quiescent current of 3 mA and functions within a temperature range of -40°C to +150°C. Packaged in a 38-pin TSSOP-EP, it provides robust power management for wide input variations.
Feature Summary
- Synchronous four-switch topology enables efficient step-up and step-down regulation
- Supports simultaneous control of output voltage and output current
- Wide operating input voltage range accommodates diverse power sources
Applications
- Industrial power supplies requiring wide input ranges
- Battery-powered systems with varying cell counts
- Automotive electronics applications
Procurement Notes
Verify the specific suffix (PBF vs TRPBF) against your packaging requirements. Confirm that the 38-TSSOP-EP package matches your PCB footprint. Ensure the thermal pad connection is designed correctly for heat dissipation at high load currents. Check the latest datasheet for any pinout revisions or environmental compliance updates before finalizing the design.
Selection Notes
Select this component when input voltages vary significantly above or below the desired output level. It is suitable for designs needing precise current limiting alongside voltage regulation. Consider the 38-pin package size and thermal performance relative to your board space constraints. Evaluate the 200–700 kHz frequency range against EMI requirements and inductor size preferences.
Part Context
This part belongs to the LT3791 family of synchronous buck-boost controllers. It shares architectural similarities with other Linear Technology power management ICs but is distinct in its four-switch configuration. The HFE-1 designation indicates specific electrical characteristics and package type within the broader product line.
Replacement Considerations
LT3791EFE#PBF is a related variant within the same family. Verify if the LED driver specific features of the EFE variant are required instead of the general regulator features of the HFE variant.
