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Product Detailed Parameters
- Description：IC REG CTRLR BUCK-BOOST 38TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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 (TJ)
- Mounting Type：Surface Mount
- Package / Case：38-TFSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：38-TSSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT3791HFE-1#TRPBF is a synchronous buck-boost DC/DC controller designed for high-voltage applications. It supports an input voltage range of 4.7 V to 60 V and delivers up to 10 A output current with a maximum output voltage of 60 V. The device operates at a switch frequency between 200 kHz and 700 kHz, featuring a quiescent current of 3 mA. It utilizes a 38-pin TSSOP-EP package and functions within a temperature range of -40°C to +150°C.
Feature Summary
- Synchronous four-switch buck-boost topology supporting wide input and output voltage ranges
- Integrated current mode control with programmable switching frequency
- Extended thermal performance rated for junction temperatures up to 150°C
Applications
- Industrial power supplies requiring isolated or non-isolated conversion
- Battery-powered systems with varying cell counts
- Automotive electronics operating under wide voltage fluctuations
- LED drivers for high-power lighting applications
Procurement Notes
Verify the specific suffix '-1' indicates the correct pinout configuration for your design, as it differs from standard variants. Confirm RoHS compliance status through official manufacturer documentation prior to ordering. Ensure the TSSOP-EP package thermal pad is properly connected to ground for optimal heat dissipation during PCB layout.
Selection Notes
Select this component when designing systems requiring operation across both buck and boost modes with inputs exceeding standard low-voltage controllers. Consider the 60 V absolute maximum rating for input transients. Evaluate thermal requirements carefully due to the high current capability and ensure adequate copper area for the exposed pad.
Part Context
This part belongs to the LT3791 family of synchronous buck-boost controllers from Analog Devices. It is distinct from the LT3791EFE variant by its specific pinout configuration indicated by the '-1' suffix. The '#TRPBF' designation confirms it is supplied in tape and reel packaging for surface-mount assembly.
Replacement Considerations
LT3791EFE-1#TRPBF shares the same electrical specifications but may differ in package lead configuration; verify pin compatibility before substitution. Standard LT3791EFE variants are not electrically equivalent due to different pinouts.
