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Product Detailed Parameters
- Description：IC REG CTRLR BUCK-BOOST 38TSSOP
- 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 (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 LT3790HFE#PBF is a synchronous four-switch buck-boost voltage and current regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.7 V to 60 V, supporting output voltages from 1.2 V to 150 V with up to 10 A output current capability. The device features adjustable switching frequencies between 200 kHz and 700 kHz and includes integrated soft-start functionality. Designed for robust performance, it functions across an extended temperature range of -40°C to +150°C and utilizes a 38-pin TSSOP-EP package.
Feature Summary
- Synchronous four-switch topology enables efficient step-up, step-down, and isolated operation modes
- Integrated control loop supports simultaneous regulation of both output voltage and output current
- Programmable switching frequency allows optimization for specific efficiency and size requirements
- Built-in soft-start mechanism limits inrush current during power-up sequences
Applications
- Automotive systems requiring wide input voltage tolerance
- Industrial power supplies needing precise current limiting
- Battery-powered equipment utilizing energy harvesting sources
- Telecommunications infrastructure power management
Procurement Notes
Verify the exact suffix against official Analog Devices documentation to confirm pinout compatibility and thermal pad specifications. Ensure the procurement channel provides valid traceability records. Confirm that the component meets RoHS standards as specified in the manufacturer's datasheet. Cross-reference the ordering part number with the latest revision history to avoid obsolete variants.
Selection Notes
Select this controller when designing systems requiring independent voltage and current regulation within a single stage. The wide input range suits applications with fluctuating source voltages. Consider the 38-pin TSSOP-EP package for thermal dissipation needs. Evaluate the required switching frequency range against electromagnetic interference constraints and passive component sizing requirements.
Part Context
This component belongs to the LT3790 family of synchronous buck-boost controllers. It shares architectural similarities with the LT3791 and LTC3779 but offers distinct input voltage ranges and feature sets. The HFE#PBF designation indicates a specific package variant optimized for surface-mount assembly and thermal performance within the broader power management portfolio.
Replacement Considerations
LT3791HFE-1#PBF serves as a functional substitute with similar buck-boost capabilities. Verify input voltage compatibility and pinout alignment before substitution. The LT3790HFE#PBF remains the primary reference for original design specifications.
