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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A DL 38TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：2
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：60V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：57V
- Current - Output：3A
- Frequency - Switching：110kHz ~ 2.5MHz
- Synchronous Rectifier：No
- 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 LT3992HFE#PBF is a dual-output synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3V to 60V and provides two adjustable positive outputs, each capable of delivering up to 3A. The device utilizes a fixed-frequency current mode architecture with a switchable frequency range from 110kHz to 2.5MHz. It features a minimum output voltage of 0.8V and supports operation in temperatures from -40°C to +150°C TJ. The component is housed in a 38-lead TSSOP package with an exposed thermal pad for efficient heat dissipation.
Feature Summary
- Dual independent synchronous buck channels providing isolated control for each output
- Wide 3V to 60V input voltage range suitable for industrial bus voltages
- Switchable switching frequency from 110kHz to 2.5MHz for optimization of efficiency or size
- Integrated thermal regulation and cycle-by-cycle current limiting protection
Applications
- Industrial distributed power architectures requiring multiple regulated rails
- Point-of-load conversion for microprocessors and FPGAs
- Telecommunications equipment power distribution
- Automotive infotainment and control module power supplies
Procurement Notes
Verify the specific suffix #PBF indicates lead-free RoHS compliance before ordering. Confirm the 38-TSSOP-EP package dimensions match your PCB footprint design. Check current availability status as supply may be limited. Ensure the operating temperature range meets your system requirements. Validate that the 3A per channel current rating satisfies your load demands.
Selection Notes
Select this component when dual isolated outputs are required from a single high-voltage rail. The wide input range accommodates various industrial standards. Consider the switchable frequency feature to balance EMI performance against passive component size. The exposed pad package requires adequate thermal management on the PCB. Verify that the 0.8V minimum output voltage aligns with your target logic levels.
Part Context
This part belongs to the LT3992 family of dual synchronous buck regulators designed for high-efficiency power conversion. It shares the same core topology and pinout compatibility within its series but differs in packaging and environmental ratings compared to other variants. The device integrates high-side and low-side drivers for external N-channel MOSFETs, optimizing board space and efficiency in compact designs.
Replacement Considerations
LT3992EFE#PBF: Identical electrical specifications but packaged in 38-Lead SSOP instead of TSSOP. Requires re-evaluation of PCB footprint and thermal interface.
