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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.4A DL 16TSSOP
- 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)：3.7V
- Voltage - Input (Max)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：35.28V
- Current - Output：1.4A
- Frequency - Switching：920kHz ~ 1.06MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：16-TSSOP-EP
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Overview
The LT3508HFE#PBF is a dual synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It integrates two independent high-efficiency buck converters within a single package, designed to provide regulated output voltages from a wide input voltage range of 3.7V to 36V. Each channel delivers up to 1.4A of continuous output current with an adjustable output voltage starting from 0.8V. The device operates at a fixed switching frequency of approximately 1MHz, enabling the use of small external inductors and capacitors. It features a 16-lead TSSOP package with an exposed thermal pad for efficient heat dissipation.
Feature Summary
- Integrates two independent synchronous buck converters in a compact package
- Supports wide input voltage range suitable for various power sources
- Provides adjustable output voltage with high efficiency under load
- Includes thermal performance optimization via exposed pad design
Applications
- Portable instrumentation requiring multiple voltage rails
- Industrial control systems with distributed power architectures
- Embedded computing platforms needing isolated or non-isolated low-voltage regulation
- Telecommunications equipment utilizing standard bus voltages
Procurement Notes
Verify the exact suffix and tape/reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the procurement channel provides genuine components with traceable origin. Check for any specific handling requirements related to moisture sensitivity levels during storage and assembly processes.
Selection Notes
Select this component when a dual-channel solution is required to save board space compared to using two separate single-channel regulators. Ensure the thermal design accounts for the combined power dissipation of both channels operating simultaneously. Verify that the required output currents do not exceed the 1.4A limit per channel under all operating conditions.
Part Context
This part belongs to the LT3508 family of dual synchronous step-down converters. It shares core architecture with variants like the LT3508IFE#TRPBF but differs in packaging and reel configuration. The HFE suffix typically denotes a specific tube packaging option compared to the TRPBF tape-and-reel variant.
Replacement Considerations
LT3508IFE#TRPBF offers identical electrical performance but in a tape-and-reel format. Other dual buck converters from different manufacturers may require significant circuit redesign due to pinout or control interface differences.
