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Product Detailed Parameters
- Description：IC REG TRIPLE BUCK/LINEAR 28QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- Topology：Step-Down (Buck) (1), Linear (LDO) (2)
- Number of Outputs：3
- Frequency - Switching：250kHz ~ 2.5MHz
- Voltage/Current - Output 1：0.75V ~ 16V, 2.6A
- Voltage/Current - Output 2：Controller
- Voltage/Current - Output 3：Controller
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：Yes
- Voltage - Supply：4V ~ 36V
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：28-WFQFN Exposed Pad
- Supplier Device Package：28-QFN (4x5)
- Grade：-
- Qualification：-
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Overview
The LT3694IUFD#TRPBF is a monolithic switching regulator featuring one high-current buck converter and two integrated low-dropout (LDO) regulators. It operates from an input voltage range of 4V to 36V. The primary buck output delivers up to 2.6A with an adjustable voltage range of 0.75V to 16V. The device supports programmable switching frequencies between 250kHz and 2.5MHz. It is housed in a 28-lead QFN package rated for operation between -40°C and +125°C.
Feature Summary
- Integrates a 2.6A synchronous buck converter with two auxiliary LDOs for combined power management
- Supports wide input voltage ranges suitable for industrial and automotive applications
- Features programmable switching frequency to optimize efficiency and external component size
Applications
- Industrial equipment requiring multi-rail power distribution
- Automotive infotainment and control modules
- Embedded systems with mixed analog and digital load requirements
Procurement Notes
Verify the suffix #TRPBF indicates tape-and-reel packaging, distinct from the tube-packaged #PBF variant. Confirm the specific temperature grade matches system requirements. Cross-reference the datasheet revision to ensure pin compatibility and electrical characteristics align with design specifications before finalizing procurement orders.
Selection Notes
Select this component when a single IC solution is required to provide both high-current switching regulation and precise linear regulation. The integrated topology reduces board space compared to discrete solutions. Ensure the thermal performance of the 28-QFN package meets the application's heat dissipation needs under maximum load conditions.
Part Context
This part belongs to the LT3694 family of triple-output regulators. It serves as a compact power management solution for systems needing isolated or non-isolated rails derived from a single source. The series is designed to simplify bill-of-materials by combining switching and linear technologies on one die.
Replacement Considerations
LT3694EUFD#PBF and LT3694IUFD-1#PBF are documented parameter equivalents. Verify that the alternative package type and specific output configurations match the original design intent.
