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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3.5A DL 32QFN
- 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)：36V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：34.2V
- Current - Output：3.5A
- Frequency - Switching：110kHz ~ 2.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：32-WFQFN Exposed Pad
- Supplier Device Package：32-QFN (5x5)
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Overview
The LT3692AEUH#PBF is a dual current mode PWM step-down DC/DC converter manufactured by Analog Devices Inc. It features two internal switches rated at 3.8A each, housed in a 32-pin QFN package. The device supports an input voltage range of 15V to 36V and provides four synchronized outputs: 12V, 3.3V, 2.5V, and 1.2V. Output currents are specified as 0.5A for the 12V rail, 2A for the 3.3V rail, and 3A for both the 2.5V and 1.2V rails. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- Dual channel architecture with independent control pins for input voltage, shutdown, feedback, soft-start, UVLO current limit, and comparator functions per channel.
- Supports complex power supply tracking and sequencing requirements through dedicated external synchronization and output ordering capabilities.
- Integrated current mode PWM regulation with internal high-current switches for efficient step-down conversion.
Applications
- Quad output power systems requiring 12V, 3.3V, 2.5V, and 1.2V rails
- Applications necessitating external synchronization and precise output sequencing
- Complex power supply tracking implementations
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the AEUH grade matches your thermal and performance requirements against the standard EUH variant. Ensure the 32-pin QFN footprint aligns with your PCB layout constraints. Cross-reference the manufacturer's latest datasheet for any updates on recommended operating conditions or pin configurations before finalizing procurement.
Selection Notes
Select this component when a dual-buck topology is required to generate multiple distinct voltage rails from a single higher-voltage input source. The independent channel controls make it suitable for designs where strict sequencing or tracking between different voltage domains is mandatory. Consider the 3.8A switch capability relative to your peak load demands and thermal management strategy.
Part Context
This part belongs to the LT3692 family of dual synchronous buck converters. The AEUH designation typically denotes an automotive-grade or enhanced reliability variant compared to standard industrial versions. The family is designed for applications requiring compact solutions with multiple regulated outputs derived from a common bus.
Replacement Considerations
LT3692EUH#PBF is a related variant within the same product family. Verify if the electrical specifications and package dimensions are identical for direct substitution. Check if the AEUH grade offers specific automotive or extended temperature qualifications not present in the standard EUH version.
