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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 LT3692EUH#PBF is a dual-output synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3 V to 36 V and delivers up to 3.5 A output current per channel. The adjustable output voltage spans from 800 mV to 34.2 V. The device features a switchable switching frequency between 250 kHz and 2.25 MHz. Quiescent current specifications include 630 uA and 4 mA operational modes. It is housed in a QFN-32 package and supports operation temperatures from -40 C to +125 C.
Feature Summary
- Dual independent buck channels for simultaneous multi-rail power generation
- Adjustable switching frequency allows optimization for efficiency or component size
- Integrated synchronous rectification improves conversion efficiency
- Shutdown capability reduces power consumption during inactive states
Applications
- Automotive always-on systems requiring dual voltage rails
- Battery-operated digital devices needing efficient power management
- Distributed DC power systems utilizing high input voltages
- Industrial equipment requiring wide input voltage tolerance
Procurement Notes
Verify the specific suffix and package type against the official datasheet to ensure compatibility with design requirements. Confirm RoHS compliance status through manufacturer documentation before integration. Check for any recent lifecycle updates or obsolescence notices directly from Analog Devices. Ensure that thermal performance meets system constraints given the QFN-32 package limitations. Validate input and output voltage ranges against actual circuit conditions.
Selection Notes
Choose this component when dual isolated outputs are required from a single high-voltage source. The wide input range accommodates various automotive and industrial supply variations. Consider the trade-off between switching frequency selection and external passive component sizes. Evaluate thermal dissipation capabilities within the QFN-32 footprint for the expected load currents. Compare quiescent current specifications against standby power requirements of the target application.
Part Context
This part belongs to the LT3692 series of dual synchronous buck regulators. It complements other Analog Devices power management solutions by providing integrated dual-channel control. The device fits within the broader category of PMICs designed for complex power distribution networks. It shares architectural similarities with single-output variants but adds channel independence.
Replacement Considerations
LT3692EUH#TRPBF
FAQ
What is the maximum input voltage supported by the LT3692EUH#PBF?
The maximum input voltage is 36 V.
Does the LT3692EUH#PBF support adjustable switching frequencies?
Yes, the switching frequency is adjustable between 250 kHz and 2.25 MHz.
