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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3.5A DL 32QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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 LT3692AIUH#TRPBF is a dual current mode PWM step-down DC/DC converter featuring two internal 3.8A switches. It supports an input voltage range of 5.5V to 18V and provides adjustable output voltages from 0.8V to 34.2V with up to 3.5A output current per channel. The device operates at a switch frequency of 2.5MHz, utilizes a QFN-32 package, and functions within a temperature range of -40°C to +125°C.
Feature Summary
- Dual channels with independent input voltage, shutdown, feedback, soft-start, UVLO current limit, and comparator pins for complex power supply tracking and sequencing.
- Internal 3.8A switches enable high-current delivery in a compact surface-mount footprint.
- Current mode PWM architecture ensures stable operation across varying load conditions.
Applications
- Quad output multi-frequency synchronized two-stage converters
- External synchronization with output sequencing and tracking
- Single output configurations with UVLO/OVLO and power good status
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the 'A' grade designation matches required performance specifications against standard variants. Ensure compatibility with the 32-WFQFN bare pad thermal requirements during assembly. Cross-reference the manufacturer datasheet for any recent design changes or pinout updates before finalizing procurement.
Selection Notes
Select this component for designs requiring precise dual-channel power management with independent control features. The wide input voltage range suits applications with variable source conditions. Evaluate thermal dissipation needs given the 3.8A switch capability and QFN-32 package constraints. Ensure external components support the 2.5MHz switching frequency for optimal efficiency and size reduction.
Part Context
This part belongs to the LT3692 series of monolithic dual tracking switching regulators by Analog Devices. It is designed for applications demanding flexible power rail generation with synchronized operation capabilities. The series supports various output configurations through independent channel controls, making it suitable for complex system-on-chip power architectures.
Replacement Considerations
LT3692EUH#PBF serves as a related variant within the same family. Verify if the specific electrical characteristics and package type of the substitute meet the original design requirements without modification.
