ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG BUCK ADJ 5A 24QFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.3V
- Voltage - Input (Max)：40V
- Voltage - Output (Min/Fixed)：1.197V
- Voltage - Output (Max)：38.8V
- Current - Output：5A
- Frequency - Switching：200kHz ~ 2.25MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-QFN (3x5)
- Grade：-
- Qualification：-
Download product information
Overview
The LT3976IUDD is a monolithic buck switching regulator from Analog Devices Inc. It supports an input voltage range of 4.3V to 40V and delivers up to 5A output current. The device features adjustable switching frequency and low quiescent current consumption of 3.3µA during no-load regulation. It utilizes a DFN package for compact integration in space-constrained designs.
Feature Summary
- Adjustable frequency operation allows optimization for efficiency or component size
- Low quiescent current design minimizes power loss during light load conditions
- Wide input voltage range accommodates various supply sources
Applications
- Industrial control systems requiring stable DC-DC conversion
- Portable equipment with battery-powered inputs
- Embedded systems needing high-efficiency step-down regulation
Procurement Notes
Verify the specific suffix (e.g., IUDD) matches your required temperature grade and package type. Confirm the output voltage configuration, as the base part number may support adjustable outputs while specific variants might be fixed. Ensure compatibility with your PCB footprint for the DFN package. Cross-reference the manufacturer's latest datasheet for any pinout or electrical specification updates before finalizing procurement.
Selection Notes
Select this component when a wide input voltage range up to 40V is required alongside high output current capability. The adjustable frequency feature offers flexibility in filter component selection. Consider the thermal performance of the DFN package relative to your system's heat dissipation capabilities. Verify that the 3.3µA quiescent current meets your standby power requirements.
Part Context
The LT3976 belongs to Analog Devices' family of high-efficiency step-down regulators. It is designed for applications demanding robust performance across varying input voltages. The device integrates power switches and control logic into a single chip, simplifying circuit design compared to discrete solutions.
Replacement Considerations
LT3975: Lower current capacity but similar form factor. LT3995: Higher voltage rating but different current specifications. Verify pin compatibility and thermal characteristics when substituting.
