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Product Detailed Parameters
- Description：IC REG BUCK ADJ 16A 24LQFN
- Series：Silent Switcher®2
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：1.5V
- Voltage - Input (Max)：8V
- Voltage - Output (Min/Fixed)：0.6V
- Voltage - Output (Max)：8V
- Current - Output：16A
- Frequency - Switching：300kHz ~ 3.5MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-TFQFN Exposed Pad
- Supplier Device Package：24-LQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The LT8644SIV#TRMPBF is a synchronous step-down Silent Switcher 2 regulator from Analog Devices. It operates with an input voltage range of 2.7V to 8V and delivers up to 16A output current. The device features integrated Schottky diodes and high-side MOSFETs within a compact package. It supports adjustable switching frequencies from 300kHz to 2.2MHz. Quiescent current is typically 1.5µA in standby mode. The component includes comprehensive protection features such as overcurrent, thermal, and short-circuit protection.
Feature Summary
- Silent Switcher 2 architecture minimizes EMI emissions without external filters
- Integrated power stage eliminates need for external Schottky diodes
- High efficiency across wide load and line conditions
- Compact footprint suitable for space-constrained designs
Applications
- Point-of-load regulation for industrial equipment
- Power supplies for automotive infotainment systems
- Voltage conversion for communication infrastructure
- Battery-powered portable devices requiring high current
Procurement Notes
Verify the exact suffix IV#TRMPBF against official Analog Devices documentation to confirm temperature grade and tape-and-reel packaging specifications. Ensure compatibility with your PCB footprint and thermal management strategy. Confirm RoHS compliance status through the manufacturer's latest datasheet or certification documents before finalizing procurement.
Selection Notes
Select this component when high output current near 16A is required within an 8V input limit. Evaluate thermal performance based on ambient temperature and copper area. Compare switching frequency options against filter size constraints. Consider the Silent Switcher 2 benefit if EMI filtering reduction is a priority over discrete solutions.
Part Context
This part belongs to the LT864x family of Silent Switcher regulators designed for high-current applications. It shares architectural similarities with the LT8640S and LT8642S but differs in input voltage range and maximum current capability. The series emphasizes low EMI and high efficiency in small packages.
Replacement Considerations
LT8644SIV#PBF (Tube version)
FAQ
What is the maximum output current of the LT8644S?
The LT8644S can deliver up to 16A of continuous output current.
Does the LT8644S require external Schottky diodes?
No, it integrates internal Schottky diodes as part of its Silent Switcher 2 topology.
