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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.5A 8DFN
- Series：-
- 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)：3V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.778V
- Voltage - Output (Max)：42V
- Current - Output：1.5A
- Frequency - Switching：200kHz ~ 2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN (2x2)
- Grade：-
- Qualification：-
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Overview
The LT8608EDC#TRMPBF is a synchronous monolithic step-down switching regulator from Analog Devices, housed in an 8-lead DFN package. It operates with an input voltage range of 3V to 42V and delivers a continuous output current of 1.5A. The device features adjustable output voltage and supports switching frequencies between 200kHz and 2.2MHz. Quiescent current in Burst Mode operation is specified at 2.5µA. It functions within a temperature range of -40°C to +125°C.
Feature Summary
- Compact high-efficiency synchronous buck topology with internal compensation for rapid transient response
- Ultra-low quiescent current consumption in Burst Mode operation for improved light-load efficiency
- Adjustable frequency range supporting spread spectrum modulation to minimize electromagnetic interference
Applications
- General-purpose DC-to-DC step-down conversion
- Low EMI power supply designs requiring spread spectrum frequency modulation
- Battery-powered systems utilizing ultra-low static current modes
Procurement Notes
Verify the specific suffix #TRMPBF indicates the tape and reel packaging configuration as documented by the manufacturer. Confirm that the DFN-8 package variant aligns with your PCB footprint requirements. Ensure compliance with RoHS directives and check for any recent Product Change Notifications affecting pinout or electrical characteristics before finalizing procurement.
Selection Notes
Select this component when a wide input voltage range up to 42V is required alongside high continuous current delivery. The absence of SYNC and TR/SS pins distinguishes this DFN package from MSOP variants, limiting external clock synchronization capabilities. Consider thermal dissipation requirements given the small form factor and ensure inductor selection supports the chosen switching frequency.
Part Context
This part belongs to the LT8608 family of synchronous buck regulators designed for space-constrained applications. It shares core electrical specifications with other package variants like the LT8607, though physical dimensions and pin availability differ. The series emphasizes high efficiency across varying load conditions while maintaining stability through internal compensation networks.
Replacement Considerations
LT8608EMSE#TRPBF offers identical electrical performance but includes additional control pins for external synchronization and soft-start programming.
