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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A 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)：3.4V
- Voltage - Input (Max)：65V
- Voltage - Output (Min/Fixed)：0.97V
- Voltage - Output (Max)：64.75V
- Current - Output：2A
- Frequency - Switching：200kHz ~ 2.2MHz
- Synchronous Rectifier：Yes
- 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：-
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Overview
The LT8620EUDD#PBF is a synchronous monolithic step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.4 V to 65 V and delivers up to 2 A of continuous output current. The device features adjustable output voltages from 970 mV to 64.75 V and maintains a typical quiescent current of 2.5 µA in Burst Mode operation. It supports switching frequencies between 200 kHz and 2.2 MHz and functions within a temperature range of -40°C to +125°C. The component is housed in a thermally enhanced 24-lead, 3 mm x 4 mm QFN package.
Feature Summary
- Integrates high-efficiency top and bottom power switches with all necessary control circuitry on a single chip
- Provides ultra-low quiescent current via Burst Mode operation for extended battery life in always-on systems
- Features fast 30 ns minimum on-time to support high step-down ratios at elevated switching frequencies
Applications
- Automotive single-battery and dual-battery systems
- Industrial applications requiring wide input voltage ranges
- GSM power supplies
Procurement Notes
Verify the specific suffix EUDD against official Analog Devices documentation to confirm the exact pinout, thermal pad configuration, and lead finish specifications. Ensure the selected package variant matches the PCB footprint requirements for the 24-lead QFN form factor. Cross-reference the datasheet revision history to validate compatibility with existing design constraints.
Selection Notes
Select this component when designing systems that require high efficiency across a broad input voltage spectrum up to 65 V. It is suitable for applications demanding low standby power consumption through Burst Mode operation. Consider the 24-lead QFN package for designs prioritizing thermal performance and compact board space utilization compared to smaller packages.
Part Context
This part belongs to the LT8620 series of synchronous buck regulators designed for automotive and industrial environments. The series is characterized by its ability to handle high input voltages while maintaining high efficiency and low noise. The EUDD suffix denotes a specific package and temperature grade variation within the broader LT8620 product family offered by Analog Devices.
Replacement Considerations
LT8620EMSE#PBF
FAQ
What is the minimum operating input voltage for the LT8620EUDD#PBF?
The minimum operating input voltage is 3.4 V.
Does the LT8620EUDD#PBF support synchronization to an external clock?
Yes, the switching frequency can be synchronized to an external clock within the 200 kHz to 2.2 MHz range.
