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Product Detailed Parameters
- Description：IC REG BCK SEPIC 2.5V 1.5A 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck, SEPIC
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：25V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Current - Output：1.5A
- Frequency - Switching：1.25MHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-MSOP
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Overview
The LT1767EMS8-2.5#PBF is a monolithic synchronous step-down switching regulator manufactured by Analog Devices Inc. It integrates a high-efficiency 1.5A power switch and complete current-mode control circuitry on a single die. The device operates at a fixed switching frequency of 1.25MHz, enabling the use of small external components. It provides a fixed output voltage of 2.5V with a maximum output current capability of 1.5A. The input voltage range spans from 3V to 25V. The component is housed in an 8-pin MSOP package with an exposed pad for thermal dissipation.
Feature Summary
- Integrates a high-efficiency 1.5A synchronous power switch within a compact monolithic design.
- Employs current-mode control architecture to ensure fast transient response and stable loop performance.
- Features adjustable soft-start functionality to limit inrush current during startup sequences.
Applications
- Point-of-load regulation for embedded systems requiring 2.5V rails
- Battery-powered equipment utilizing buck conversion topologies
- Industrial control systems needing isolated or non-isolated DC-DC steps
Procurement Notes
Verify the specific suffix #PBF indicates tube packaging rather than tape and reel when sourcing. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches the exact 2.5V fixed output variant. Check for RoHS compliance status as per the latest datasheet revision. Validate the 8-pin MSOP package type against your PCB footprint requirements.
Selection Notes
Select this component when a fixed 2.5V output is required from an input range of 3V to 25V. The 1.5A current rating suits moderate load applications. The 1.25MHz frequency allows for smaller inductors compared to lower-frequency regulators. Current-mode control is preferred for its ease of compensation and superior line regulation characteristics in dynamic loads.
Part Context
This part belongs to the LT1767 family of monolithic 1.5A, 1.25MHz step-down switching regulators. The family includes variants with different fixed output voltages such as 1.8V, 3.3V, and 5V. All members share the same internal control logic and power switch specifications, differing primarily in the feedback resistor network setting the output voltage.
Replacement Considerations
LT1767EMS8-2.5#TRPBF serves as the tape-and-reel equivalent of this tube-packaged part. Other LT1767 variants like LT1767EMS8-3.3 offer identical electrical performance but provide a 3.3V output instead of 2.5V.
