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Product Detailed Parameters
- Description：IC REG BUCK SEPIC ADJ 1.5A 8MSOP
- Series：-
- Mfr：Linear Technology
- Package：Bulk
- Function：Step-Down, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：25V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：22.5V
- Current - Output：1.5A (Switch)
- Frequency - Switching：1.25MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：8-MSOP-EP
- Grade：-
- Qualification：-
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Overview
The LT1767EMS8E-5 is a monolithic step-down switching regulator manufactured by Analog Devices (formerly Linear Technology). It operates with a fixed 1.25MHz switching frequency and integrates a high-efficiency 1.5A power switch. The device accepts an input voltage range of 3V to 25V and provides a fixed 5V output at up to 1.2A. It utilizes current mode control for fast transient response and loop stability. The component is housed in an 8-pin MSOP package with an exposed pad and supports operation from -40°C to +125°C.
Feature Summary
- Integrates a high-efficiency 1.5A synchronous power switch on the die
- Employs current mode control architecture for rapid transient response
- Includes all necessary control circuitry for high-frequency regulation
Applications
- 12V to 3.3V step-down converter circuits
- Dual source supply systems requiring low reverse leakage
- Dual output SEPIC converter topologies
Procurement Notes
Verify the specific suffix against official datasheets, as variants like LT1767EMS8E-5#TRPBF indicate fixed output voltages and tape-and-reel packaging. Confirm RoHS compliance status and ensure the supplier documentation matches the exact part number to avoid confusion with non-PBF or different voltage versions within the LT1767 family.
Selection Notes
Select this component when a compact buck regulator is needed for inputs between 3V and 25V. The fixed 5V output version suits applications requiring stable logic supplies. Ensure the PCB layout accommodates the MSOP-EP package thermal requirements and that the load current does not exceed the integrated switch limits during peak conditions.
Part Context
This part belongs to the LT1767 series of monolithic step-down switching regulators. The series includes various fixed output voltage options such as 1.8V, 2.5V, 3.3V, and 5V. All variants share the same core architecture, switching frequency, and package style, differing primarily in their internal feedback resistor networks for output voltage setting.
Replacement Considerations
LT1767EMS8E-5#TRPBF is the full ordering designation for the reel version. Direct substitutes include other 1.5A, 1.25MHz buck regulators from manufacturers like Semtech, though pinouts and external component values may require verification.
