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Product Detailed Parameters
- Description：IC REG BCK SEPIC 3.3V 1.5A 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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)：3.3V
- 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 LT1767EMS8-3.3#TRPBF is a monolithic step-down switching regulator manufactured by Analog Devices Inc., operating at a fixed frequency of 1.25MHz. It provides a fixed output voltage of 3.3V with a maximum output current capability of 1.5A. The device accepts an input voltage range from 3V to 25V and supports both Buck and SEPIC topologies. Packaged in an 8-pin MSOP with exposed pad, it features current mode control for stability. The component operates within a temperature range of -40°C to +125°C junction temperature.
Feature Summary
- Integrates a high-efficiency 1.5A power switch and complete current-mode control circuitry on a single die.
- Supports flexible topology configurations including standard buck and SEPIC step-down conversions.
- Provides fast transient response and excellent loop stability through internal current-mode control architecture.
Applications
- Dual source supply systems requiring low reverse leakage characteristics
- 12V to 3.3V step-down converter implementations
- Dual output SEPIC converter designs
Procurement Notes
Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the manufacturer part number matches Analog Devices Inc. specifications exactly. Ensure compatibility with surface mount assembly processes for the 8-MSOP package. Check RoHS compliance status against current regulatory requirements before finalizing procurement orders.
Selection Notes
Select this component when a fixed 3.3V output is required from an input range of 3V to 25V. Choose this part over adjustable regulators if precise voltage accuracy without external resistors is needed. Consider the 1.5A current limit for load requirements. Evaluate the 1.25MHz switching frequency for trade-offs between component size and electromagnetic interference.
Part Context
This part belongs to the LT1767 series of monolithic step-down switching regulators. The series includes variants with different fixed output voltages such as 1.8V, 2.5V, and 5V. All members share the same core architecture featuring a 1.5A switch and 1.25MHz operation. The EMS8 designation refers to the specific 8-pin MSOP package configuration used across the family.
Replacement Considerations
LT1767EMS8E-3.3#PBF serves as a tube-packaged alternative offering identical electrical performance. Other voltage variants like LT1767EMS8E-2.5#TRPBF or LT1767EMS8E-5#TRPBF provide different fixed outputs within the same package. Verify pinout compatibility when substituting with other LDO or switching regulator families.
