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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) Exposed Pad
- Supplier Device Package：8-MSOP-EP
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Overview
The LT1767EMS8E-2.5#PBF is a monolithic synchronous buck switching regulator manufactured by Analog Devices Inc., housed in an 8-pin MSOP EP package. 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, providing fast transient response and excellent loop stability. It accepts an input voltage range from 3V to 25V and delivers a fixed output voltage of 2.5V with a maximum output current of 1.5A. Key electrical specifications include a quiescent current of 6µA, a shutdown feature for low-power applications, and an operating temperature range spanning from -40°C to +125°C.
Feature Summary
- Integrates a high-efficiency 1.5A synchronous power switch within a compact monolithic design.
- Employs current-mode control architecture to ensure rapid transient response and robust loop stability.
- Features a low 6µA reverse leakage current and dedicated shutdown pin for enhanced power management efficiency.
Applications
- Dual source power supply circuits requiring low reverse leakage characteristics
- Buck converter designs with adjustable soft-start capabilities
- Dual output SEPIC converter topologies
Procurement Notes
Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm that the E-2.5 designation corresponds to the fixed 2.5V output variant rather than adjustable versions. Cross-reference the manufacturer part number LT1767EMS8E-2.5#PBF with distributor codes such as 505-LT1767EMS8E-2.5#PBF-ND to ensure accurate component identification during procurement.
Selection Notes
Select this component for applications requiring a fixed 2.5V output from a 3V to 25V input range. The 1.25MHz switching frequency allows for smaller passive components compared to lower-frequency regulators. Ensure the thermal requirements of the 8-pin MSOP EP package are met for the expected load current. Consider the 1.5A peak switch capability against the continuous load demands of the target application.
Part Context
This part belongs to the LT1767 family of synchronous step-down converters. Variants within the series include different fixed output voltages such as 1.2V, 1.8V, 3.3V, and 5V, as well as adjustable versions. The EMS8E package denotes the 8-lead Mini-SOEP surface-mount option with an exposed pad for improved thermal dissipation, distinguishing it from standard TSSOP packages.
Replacement Considerations
Compatible substitutes within the same product line include LT1767EMS8E-1.2#PBF, LT1767EMS8E-1.8#PBF, LT1767EMS8E-3.3#PBF, and LT1767EMS8E-5#PBF, which share identical pinouts and control architectures but differ in fixed output voltage settings.
