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Product Detailed Parameters
- Description：IC REG BUCK 5V 3A 16TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Fixed
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：25V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Current - Output：3A
- Frequency - Switching：1.25MHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Supplier Device Package：16-TSSOP-EP
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Overview
The LT1765EFE-5#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc., housed in a 16-TSSOP package with an exposed pad. It provides a fixed 5 V output at up to 2.4 A load current, operating from a 3 V to 25 V input range. The device integrates a 1.25 MHz fixed-frequency PWM controller and features low quiescent current of 15 uA during shutdown. It supports operation over an extended temperature range of -40°C to +125°C.
Feature Summary
- Fixed 1.25 MHz switching frequency enables the use of compact external components for space-constrained designs.
- Integrated high-side and low-side power switches deliver efficient step-down conversion without requiring external rectifiers.
- Shutdown mode significantly reduces supply current, supporting battery-powered applications requiring extended standby life.
Applications
- Point-of-load regulation for embedded systems
- Battery-powered portable equipment
- Industrial control system power supplies
Procurement Notes
Verify the specific suffix #PBF confirms lead-free compliance and RoHS adherence per manufacturer declarations. Confirm the 16-TSSOP-EP package variant matches your PCB footprint requirements. Cross-reference the exact part number against official distributor catalogs to ensure availability status and authenticity before finalizing procurement orders.
Selection Notes
Select this component when a fixed 5 V output is required within a 3 V to 25 V input window. The 1.25 MHz frequency allows smaller inductors compared to lower-frequency alternatives. Ensure thermal management accounts for the TSSOP-EP package limitations under high load conditions. Verify that the fixed output voltage meets system rail requirements without needing external feedback adjustments.
Part Context
This part belongs to the LT1765 family of high-efficiency synchronous buck regulators. It shares architectural similarities with adjustable variants like the LT1765EFE#PBF but offers a factory-set 5 V output. The series targets applications demanding moderate current levels with minimal external component count and reliable performance across industrial temperature ranges.
Replacement Considerations
LT1765EFE-3.3#PBF provides a 3.3 V output; LT1765EFE#PBF offers adjustable output. Verify pin compatibility and thermal characteristics when substituting within the same package family.
