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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 14SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：3.5V ~ 20V
- Frequency - Switching：Up to 250kHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SO
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Overview
The LTC1148HVCS-3.3#PBF is a high-efficiency synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range up to 60V and provides a fixed 3.3V output. The device integrates a power MOSFET and supports external current sensing for precise regulation. Key electrical parameters include a switching frequency of 400kHz, a quiescent current of 250µA, and a shutdown current of less than 1µA. It is housed in a compact 14-lead SOIC package.
Feature Summary
- Integrated synchronous rectification for improved efficiency
- Wide input voltage capability supporting high-voltage sources
- Fixed 3.3V output voltage option
- Compact surface-mount packaging
Applications
- Industrial control systems
- High-voltage battery-powered equipment
- Point-of-load regulation modules
- Telecommunications infrastructure
Procurement Notes
Verify the specific suffix and tape/reel quantity against the manufacturer's official datasheet before ordering. Confirm that the 14-SOIC package dimensions match your PCB footprint requirements. Ensure compatibility with the required thermal management solution for the intended operating environment.
Selection Notes
Select this component when a wide input voltage range exceeding standard 36V limits is required. The integrated synchronous design reduces external component count compared to non-synchronous alternatives. Verify that the 400kHz switching frequency aligns with EMI constraints and inductor selection guidelines provided in the technical documentation.
Part Context
This part belongs to the LTC1148 family of high-voltage synchronous buck regulators. It shares architectural similarities with other members like the LTC1148HVCS-5 but differs in fixed output voltage configuration. The series is designed for applications requiring robust performance under varying load conditions and high input potentials.
Replacement Considerations
Direct substitutes may include other Analog Devices high-voltage synchronous buck regulators such as the LTC1148HVCS-5#PBF for different voltage outputs. Cross-brand replacements require careful verification of pinout compatibility, thermal characteristics, and control loop stability.
