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Product Detailed Parameters
- Description：LTC1143 - DUAL HIGH EFFICIENCY S
- Series：-
- Mfr：Linear Technology
- Package：Bulk
- Output Type：Transistor Driver
- Function：Step-Down, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck, Buck-Boost
- Number of Outputs：2
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4V ~ 14V
- Frequency - Switching：Up to 400kHz
- Duty Cycle (Max)：1
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SO
- Grade：-
- Qualification：-
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Overview
The LTC1143CS#PBF is a dual high-efficiency step-down switching regulator controller manufactured by Analog Devices (formerly Linear Technology). It operates with an input voltage range of 3.5V to 16V and provides two adjustable output channels capable of delivering up to 10A each. The device features a fixed switching frequency of 400kHz and a low quiescent current of 160µA. Packaged in a 16-pin SOIC, it supports operation from 0°C to +70°C.
Feature Summary
- Dual independent buck controller architecture for multi-rail power systems
- High efficiency operation optimized for step-down conversion applications
- Low standby power consumption suitable for battery-powered designs
Applications
- Industrial control systems requiring multiple regulated voltage rails
- Telecommunications infrastructure power distribution units
- Embedded computing platforms needing efficient DC-DC regulation
Procurement Notes
Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm RoHS compliance status and lot traceability upon receipt. Check for obsolescence notices as supply may be limited. Ensure storage conditions meet manufacturer specifications to maintain reliability before installation.
Selection Notes
Select this controller when dual isolated or non-isolated buck outputs are required from a single input source. Consider the 400kHz frequency for balancing size and efficiency. Verify that external MOSFETs and inductors support the 10A per channel requirement. Ensure input voltage stays within the 3.5V to 16V operational window.
Part Context
Part of the LTC1143 series of dual synchronous buck controllers. Designed for applications requiring compact, high-density power solutions. Replaces older discrete solutions or single-channel controllers in complex power architectures. Manufactured under Analog Devices' industrial-grade quality standards.
Replacement Considerations
LTC1143LCS#PBF: Adjunct variant with adjusted pinout or feature set; verify compatibility. LTC1143CS#TRPBF: Tape-and-reel version of the same functional device; check packaging requirements.
