LTC1142LCG-ADJ#PBF

Overview

The LTC1142LCG-ADJ#PBF is a dual synchronous buck switching regulator IC from Analog Devices. It integrates two high-efficiency step-down converters in a single package, featuring an adjustable output voltage range and a maximum output current of 700 mA per channel. The device operates with an input supply voltage between 3.5 V and 20 V, utilizing a fixed switching frequency of 250 kHz. It employs a compact SSOP-28 surface-mount package and includes internal compensation for stable operation across various load conditions.

Feature Summary

• Dual-channel architecture providing independent synchronous buck regulation within a single integrated circuit
• High-efficiency synchronous rectification design to minimize power loss and thermal generation
• Integrated error amplifiers and compensation networks simplify external component requirements
• Adjustable output voltage capability allows customization for specific system rail requirements

Applications

• Portable battery-powered equipment requiring multiple regulated voltage rails
• Industrial control systems needing efficient DC-DC conversion
• Communication infrastructure powering logic and interface circuits
• Motor control cabinets requiring stable low-noise power supplies

Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm pinout and electrical specifications. Ensure the SSOP-28 package matches your PCB footprint constraints. Confirm RoHS compliance status through the manufacturer's latest datasheet revision notes before finalizing procurement orders.

Selection Notes

Select this component when space-constrained designs require two isolated or non-isolated buck regulators. Evaluate the 250 kHz switching frequency against EMI sensitivity requirements. Compare the 700 mA output capability against peak load demands to ensure adequate thermal headroom without excessive heatsinking.

Part Context

This part belongs to the LTC1142 family of dual synchronous buck regulators. It shares functional similarities with other ADI power management ICs but is distinct due to its dual-channel integration. The family targets applications where board area reduction and efficiency are critical priorities over single-channel simplicity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices application notes for potential cross-references based on specific voltage and current requirements.