LTC1142HVCG-ADJ#PBF

Overview

The LTC1142HVCG-ADJ#PBF is a dual high-efficiency synchronous step-down switching regulator manufactured by Analog Devices Inc. It integrates two independent buck converters in a 28-lead SSOP package. The device operates with an input voltage range of 3.5 V to 20 V and provides adjustable output voltages. Each channel delivers up to 700 mA of output current. Key electrical parameters include a 250 kHz switching frequency, 160 µA quiescent current, and operation within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates two independent high-efficiency synchronous buck regulators on a single chip
• Features automatic Burst Mode operation for optimized light-load efficiency
• Includes internal power MOSFETs and PWM control circuitry

Applications

• Triple output notebook power supplies (3.3V, 5V, 12V)
• Battery-powered portable equipment
• General-purpose DC/DC conversion systems

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix #PBF indicates lead-free RoHS compliance. Check current availability status as supply may be limited or subject to factory special orders. Ensure the ordering part number matches the exact package and temperature grade requirements for your design.

Selection Notes

Select this component when designing systems requiring two isolated or non-isolated low-voltage rails from a higher input source. It is suitable for applications prioritizing space savings due to the integrated dual topology. Consider the 250 kHz switching frequency for passive component size trade-offs. Verify that the 700 mA per channel limit meets the peak load demands of both outputs simultaneously.

Part Context

This part belongs to the LTC1142 series of dual synchronous step-down regulators. It is designed to replace discrete solutions using separate controllers and external MOSFETs. The HV variant supports higher input voltages compared to standard versions. It serves as a compact power management solution for mobile and industrial electronics requiring multiple regulated outputs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.