LT8740AY-2.25#PBF

Power Management - Specialized Overview

The LT8740AY-2.25#PBF is a Programmable Device Power Supply (DPS) from Analog Devices Inc., featuring high efficiency and integration. It contains two switching power supplies, each capable of delivering up to ±2A at output voltages up to 30V. The device integrates current sense resistors for precise measurement within a ±5μA to ±2A range. A linear drive stage provides an output with ripple as low as ±25mA. Internal ADCs digitize voltage and current for digital PID control via SPI or 2-wire serial interface at speeds up to 40MHz. It includes open-drain alerts for faults like overcurrent or overheating.

Power Management - Specialized Feature Summary

• Integrates two high-efficiency switching power supplies with Silent Switcher architecture
• Features integrated current sense resistors for precise output current measurement
• Includes internal ADCs and DACs for digital PID control of voltage and current
• Provides a linear drive stage for ultra-low ripple output capability

Power Management - Specialized Applications

• Automated Test Equipment (ATE)
• Programmable Device Power Supplies

Power Management - Specialized Procurement Notes

Verify the specific suffix 'AY-2.25' against official Analog Devices documentation to confirm temperature grade and pinout compatibility. Ensure the ordering part number matches the exact package and thermal specifications required for your design. Cross-reference with the latest datasheet revision to avoid discrepancies in electrical characteristics or pin assignments.

Power Management - Specialized Selection Notes

Select this component when dual-channel programmable power delivery with integrated sensing is required. The built-in current sense resistors simplify board layout by eliminating external shunt components. Consider the BGA package constraints and thermal management requirements associated with the 166-ball configuration during PCB design.

Power Management - Specialized Part Context

This part belongs to the LT8740 family of Programmable Device Power Supplies. It is designed specifically for applications requiring precise, digitally controlled power rails. The family emphasizes integration by combining switching regulators, linear drivers, and analog-to-digital conversion in a single package.

Power Management - Specialized FAQ

What is the maximum output current per channel?

Each of the two switching power supply channels can deliver up to ±2A.

How is the output voltage and current controlled?

Control is achieved through a digital PID loop using internal ADCs and DACs, managed via a serial interface such as SPI or a 2-wire interface.