LT1970IFE#TRPBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1970IFE#TRPBF is a 500mA power operational amplifier featuring adjustable precision current limiting. It operates on single or split supplies from 5V to 36V, with a 3.6MHz gain bandwidth product and 1.6V/µs slew rate. The device includes independent source/sink current limit controls with 2% accuracy, open-collector status flags for fault indication, and an enable input for low-power shutdown. Packaged in a 20-lead TSSOP with an exposed thermal pad.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Independent adjustment of sourcing and sinking current limits via external control voltages
• Open collector digital output flags indicating sink current limit, source current limit, and thermal shutdown activation
• Enable logic input that forces the amplifier into a low power, high impedance state when pulled low
• Fail-safe internal current limit and thermal shutdown protection mechanisms

Instrumentation, Op Amps, Buffer Amps Applications

• Automatic Test Equipment
• Laboratory Power Supplies
• Motor Drivers
• Thermoelectric Cooler Drivers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging rather than tube. Confirm the IFE designation corresponds to the specified industrial temperature range of –40°C to 85°C. Ensure the ordering information matches the exact manufacturer part number to avoid functional discrepancies related to package or temperature variants.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring precise, independently programmable current limiting for both sourcing and sinking operations. It is suitable where high output current capability combined with fast response time and fault monitoring flags is necessary. Consider the 20-lead TSSOP package requirements for adequate thermal management during operation.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1970 family of power operational amplifiers designed by Analog Devices. It shares core architecture with other variants like the LT1970CFE but differs in temperature rating and packaging configuration. The series is characterized by its ability to drive significant loads while maintaining precise control over output current limits through external programming.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1970IFE#PBF

Instrumentation, Op Amps, Buffer Amps FAQ

How are the current limit thresholds programmed?

The sourcing and sinking current limits are independently controlled by applying voltage signals to the VCSRC and VCSNK pins, respectively. These voltages set the sense threshold across an external resistor.

What is the function of the ENABLE pin?

The ENABLE pin acts as a digital control input. When pulled low relative to the COMMON pin, it turns off the amplifier output and places the device in a low supply current, high impedance state.