LT1970CFE#TRPBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1970CFE#TRPBF is a ±500mA power operational amplifier featuring precise externally controlled current limiting. It operates on single or split supplies ranging from 5V to 36V total voltage. The device provides independent adjustment of sourcing and sinking current limits with 2% accuracy, utilizing separate control voltages at VCSRC and VCSNK pins. It includes open-collector status flags for source limit, sink limit, and thermal shutdown, alongside an enable logic input for low-power standby. The amplifier offers a 3.6MHz gain bandwidth product, 1.6V/µs slew rate, and 2MHz current limit response bandwidth.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Independent precision current limit control for sourcing and sinking operations
• Integrated fault protection including thermal shutdown and fail-safe current limiting
• Open-collector digital output flags indicating active current limits or thermal events
• Low-power shutdown mode via TTL-compatible enable logic input

Instrumentation, Op Amps, Buffer Amps Applications

• Automatic test equipment requiring programmable current sources
• Laboratory power supplies with adjustable output limits
• Motor driver circuits needing precise current regulation
• Thermoelectric cooler drivers with bidirectional current control

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the CFE variant meets the required commercial temperature range specifications for your application environment. Ensure compatibility with standard surface mount assembly processes for the TSSOP package type.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high output current capability combined with precise external current threshold control is required. Consider the separate supply rails for input and output stages if minimizing power dissipation in the output stage is critical. Evaluate the need for independent sourcing and sinking limit adjustments versus fixed internal limits found in other amplifiers.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1970 family of power operational amplifiers designed for applications demanding robust current handling and precise control. The CFE designation specifies the commercial temperature grade within the plastic TSSOP-20 package family. It serves as a versatile building block for creating regulated voltage and current sources.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1970IFE#TRPBF: Identical electrical performance but specified for the wider industrial temperature range (-40°C to 85°C).

Instrumentation, Op Amps, Buffer Amps FAQ

How are the sourcing and sinking current limits adjusted?

The limits are independently programmed using separate control voltages applied to the VCSRC and VCSNK pins. These voltages set the sense thresholds with 2% accuracy.

What happens if the die temperature exceeds safe operating limits?

The internal thermal shutdown circuit activates, pulling the TSD flag low and protecting the chip. The device enters a protected state until the temperature decreases.