LT1970IFE#PBF

LT1970 is a ±500mA power op-amp with precise externally controlled current limiting. Separate control voltages program the sourcing and sinking current limit sense thresholds with 2% accuracy. Output current may be boosted by adding external power transistors. The circuit operates with single or split power supplies from 5V to 36V total supply voltage. To reduce power dissipation it is possible to power the output stage (V+,V-) from independent, lower voltage rails. Open collector status flags signal current limit circuit activation, as well as thermal shutdown of the amplifier. An enable logic input puts the amplifier into a low power, high impedance output state when pulled low. Thermal shutdown and a ±800mA fixed current limit protect the chip under fault conditions. It is widely used in application such as automatic test equipment, laboratory power supplies, motor drivers, thermoelectric cooler driver etc.

• Shutdown/enable control input
• Fail safe current limit and thermal shutdown
• Slew rate is 1.6V/µs typical
• Gain bandwidth product is 3.6MHz typical
• Fast current limit response: 2MHz bandwidth
• Input bias current is -160nA typical
• Input noise voltage is 3µVP-P typical at (0.1Hz to 10Hz)
• Settling time is 8µs typical at (0.01%, VOUT = 0V to 10V, AV = –1, RL = 1K)
• Operating temperature is -40°C to 85°C
• Package style is 20-lead plastic TSSOP

Ghi chú

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