(China (Mainland))
Product Summary
The LT1166CN8 is a bias generating system for controlling class AB output current in high powered amplifiers. When connected with external transistors, the circuit becomes a unity-gain voltage follower. The LT1166CN8 is ideally suited for driving power MOSFET devices because it eliminates all quiescent current adjustments and critical transistor matching. Multiple output stages using the LT1166CN8 can be paralleled to obtain higher output current. Thermal runaway of the quiescent point is eliminated because the bias system senses the current in each power transistor by using a small external sense resistor. A high speed regulator loop controls the amount of drive applied to each power device. The LT1166CN8 can be biased from a pair of resistors or current sources and because it operates on the drive voltage to the output transistors, it operates on any supply voltage.
Parametrics
LT1166CN8 absolute maximum ratings: (1)Supply Current (Pin 1 or Pin 4): 75mA; (2)Differential Voltage (Pin 2 to Pin 3): ±6V; (3)Output Short-Circuit Duration (Note 1): Continuous; (4)Specified Temperature Range (Note 2): 0℃ to 70℃; (5)Operating Temperature Range: –40℃ to 85℃; (6)Storage Temperature Range: –65℃ to 150℃; (7)Junction Temperature (Note 3): 150℃; (8)Lead Temperature (Soldering, 10 sec): 300℃.
Features
LT1166CN8 features: (1)Set Class AB Bias Currents; (2)Eliminates Adjustments; (3)Eliminates Thermal Runaway of IQ; (4)Corrects for Device Mismatch; (5)Simplifies Heat Sinking; (6)Programmable Current Limit; (7)May Be Paralleled for Higher Current; (8)Small SO-8 or PDIP Package.
Diagrams
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 LT1166CN8 |
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IC BIAS SYS AUTO PWR-OUTPUT 8DIP |
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LT1166CN8#PBF |
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IC BIAS SYS AUTO PWR-OUTPUT 8DIP |
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