Unitrode UC3834
The UC1834 family of integrated circuits is optimized for the design of low input-output differential linear regulators. With both positive and negative precision references, either polarity of regulator can be implemented.FEATURES
● Minimum VIN - VOUT Less Than 0.5V At 5A Load With External Pass Device● Equally Usable For Either Positive or Negative Regulator Design
● Adjustable Low Threshold Current Sense Amplifier
● Under And Over-Voltage Fault Alert With Programmable Delay
● Over-Voltage Fault Latch With 100mA Crowbar Drive Output
DESCRIPTION
A high gain amplifier and 200mA sink or source drive outputs facilitate high output current designs which use an external pass device. A current sense amplifier with a low, adjustable, threshold can be used to sense and limit currents in either the positive or negative supply lines. In addition, this series of parts has a fault monitoring circuit which senses both under and over-voltage fault conditions. After a user defined delay for transient rejection, this circuitry provides a fault alert output for either fault condition. In the over-voltage case, a 100mA crowbar output is activated. An over-voltage latch will maintain the crowbar output and can be used to shutdown the driver outputs.