Ucc284dp-5 - Texas Instruments Ldo Voltage Regulators 0.5a Negative Linear Nos

US $110

Ottawa, Ontario, Canada
Jun 5th

Open on mobile:
QR code

UCC284DP-5 - Texas Instruments LDO Voltage Regulators 0.5A Negative Linear NOS / NEW Manufacturer: Texas Instruments Product Category: LDO Voltage Regulators RoHS: RoHS Compliant Details Brand: Texas Instruments Mounting Style: SMD/SMT Package / Case: SOIC-8 Output Voltage: - 5 V Output Current: 500 mA Number of Outputs: 1 Output Input Voltage MAX: - 15 V Output Type: Fixed Maximum Operating Temperature: + 85 C Load Regulation: 0.25 % Series: UCC284-5 Dropout Voltage: 0.2 V at 500 mA Dropout Voltage - Max: 500 mV at 500 mA Ib - Input Bias Current: 200 uA Input Voltage MIN: - 5.2 V Line Regulation: 10 mV Minimum Operating Temperature: - 40 C Packaging: Tube Quiescent Current: 250 uA Voltage Regulation Accuracy: 2.5 % Unit Weight: 72.600 mg Precision Negative Series Pass Voltage Regulation 0.2 V Dropout at 0.5 A Wide Input Voltage Range –3.2 V to –15 V Low Quiescent Current Irrespective of Load Simple Logic Shutdown Interfacing –5 V, –12 V, and Adjustable Output 2.5% Duty Cycle Short Circuit Protection description The UCC384-x family of negative linear-series pass regulators is tailored for low-dropout applications where low-quiescent power is important. Fabricated with a BCDMOS technology ideally suited for low input-to-output differential applications, the UCC384-x passes 0.5 A while requiring only 0.2 V of input-voltage headroom. Dropout voltage decreases linearly with output current, so that dropout at 50 mA is less than 20 mV. Quiescent current consumption for the device under normal (non-dropout) conditions is typically 200 µA. An integrated charge pump is internally enabled only when the device is operating near dropout with low VIN. This ensured that the device meets the dropout specifications even for maximum load current and a VIN of –3.2 V with only a modest increase in quiescent current. Quiescent current is always less than 350 µA, with the charge pump enabled. The quiescent current of the UCC384 does not increase with load current. Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off after a tON delay. The device then stays off for a period, tOFF, that is 40 times the tON delay. The device then begins pulsing on and off at the tON/tOFF duty cycle of 2.5%. This drastically reduces the power dissipation during short circuit such that heat sinking, if at all required, must only accommodate normal operation. An external capacitor sets the on time. The off time is always 40 times tON. The UCCx84-x can be shutdown to 45 µA (maximum) by pulling the SD/CT pin more positive than –0.7 V. To allow for simpler interfacing, the SD/CT pin may be pulled up to 6 V above the ground pin without turning on clamping diodes. Internal power dissipation is further controlled with thermal-overload protection circuitry. Thermal shutdown occurs if the junction temperature exceeds 140°C. The chip remains off until the temperature has dropped 20°C (TJ = 120°C). PRICE IS FOR 1.