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UC282TDTR-ADJ 데이터시트(PDF) 1 Page - Texas Instruments |
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UC282TDTR-ADJ 데이터시트(HTML) 1 Page - Texas Instruments |
1 / 19 page UC2821, UC2822, UC2823, UC282ADJ, UC3821, UC3822, UC3823, UC382ADJ FAST LDO LINEAR REGULATOR SLUS317B − JANUARY 2000 − REVISED FEBRUARY 2004 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Fast Transient Response D 10-mA to 3-A Load Current D Short Circuit Protection D Maximum Dropout of 450-mV at 3-A Load Current D Separate Bias and VIN Pins D Available in Adjustable or Fixed-Output Voltages D 5-Pin Package Allows Kelvin Sensing of Load Voltage D Reverse Current Protection description The UC382 is a low-dropout-linear regulator providing a quick response to fast load changes. Combined with its precision onboard reference, the UC382 excels at driving GTL and BTL buses. Due to its fast response to load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased when compared to standard LDO linear regulators. Dropout voltage (VIN to VOUT) is only 450 mV maximum at 100 °C and 350 mV typical at 3-A load. The onboard bandgap reference is stable with temperature and scaled for a 1.2-V input to the internal-power amplifier. The UC382 is available in fixed-output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage defaults to 1.2 V. block diagram + THERMAL SHUTDOWN 1.2 V BANDGAP REFERENCE R2 R1 3 5 SHORT CIRCUIT SENSE 2 1 4 UC382−ADJ UC382−1 (1.5 V) UC382−2 (2.1 V) UC382−3 (2.5 V) OPEN 0 2 k 500 Ω 2 k 1.5 k Ω 2 k 2.16 k Ω R1 R2 ADJ GND VOUT VIN VB UDG-00080 Copyright 2000−2004, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 5-PIN TO-263 TD PACKAGE (TOP VIEW) 5-PIN TO-220 T PACKAGE (TOP VIEW) Note: Tab = Ground All trademarks are the property of their respective owners. |
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