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UC285-3

Texas Instruments
Part Number UC285-3
Manufacturer Texas Instruments
Description Fast Transient Response 5-A Low-Dropout Regulator
Published Apr 21, 2020
Detailed Description ą UC285Ć1, UC285Ć2, UC285Ć3, UC285ĆADJ, UC385Ć1, UC385Ć2, UC385Ć3, UC385ĆADJ FAST TRANSIENT RESPONSE 5ĆA LOWĆDROPOUT REG...
Datasheet PDF File UC285-3 PDF File

UC285-3
UC285-3

Overview
ą UC285Ć1, UC285Ć2, UC285Ć3, UC285ĆADJ, UC385Ć1, UC385Ć2, UC385Ć3, UC385ĆADJ FAST TRANSIENT RESPONSE 5ĆA LOWĆDROPOUT REGULATOR SLUS212F − NOVEMBER 1999 − REVISED MAY 2009 D Fast Transient Response D 10-mA to 5-A Load Current D Short Circuit Protection D Maximum Dropout of 500-mV at 5-A Load Current D Separate Bias (VB) 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 5-PIN TO-220 T PACKAGE (TOP VIEW) 5-PIN TO-263 TD PACKAGE (TOP VIEW) description Note: Tab = Ground The UC385 is a low dropout linear regulator providing a quick response to fast load changes.
Combined with its precision onboard reference, the UC385 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 490 mV maximum and 350 mV typical at 5-A load (0°C to 100°C).
The onboard bandgap reference is stable with temperature and scaled for a 1.
2 V input to the internal power amplifier.
The UC385 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 VB 1 THERMAL SHUTDOWN 1.
2 V BANDGAP REFERENCE + UC382−ADJ UC382−1 (1.
5 V) UC382−2 (2.
1 V) UC382−3 (2.
5 V) R1 OPEN 2 kΩ 2 kΩ 2 kΩ R2 0 500 Ω 1.
5 k Ω 2.
16 k Ω 2 VIN R1 R2 SHORT CIRCUIT SENSE 35 4 GND ADJ VOUT UDG-00084 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.
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PRODUCTION DATA information is current as of publication d...


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