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UC382

ACTIVE

3-A, ultra-low-dropout voltage regulator with reverse current protection from 0°C to 100°C

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UC382

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 7.5 Vin (min) (V) 1.7 Vout (max) (V) 6 Vout (min) (V) 1.2 Rating Catalog PSRR at 100 KHz (dB) 38 Iq (typ) (mA) 30 Load capacitance (min) (µF) 100 Regulated outputs (#) 1 Features Reverse Current Protection Accuracy (%) 1.3 Dropout voltage (Vdo) (typ) (mV) 350 Operating temperature range (°C) 0 to 100
Output options Adjustable Output, Fixed Output Iout (max) (A) 3 Vin (max) (V) 7.5 Vin (min) (V) 1.7 Vout (max) (V) 6 Vout (min) (V) 1.2 Rating Catalog PSRR at 100 KHz (dB) 38 Iq (typ) (mA) 30 Load capacitance (min) (µF) 100 Regulated outputs (#) 1 Features Reverse Current Protection Accuracy (%) 1.3 Dropout voltage (Vdo) (typ) (mV) 350 Operating temperature range (°C) 0 to 100
TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Fast Transient Response
  • 10-mA to 3-A Load Current
  • Short Circuit Protection
  • Maximum Dropout of 450-mV at 3-A Load Current
  • Separate Bias and VIN Pins
  • Available in Adjustable or Fixed-Output Voltages
  • 5-Pin Package Allows Kelvin Sensing of Load Voltage
  • Reverse Current Protection

All trademarks are the property of their respective owners.
  • Fast Transient Response
  • 10-mA to 3-A Load Current
  • Short Circuit Protection
  • Maximum Dropout of 450-mV at 3-A Load Current
  • Separate Bias and VIN Pins
  • Available in Adjustable or Fixed-Output Voltages
  • 5-Pin Package Allows Kelvin Sensing of Load Voltage
  • Reverse Current Protection

All trademarks are the property of their respective owners.

The UC382 is a low-dropout-linear regulator providing a quick response to fast load changes. Combined with its precision on-board 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.

The UC382 is a low-dropout-linear regulator providing a quick response to fast load changes. Combined with its precision on-board 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.
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Technical documentation

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Type Title Date
* Data sheet UC282-x, UC382-x: Fast LDO Linear Regulator datasheet (Rev. B) 23 Feb 2004
Application note LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
Application note LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
User guide DEM-TO263LDO Demonstration Fixture 15 Oct 2003
Application note High Current LDO Linear Reglators (UCCx81-ADJ, UCx82-ADJ, UCCx83-ADJ, UCx85-AD 07 May 2002

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TO-220 (KC) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian
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