UNISONIC TECHNOLOGIES CO., LTD UZ2085A Preliminary LINEAR INTEGRATED CIRCUIT 3A ADJUSTABLE/FIXED LOW DROPOUT LINEAR REGULATOR DESCRIPTION The UTC UZ2085A series are low dropout three-terminal regulators with 3A output current capability. These devices have been optimized for low voltage applications including VTT bus termination in which transient response and minimum input voltage are critical. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limitation provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. FEATURES * Fast transient response * Low dropout voltage at up to 3A * Trimmed current limit * On-chip thermal limiting * Ultra low current consumption (0.35mA typ.) * Ultra low Adjustment Current (7μA typ.) * Ultra low minimum Load (0.3mA typ.) * Stable with low ESR ceramic output capacitor (MLCC) RDERING INFORMATION Ordering Number Pin Assignment Package Lead Free Halogen Free 1 2 3 UZ2085AL-xx-TN3-T UZ2085AG-xx-TN3-T TO-252 A/G O I UZ2085AL-xx-TN3-R UZ2085AG-xx-TN3-R TO-252 A/G O I Note: 1. xx: Output Voltage, refer to Marking Information. 2. A: ADJ (for adjustable regulator), G: GND (for fixed regulator), O: VOUT, I: VIN www.unisonic.com.tw Copyright © 2013 Unisonic Technologies Co., Ltd Packing Tube Tape Reel 1 of 5 QW-R101-045. a UZ2085A Preliminary LINEAR INTEGRATED CIRCUIT MARKING INFORMATION PACKAGE VOLTAGE CODE TO-252 AD:ADJ MARKING BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R101-045. a UZ2085A Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 18 V Power Dissipation PD Internally Limited W Junction Temperature TJ +150 °C Operating Temperature TOPR -20 ~ +85 °C Storage Temperature TSTG -40 ~ +150 °C Note:1 Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER Junction to Ambient Junction to Case SYMBOL θJA θJC RATINGS 118 12 UNIT °C/W °C/W ELECTRICAL CHARACTERISTICS (TA=25°C, COUT=22μF, unless otherwise specified.) For UZ2085A-ADJ (Adjustable Voltage) PARAMETER SYMBOL Reference Voltage VREF Line Regulation ∆VOUT Load Regulation ∆VOUT Dropout Voltage VD Current Limit ILIMIT Adjust Pin Current IADJ Adjust Pin Current Change ∆IADJ Minimum Load Current IO(MIN) Ripple Rejection RR Thermal Regulation Temperature Stability ∆VOUT Long-Term Stability ∆VOUT Output Noise(% of VOUT) eN Thermal Shutdown TEST CONDITIONS 1.5V≤(VIN - VOUT) ≤8.25V, 10mA≤IOUT≤3A (VOUT +1.5V)≤ VIN ≤12V, IOUT=10mA (VIN -VOUT)=3V, 10mA ≤ IOUT ≤3A ∆VREF%=1%, lOUT=3A (VIN-VOUT)=2V (VOUT +1.5V)≤VIN≤12V, 10mA ≤ IOUT ≤3A (VOUT +1.5V) ≤ VIN ≤ 12V f=120Hz,Tantalum,(VIN-VOUT)=3V IOUT=3A TA=25°C,30ms pulse TA =125°C, 1000hr TA =25°C,10Hz ≤ f ≤10kHz UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN. 0.98 3.1 TYP. 1.0 0.005 0.05 1.2 5.8 7 0.3 0.3 45 0.004 0.5 0.03 0.003 150 MAX. 1.02 0.2 0.5 1.40 10 2 1 0.02 1.0 UNIT V % % V A μA μA mA dB %/W % % % °C 3 of 5 QW-R101-045. a UZ2085A Preliminary LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT UZ2085A-ADJ VOUT VIN VIN=12V + 22μF ADJ VOUT=VREF(1+R2/R1)+IADJ×R2 9V at 3A R1 0.93kΩ + 22μF R2 7.4kΩ The UTC UZ2085A also supports MLCC. UZ2085A-ADJ VOUT VIN VIN=12V 22μF ADJ VOUT=VREF(1+R2/R1)+IADJ*R2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9V at 3A R1 0.93kΩ 22μF R2 7.4kΩ 4 of 5 QW-R101-045. a UZ2085A LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTICS Power (W) Preliminary UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R101-045. a