UNISONIC TECHNOLOGIES CO., LTD UZ1086 LINEAR INTEGRATED CIRCUIT 1.5A ADJUSTABLE/FIXED LOW DROPOUT LINEAR REGULATOR DESCRIPTION The UTC UZ1086 and UZ1086-1.8V, 2.5V, 2.85V, 3.3V and 5V are low dropout three-terminal regulators with 1.5A output current capability. These devices have been optimized for low voltage where transient response and minimum input voltage are critical. The 2.85V version is designed specifically to be used in Active Terminators for SCSI bus. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the UZ1086 flows into the load, increasing efficiency. FEATURES * Low dropout voltage * Load regulation: 0.05% typical * Trimmed current limit * On-chip thermal limiting * Three-terminal adjustable or fixed 1.8V, 2.5V, 2.85V, 3.3V, 5V ORDERING INFORMATION Ordering Number Package Lead Free Halogen-Free UZ1086L-xx-AA3-R UZ1086G-xx-AA3-R SOT-223 UZ1086L-xx-TA3-T UZ1086G-xx-TA3-T TO-220 UZ1086L-xx-TN3-R UZ1086G-xx-TN3-R TO-252 UZ1086L-xx-TN3-T UZ1086G-xx-TN3-T TO-252 UZ1086L-xx-TQ2-R UZ1086G-xx-TQ2-R TO-263 UZ1086L-xx-TQ2-T UZ1086G-xx-TQ2-T TO-263 UZ1086L-xx-TQ3-R UZ1086G-xx-TQ3-R TO-263-3 UZ1086L-xx-TQ3-T UZ1086G-xx-TQ3-T TO-263-3 Note: 1. xx: Output Voltage, refer to Marking Information. 2. A: ADJ (for adjustable regulator), G: GND (for fixed regulator) www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd Pin Assignment 1 2 3 A/G O I A/G O I A/G O I A/G O I A/G O I A/G O I A/G O I A/G O I Packing Tape Reel Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube 1 of 6 QW-R102-008,K UZ1086 LINEAR INTEGRATED CIRCUIT MARKING INFORMATION PACKAGE TO-220 TO-252 TO-263 TO-263-3 VOLTAGE CODE 18 25 2J 33 50 AD :1.8V :2.5V :2.85V :3.3V :5.0V :ADJ MARKING LOT Code Voltage Code UTC UZ1086 XX 1 2 L: Lead Free G: Halogen Free Date Code 3 SOT-223 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R102-008,K UZ1086 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 7.5 V Junction Temperature TJ +125 °C Operating Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -40 ~ +150 °C Note: 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 Case SYMBOL TO-252 TO-220 TO-263 SOT-223 θJC RATINGS 12 4 4 15 UNIT °C/W °C/W °C/W °C/W ELECTRICAL CHARACTERISTICS (VIN≤7V, TJ=25°C, unless otherwise specified.) PARAMETER Reference Voltage UZ1086-1.8 UZ1086-2.5 Output Voltage UZ1086-2.85 UZ1086-3.3 UZ1086-5.0 Line Regulation (Note1,2) Load Regulation (Note1,2) Dropout Voltage Current Limit Adjust Pin Current SYMBOL VREF VOUT ΔVOUT ΔVOUT VD ILIMIT IADJ Adjust Pin Current Change ΔIADJ Minimum Load Current Quiescent Current IO(MIN) IQ Ripple Rejection RR * * * * * * * * * * TEST CONDITIONS 1.5V≤ (VIN-VOUT ) ≤5.75V 10mA≤IOUT≤1A 3.3V≤VIN≤7V 4V≤VIN≤7V 10mA≤IOUT≤1A 4.35V≤VIN≤7V 4.8V≤VIN≤7V 6.5V≤VIN≤7V (VOUT+1.5V) ≤VIN≤7V,IOUT=10mA VIN-VOUT=2V, 10mA≤IOUT≤1A IOUT=1.5A VIN-VOUT=2V 1.5V≤ (VIN - VOUT ) ≤5.75V, * 10mA≤IOUT≤1A * 1.5V≤ (VIN -VOUT) ≤5.75V * VIN =VOUT+1.25V f=120Hz, COUT=22μF, Tantalum VIN -VOUT=3V, IOUT=1.5A TA=25°C, 30ms pulse * TA=125°C, 1000hrs TA=25°C, 10Hz≤f≤10kHz Junction Temperature MIN. TYP. MAX. UNIT 1.225 1.25 1.275 V 1.764 2.450 2.793 3.234 4.900 1.6 60 1.80 2.50 2.85 3.30 5.00 0.005 0.05 1.30 2 35 1.836 2.550 2.907 3.366 5.100 0.2 0.5 1.50 120 V V V V V % % V A μA 0.2 5 μA 4 10 13 mA mA 72 dB Thermal Regulation 0.004 0.02 %/W Temperature Stability ΔVOUT 0.5 % Long-Term Stability ΔVOUT 0.03 1.0 % RMS Output Noise VOUT 0.003 % Thermal shutdown 155 °C Thermal Shutdown Hysteresis 10 °C Note: 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. 2. Line and load regulation are guaranteed up to the maximum power dissipation. Power dissipation is determined by input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/output voltage range. * stand for specifications which apply over the designed operating temperature range. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R102-008,K UZ1086 LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT VIN=3.3V + 10μF VIN UZ1086 ADJ VOUT=VREF(1+R2/R1)+IADJ*R2 VIN=5V + 10μF UZ1086-2.85 VIN VOUT GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 1.5V at 1.5A + 22μF VOUT R1 124Ω R2 24.9Ω + 22 F 2.85V at 1.5A 4 of 6 QW-R102-008,K UZ1086 TYPICAL CHARACTERISTICS Fig. 2 Load Regulation vs. Temperature Fig. 1 Dropout Voltage vs. Output Current 1.5 0.1 1.3 1.2 Dropout Voltage Deviation(%) Dropout Voltage (V) 1.4 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0 0 0.3 0.6 0.9 1.2 Output Current (A) 0.05 -0.05 -0.1 -0.15 -0.2 -75 -50 -25 0 1.5 Fig. 4 Output Voltage vs. Temperature 3.7 3.65 1.24 3.6 Reference Voltage(V) Reference Voltage(V) 1.25 1.23 1.225 1.22 1.215 1.21 25 50 75 100 125150 175 Junction Temperature(°C) 1.245 1.235 I=1A 0 Fig. 3 Reference Voltage vs. Temperature 1.205 VOUT SET WITH 1% RESISTORS VOUT =3.6V 3.55 3.5 3.45 3.4 3.35 VOUT =3.3V 3.3 3.25 1.2 -75 -50 -25 0 UZ1086 adjustable Only 3.2 -75 -50 -25 0 25 50 75 100 125150 175 25 50 75 100 125150 175 Junction Temperature(°C) Junction Temperature(°C) Fig. 5 Minimum Load Current vs. Temperature Fig. 6 Adjust Pin Current vs. Temperature 5 100 Note1.UZ1086 Only 90 4 80 Adjust Pin Current (μA) Minimum Load Current (mA) LINEAR INTEGRATED CIRCUIT 3 2 1 70 60 50 40 30 20 10 0 -75 -50 -25 0 25 50 75 100 125 150 175 Junction Temperature(°C) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 0 -75 -50 -25 0 25 50 75 100 125150 175 Junction Temperature(°C) 5 of 6 QW-R102-008,K UZ1086 TYPICAL CHARACTERISTICS(Cont.) Ripple Rejection (dB) Short- Circuit Current (A) LINEAR INTEGRATED CIRCUIT 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 6 of 6 QW-R102-008,K