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UNISONIC TECHNOLOGIES CO., LTD UZ1085
3A ADJUSTABLE/FIXED LOW DROPOUT LINEAR REGULATOR
DESCRIPTION
The UZ1085-xx 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, where 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 limiting provides protection against any combination of overload and ambient temperature that would create excessive junction temperatures.
LINEAR INTEGRATED CIRCUIT
1
1 TO-252 TO-220
1
1 TO-263 TO-263-3
FEATURES
*Fast transient response *Low dropout voltage at up to 3A *Load regulation:0.05% typical *Trimmed current limit *On-chip thermal limiting
*Pb-free plating product number: UZ1085L-xx
ORDERING INFORMATION
Order Number Normal Lead Free Plating UZ1085-xx-TA3-A-T UZ1085L-xx-TA3-A-T UZ1085-xx-TN3-A-R UZ1085L-xx-TN3-A-R UZ1085-xx-TN3-A-T UZ1085L-xx-TN3-A-T UZ1085-xx-TQ2-A-R UZ1085L-xx-TQ2-A-R UZ1085-xx-TQ2-A-T UZ1085L-xx-TQ2-A-T UZ1085-xx-TQ3-A-R UZ1085L-xx-TQ3-A-R UZ1085-xx-TQ3-A-T UZ1085L-xx-TQ3-A-T Package TO-220 TO-252 TO-252 TO-263 TO-263 TO-263-3 TO-263-3 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 Packing Tube Tape Reel Tube Tape Reel Tube Tape Reel Tube
Note: 1. xx: Output Voltage, refer to Marking Information. 2. A: ADJ (for adjustable regulator), G: GND (for fixed regulator)
UZ1085L-xx-TA3-A-T (1)Packing Type (2)Pin Assignment (3)Package Type (4)Output Voltage Code (5)Lead Plating (1) R: Tape Reel, T: Tube (2) refer to Pin Assignment (3) TA3: TO-220, TN3: TO-252, TQ2: TO-263, TQ 3: TO-263-3 (4) xx: refer to Marking Information (5) L: Lead Free Plating Blank: Pb/Sn ,
www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd
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MARKING INFORMATION
PACKAGE TO-220 TO-252 TO-263 TO-263-3 VOLTAGE CODE 15 18 25 33 50 AD :1.5V :1.8V :2.5V :3.3V :5.0V :ADJ
LINEAR INTEGRATED CIRCUIT
MARKING
UTC UZ1085
Voltage Code
Lead Plating Pin Code Date Code
1
2
3
THERMAL DATA
PARAMETER TO-252 Thermal Resistance Junction-Case TO-220 TO-263 SYMBOL RATINGS 12 4 4 UNIT C/W
JC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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ABSOLUTE MAXIMUM RATINGS
LINEAR INTEGRATED CIRCUIT
PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN 18 V (VIN - VOUT) * IOUT See Figure 1 Junction Temperature TJ +125 Operating Temperature TOPR -20 ~ +85 Storage Temperature TSTG -40 ~ +150 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. 2. The device is guaranteed to meet performance specification within 0~+70 operating temperature range and assured by design from -20~+85.
ELECTRICAL CHARACTERISTICS (Ta=25, COUT=22F, unless otherwise specified.)
For UZ1085-ADJ(Adjustable) PARAMETER Reference Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Adjust Pin Current Adjust Pin Current Change Minimum Load Current Quiescent Current Ripple Rejection Thermal Regulation Temperature Stability Long-Term Stability Output Noise(% of VOUT) Thermal Shutdown For UZ1085-xx(Fixed Voltage) PARAMETER SYMBOL TEST CONDITIONS 3.0VVIN8.5V, 10mAIOUT3A UZ1085-15 3.3VVIN8.8V, 10mAIOUT3A UZ1085-18 Output Voltage VOUT 4.0VVIN9.5V, 10mAIOUT3A UZ1085-25 4.8VVIN10.3V, 10mAIOUT3A UZ1085-33 6.5VVIN12V, 10mAIOUT3A UZ1085-50 Line Regulation VOUT (VOUT +1.5V)VIN12V,IOUT=10mA Load Regulation VOUT (VIN - VOUT)=3V, 10mAIOUT3A VREF%=1%, lOUT=3A Dropout Voltage VD Current Limit ILIMIT (VIN-VOUT)=2V Minimum Load Current Iadj 1.5V(VIN-VOUT)12V Quiescent Current IQ VIN=12V f=120Hz, Tantalum, Ripple Rejection RR (VIN - VOUT)=3V,IOUT=3A Ta=25,30ms pulse Thermal Regulation Temperature Stability VOUT Ta=125, 1000hr Long-Term Stability VOUT Ta=25,10Hzf10kHz Output Noise(% of VOUT) eN Thermal shutdown MIN. TYP. MAX. UNIT 1.470 1.5 1.530 1.764 1.8 1.830 V 2.450 2.5 2.550 3.234 3.3 3.366 4.900 5.0 5.100 0.005 0.2 % 0.05 0.5 % 1.30 1.40 V 3.1 4 A 10 mA 4 13 mA 60 72 0.004 0.5 0.03 0.003 150 0.02 1.0 dB %/W % % % C 3 of 6
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SYMBOL VREF VOUT VOUT VD ILIMIT Iadj Iadj IO(MIN) IQ RR VOUT VOUT eN
TEST CONDITIONS 1.5V(VIN - VOUT)8.25V 10mAIOUT3A (VOUT +1.5V) VIN12V, IOUT=10mA (VIN - VOUT)=3V, 10mAIOUT3A VREF%=1%, lOUT=3A (VIN-VOUT)=2V 1.5VVIN - VOUT12V 10mAIOUT3A 1.5V(VIN-VOUT)12V VIN=12V f=120Hz,Tantalum,(VIN-VOUT)=3V IOUT=3A Ta=25,30ms pulse Ta=125, 1000hr Ta=25,10Hzf10kHz
MIN. 1.225
TYP. MAX. UNIT 1.25 0.005 0.05 1.30 4 35 0.2 4 1.275 0.2 0.5 1.40 120 5 10 13 V % % V A A A mA mA dB 0.02 1.0 %/W % % % C
3.1
60
72 0.004 0.5 0.03 0.003 150
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
UZ1085
TYPICAL APPLICATION CIRCUIT
LINEAR INTEGRATED CIRCUIT
VIN=12V 22F +
UZ1085-ADJ VOUT VIN ADJ R1 124 R2 768 +
9V at 3A 22F
VOUT=VREF(1+R2/R1)+IADJ*R2
VIN=9V 22F +
VIN
UZ1085-3.3 VOUT GND + 22F
3.3V at 3A
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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TYPICAL CHARACTERISTICS
LINEAR INTEGRATED CIRCUIT
4
1.5 1.4 1. 3 1. 2 1.1 1.0 0.9 0.8 0.7 0 50 4 6 8 10 0 10 12 15 0 14 0.6 0.5 0 0.5 1 1.5 2 2.5 3.0 T=25 T=0 T=125
2
1
0 0 2 VIN-VOUT (V)
Dropout Voltage (V)
3
IOUT (Amps)
Output Current (A) Figure 2. Dropout Voltage vs.Output Current
Figure 1. Absolute Maximum Sate Operating Area
0.10
1.260 I=3A 1.255
Output Voltage Deviation (%)
0.05
Reference Voltage (V)
1.250 1.245 1.240 1.235 1.230 1.225 1.220 1.215
0 -0.05 -0.10 -0.15 -0.20 -75 -50 -25
0
25 50 75 100 125 150175
1.210 -75 -50 -25
0
25
50 75 100 125 150 175
Junction Temperature () Figure 3. Load Regulation vs.Temperature
Junction Temperature () Figure 4. Reference Voltage vs.Temperature
3.70 3.65
VOUT Set With 1% Resistors VOUT=3.6V
5
3.55 3.50 3.45 3.40 3.35 3.30 3.25 3.20 -75 -50 -25 0 25
UZ1085-ADJ
Minmum Load Current (mA)
Reference Voltage (V)
3.60
4
3
2
VOUT=3.3V
1
UZ1085-3.3 50 75 100 125 150 175 0 -75 -50 -25 0 25 50 75 100 125 150 175 Junction Temperature () Figure 6. Minimum Load Current vs.Temperature
Junction Temperature () Figure 5. Output Voltage vs.Temperature
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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TYPICAL CHARACTERISTICS(Cont.)
100 90 80 70 5.0 UZ1085-ADJ
LINEAR INTEGRATED CIRCUIT
Adjust Pin Current (|IA)
60 50 40 30 20 10 0 -75 -50 -25 0 25 50 75 100 125 150 175
Short-Circuit Current (A)
4.5
4.0
3.5
3.0 -75 -50 -25
0
25
50 75 100 125 150 175
Junction Temperature () Figure 7. Adjust Pin Current vs.Temperature 90 80 20
Junction Temperature () Figure 8. Short-Circuit Current vs.Temperature
Ripple Rejections (dB)
70 60 50 40 30 20 10 0 10 (VIN - VOUT)3V 0.5VVRIPPLE2V IOUT=3A 100 10k 1k Frequency (Hz) 100k
15
Power (W)
10
5 10 15 0 50 0 0 0 50 60 70 80 90 100 110 120 130 140 150 Case Temperature () Figure 10. Maximum Power Dissipation
Figure 9. Ripple Rejection vs.Frequency
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
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