UNISONIC TECHNOLOGIES CO., LTD LOW DROP FIXED AND ADJUSTABLE POSITIE OLTAGE REGULATORS DESCRIPTION The UTC is a low dropout, 3-terminal positive voltage regulator designed to provide output current up to 800/1A, There are adjustable version ( REF =) and various fixed versions. FEATURES * Low dropout voltage * Suitable for SCSI-2 active termination if OUT set to 2.85 * Output current up to 0.8A for 1117 and 1.0A for 1117A * Built-in current limit and over temperature protection * Available in ±1%(at 25 C) and 2% in all temperature range * Low current consumption *Pb-free plating product number: LD1117L-xx / LD1117AL-xx ORDERING INFORMATION Order Number 2 Package Normal Lead Free Plating Pin Assignment LD11171-xx-AA3-2-3 LD11171L-xx-AA3-2-3 SOT-223 LD11171-xx-AB3-2-3 LD11171L-xx-AB3-2-3 SOT-89 A: GOI LD11171-xx-TA3-2-3 LD11171L-xx-TA3-2-3 TO-220 B: OGI LD11171-xx-TN3-2-3 LD11171L-xx-TN3-2-3 TO-252 C: GIO LD11171-xx-TQ2-2-3 LD11171L-xx-TQ2-2-3 TO-263 D: IGO LD11171-xx-TQ3-2-3 LD11171L-xx-TQ3-2-3 TO-263-3 LD11171-xx-S08-2-3 LD11171L-xx-S08-2-3 SOP-8 GOOIxOOx Note: Pin Assignment: I: IN O: G:GND 3 Packing R: Tape Reel T: Tube 1 of 12 Copyright 2005 Unisonic Technologies Co., Ltd
MARKING INFORMATION PACKAGE OLTAGE CODE MARKING SOT-89 SOT-223 12 :1.2 15 :1.5 18 :1.8 25 :2.5 2J :2.85 30 :3.0 33 :3.3 36 :3.6 50 :5.0 AD :ADJ TO-220 TO-252 TO-263 TO-263-3 Note: Current code: Blank: 0.8A A: 1A PIN CONFIGURATION GND 1 8 NC OUT 2 7 OUT OUT 3 6 OUT IN 4 5 NC UNISONIC TECHNOLOGIES CO., LTD 2 of 12
BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD 3 of 12
ABSOLUTE MAXIMUM RATINGS (Ta=25 ) PARAMETER SYMBOL RATINGS UNIT DC Input oltage IN 18 Power Dissipation P D Internally limited Junction Temperature T J +150 C Storage temperature T STG -65 ~ +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. RECOMMENDED OPERATING RATINGS PARAMETER SYMBOL RATINGS UNIT Input oltage IN 15 Operating Junction Temperature Range T J 0 ~ +125 C ELECTRICAL CHARACTERISTICS (Ta=25, refer to the test circuits, T J =0 to 125 C, Co=10μF unless otherwise specified) For -1.2 IN =3.2, I OUT =10, T J =25 C 1.188 0 1.212 IN =2.7 to 8 1.176 0 1.224 LD1117A : I OUT =0 ~ 1.0A Line Regulation Δ IN =2.7 to 8, I OUT =0 1 6 m Δ IN =2.7 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 10 5 10 Current Limit I LIMIT IN =6.2, T J =25 C Minimum Load Current I O(MIN) IN =15 2 5 I OUT =40, f=120hz, T J =25 C, IN =4.2, RIPPLE =1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 UNISONIC TECHNOLOGIES CO., LTD 4 of 12
ELECTRICAL CHARACTERISTICS(Cont.) For -1.5 IN =3.5, I OUT =10, T J =25 C 1.485 1.500 1.515 IN =3 to 8 1.470 1.500 1.530 LD1117A : I OUT =0 ~ 1.0A Line Regulation Δ IN =3 to 8, I OUT =0 1 6 m Δ IN =3 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 10 5 10 Current Limit I LIMIT IN =6.5, T J =25 C I OUT =40, f=120hz, T J =25 C, IN =4.5, RIPPLE =1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 For -1.8 IN =3.8, I OUT =10, T J =25 C 1.780 1.800 1.820 IN =3.3 to 8 1.760 1.800 1.840 Line Regulation Δ IN =3.3 to 8, I OUT =0 1 6 m Δ IN =3.3 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Operating Input oltage IN I OUT =100 10 Quiescent Current I Q IN 8 5 10 Current Limit I LIMIT IN =6.8, T J =25 C I OUT =40, f=120hz, T J =25 C, IN =5.5, ripple=1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 UNISONIC TECHNOLOGIES CO., LTD 5 of 12
ELECTRICAL CHARACTERISTICS(Cont.) For -2.5 IN =4.5,I OUT =10, 1% 2.475 2.500 2.525 T J =25 C 2% 2.450 2.500 2.550 IN =3.9 to 10 2% 2.450 2.500 2.550 LD1117A : I OUT =0 ~ 1.0A 4% 2.400 2.500 2.600 Line Regulation Δ IN =3.9 to 10, I OUT =0 1 6 m Δ IN =3.9 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 10 5 10 Current Limit I LIMIT IN =7.5, T J =25 C I OUT =40, f=120hz, T J =25 C, IN =5.5, ripple=1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 For -2.85 IN =4.85, I OUT =10, T J =25 C 2.828 2.850 2.880 IN =4.25 to 10 2.790 2.850 2.910 LD1117A : I OUT =0 ~ 1.0A Line Regulation Δ IN =4.25 to 10, Io=0 1 6 m Δ IN =4.25 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 10 5 10 Current Limit I LIMIT IN =7.85, T J =25 C I OUT =40, f=120hz, T J =25 C, IN =5.85, ripple=1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 UNISONIC TECHNOLOGIES CO., LTD 6 of 12
ELECTRICAL CHARACTERISTICS(Cont.) For -3.0 IN =5,I OUT =10,T J =25 C 1% 2.970 3.000 3.030 2% 2.940 3.000 3.060 IN =4.5 to 10 2% 2.940 3.000 3.060 LD1117A : I OUT =0 ~ 1.0A 4% 2.880 3.000 3.120 Line Regulation Δ IN =4.5 to 12, I OUT =0 1 6 m Δ IN =4.5 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 10 5 10 Current Limit I LIMIT IN =8, T J =25 C I OUT =40, f=120hz, T J =25 C, IN =6, RIPPLE =1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 For -3.3 IN =5.3,I OUT =10, 1% 3.267 3.300 3.333 T J =25 C 2% 3.235 3.300 3.365 IN =4.75 to 10 2% 3.235 3.300 3.365 LD1117A : I OUT =0 ~ 1.0A 4% 3.160 3.300 3.440 Line Regulation Δ IN =4.75 to 15, I OUT =0 1 6 m Δ IN =4.75 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 15 5 10 Current Limit I LIMIT IN =8.3, T J =25 C I OUT =40, f=120hz, T J =25 C, IN =6.3, RIPPLE =1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 UNISONIC TECHNOLOGIES CO., LTD 7 of 12
ELECTRICAL CHARACTERISTICS(Cont.) For -3.6 IN =5.6, I OUT =10, T J =25 C 3.564 3.600 3.636 IN =5 to 10 3.528 3.600 3.672 LD1117A : I OUT =0 ~ 1.0A Line Regulation Δ IN =5 to 15, I OUT =0 1 6 m Δ IN =5 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 15 5 10 Current Limit I LIMIT IN =8.6, Tj=25 C I OUT =40, f=120hz, T J =25 C, IN =6.6, RIPPLE =1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 For -5.0 IN =7,I OUT =10, T J =25 C 1% 4.950 5.000 5.050 2% 4.900 5.000 5.100 IN =6.5 to 15 2% 4.900 5.000 5.100 LD1117A : I OUT =0 ~ 1.0A 4% 4.800 5.000 5.200 Line Regulation Δ IN =6.5 to 15, I OUT =0 1 6 m Δ IN =6.5 Temperature stability Δ 0.5 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Quiescent Current I Q IN 15 5 10 Current Limit I LIMIT IN =10, T J =25 C I OUT =40, f=120hz, T J =25 C, IN =8, RIPPLE =1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 UNISONIC TECHNOLOGIES CO., LTD 8 of 12
ELECTRICAL CHARACTERISTICS(Cont.) For -ADJUSTABLE PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Reference oltage REF IN - =2, I OUT =10, T J =25 C 1.238 1.262 Reference oltage REF IN - =1.4 to 10 LD1117 : I OUT =10 ~ 800 1.225 1.275 LD1117A : I OUT =10 ~ 1000 Line Regulation Δ IN - =1.5 to 13.75, I OUT =10 0.035 0.200 % Δ IN - =3 LD1117 : I OUT =10 ~ 800 0.10 0.400 % LD1117A : I OUT =10 ~ 1000 Temperature stability Δ 0.50 % Long Term Stability Δ 1000 hrs, T J =125 C 0.3 % Operating Input oltage IN 15 Adjustment Pin Current I ADJ IN 15 60 120 μa Adjustment Pin Current Change ΔI ADJ IN - =1.4 to 10, LD1117 : I OUT =10 ~ 800 1 5 μa LD1117A : I OUT =10 ~ 1000 Minimum Load Current I O(MIN) IN =15 2 5 Current Limit I LIMIT IN - =5, T J =25 C Output Noise (%o) en B=10Hz to 10KHz, T J =25 C 0.003 % I OUT =40, f=120hz, T J =25 C, IN - =3, ripple=1pp I OUT =100 I OUT =500 I OUT =800 I OUT =1000 THERMAL DATA Thermal Resistance Junction-Case Thermal Resistance Junction-Ambient PARAMETER SYMBOL RATINGS UNIT SOT-223 15 SOP-8 20 TO-252 12 TO-220 4 TO-263 θ JC SOT-223 165 SOP-8 150 TO-252 θ JA 112 TO-220 54 TO-263 64 4 C/W C/W UNISONIC TECHNOLOGIES CO., LTD 9 of 12
TYPICAL APPLICATIONS UTC -5.0 IN + IN GND OUT + Floating Input 10μF FIG.1 Negative Supply 100μF = -5 110 110 4.75 to 5.25 + UTC - 2.85 IN GND 10μF + 22μF 110 110 18-27 Lines FIG.2 Active Terminator for SCSI-2 BUS FIG.3 Circuit for Increasing UNISONIC TECHNOLOGIES CO., LTD 10 of 12
APPLICATION NOTE of ADJUSTABLE The ADJUSTABLE has a reference voltage of between the OUT and ADJ pins. I ADJ is 60μA typ. (120μA max.) and ΔI ADJ is 1μA typ. (5μA max.). R1 is normally fixed to 120Ω. From figure 4 we obtain: = REF +R2(I ADJ + I R1 )= REF + R2(I ADJ + REF / R1)= REF (1+R2/R1) + R2 x I ADJ. Usually R2 value is in the range of few KΩ, so the R2 X I ADJ product could be neglected; then the above expression becomes: = REF (1+R2/R1) For better load regulation, realize a good Kelvin connection of R1 and R2 is important. Particularly R1 connection must be realized very close to OUT and ADJ pin, while R2 ground connection must be placed as near as possible to the negative Load pin. Ripple rejection can be improved by introducing a 10μF electrolytic capacitor placed in parallel to the R2 resistor (See Fig. 5) IN 10μF + UTC IN OUT ADJ R1 120Ω REF + 10μF R2 FIG.4 Adjustable Application Circuit FIG.5 Adjustable Application with improved Ripple Rejection. UNISONIC TECHNOLOGIES CO., LTD 11 of 12
TYPICAL PERFORMANCE CHARACTERISTICS Power (W) Reference oltage () () 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 12 of 12