UTC UNISONIC TECHNOLOGIES CO., LTD. 1 LINEAR INTEGRATED CIRCUIT LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS

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1 LOW DROP FIXED AND ADJUSTABLE POSITIE OLTAGE REGULATORS DESCRIPTION The UTC LD1117/A is a LOW DROP oltage Regulator able to provide up to 0.8/1.0A of Output Current, available even in adjustable version (ref=). Concerning fixed versions, are offered the following Output oltages: 1.5, 1.8, 2.5, 2.85, 3.0, 3.3, 3.6 and 5.0. The 2.85 type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, TO-252, TO-263, TO-263-3, SOP-8 and TO-220. The SOT-223, TO-263, TO and TO-252 surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficiency is assured by NPN pass transistor. In fact in the case, unlike than PNP one, the Quiescent Current flows mostly into the load. Only a very common 10µF minimum capacitor is needed for stability. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ±1% at 25 C. The ADJUSTABLE LD1117/A is pin to pin compatible with the other standard Adjustable voltage regulators maintaining the better performances in terms of Drop and Tolerance. 1 1 SOP-8 1 SOT-223 TO-220 TO : GND; 2,3,6,7: out; 4: in; 5,8: NC SOP-8 TO-252 TO FEATURES *Low dropout voltage (1 Typ.) *2.85 device performances are suitable for SCSI-2 active termination *Output current up to 0.8/1.0A *Fixed output voltage of: 1.5, 1.8, 2.5, 2,85, 3.0, 3.3, *3.6, 5.0 *Adjustable version availability (ref=) *Internal current and thermal limit *Available in ±1%(at 25 C) and 2% in all temperature range *Supply voltage rejection: 75dB (TYP) *Temperature range: 0 C to 125 C UTC UNISONIC TECHNOLOGIES CO., LTD. 1

2 MARKING INFORMATION PACKAGE SOT-223 TO-220 TO-252 TO-263 TO OLTAGE PIN PIN 1 PIN 2 PIN 3 MARKING 15:1.5 18:1.8 25:2.5 28: :3.0 33:3.3 36:3.6 50:5.0 AD:ADJ A GND OUT IN B OUT GND IN C GND IN OUT CURRENT OLTAGE LD1117 D IN GND OUT A GND OUT IN B OUT GND IN C GND IN OUT OLTAGE UTC LD1117 D IN GND OUT PIN DATE CURRENT PIN DATE Note: The current code A means output current up to 1.0A, while without A means output current up to 0.8A. BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL ALUE UNIT DC Input oltage IN 15 Power Dissipation Ptot 12 W Storage temperature Tstg -65 ~ +150 C Operating Junction Temperature Top 0 ~ +125 C Note: Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under there condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit could definitively damage the device. UTC UNISONIC TECHNOLOGIES CO., LTD. 2

3 THERMAL DATA PARAMETER SYMBOL ALUE UNIT Thermal Resistance Junction-case Rth-case SOT-223 SOP-8 TO-252 TO-220 TO C/W C/W C/W C/W C/W Thermal Resistance Junction-ambient Rthj-amb TO C/W APPLICATION CIRCUIT UTC LD1117/A-1.5 ELECTRICAL CHARACTERISTICS Output oltage o in=3.5, Io=10mA, Tj=25 C Output oltage o Io=0 to 800/1000mA, in=3 to 8 Line Regulation o in=3 to 8, Io=0mA 1 6 m Load Regulation o in=3, Io=0 to 800/1000mA 1 10 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 15 Quiescent Current Id in ma Output Current Io in=6.5, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=1000 ma Io=40mA, f=120hz, Tj=25 C, in=4.5, ripple=1pp db UTC UNISONIC TECHNOLOGIES CO., LTD. 3

4 UTC LD1117/A-1.8 ELECTRICAL CHARACTERISTICS Output oltage o in=3.8, Io=10mA, Tj=25 C Output oltage o Io=0 to 800/1000mA, in=3.3 to Line Regulation o in=3.3 to 8, Io=0mA 1 6 m Load Regulation o in=3.3, Io=0 to 800/1000mA 1 10 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 10 Quiescent Current Id in ma Output Current Io in=6.8, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in=5.5, ripple=1pp db UTC LD1117/A-2.5 ELECTRICAL CHARACTERISTICS Output oltage o in=4.5, Io=10mA, Tj=25 C ±1% ±2% Output oltage o Io=0 to 800/1000mA, ±2% in=3.9 to 10 ±4% Line Regulation o in=3.9 to 10, Io=0mA 1 6 m Load Regulation o in=3.9, Io=0 to 800/1000mA 1 10 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 15 Quiescent Current Id in ma Output Current Io in=7.5, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in=5.5, ripple=1pp db UTC UNISONIC TECHNOLOGIES CO., LTD. 4

5 UTC LD1117/A-2.85 ELECTRICAL CHARACTERISTICS Output oltage o in=4.85, Io=10mA, Tj=25 C Output oltage o Io=0 to 800/1000mA,in=4.25 to Line Regulation o in=4.25 to 10, Io=0mA 1 6 m Load Regulation o in=4.25, Io=0 to 800/1000mA 1 10 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 15 Quiescent Current Id in ma Output Current Io in=7.85, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in=5.85, ripple=1pp DB UTC LD1117/A-3.0 ELECTRICAL CHARACTERISTICS Output oltage o in=5, Io=10mA, Tj=25 C ±1% ±2% Output oltage o Io=0 to 800/1000mA, ±2% in=4.5 to 10 ±4% Line Regulation o in=4.5 to 12, Io=0mA 1 6 m Load Regulation o in=4.5, Io=0 to 800/1000mA 1 10 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 15 Quiescent Current Id in ma Output Current Io in=8, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in=6, ripple=1pp db UTC UNISONIC TECHNOLOGIES CO., LTD. 5

6 UTC LD1117/A-3.3 ELECTRICAL CHARACTERISTICS Output oltage o in=5.3, Io=10mA, Tj=25 C ±1% ±2% Output oltage o Io=0 to 800/1000mA, ±2% in=4.75 to 10 ±4% Line Regulation o in=4.75 to 15, Io=0mA 1 6 m Load Regulation o in=4.75, Io=0 to 800/1000mA 1 10 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 15 Quiescent Current Id in ma Output Current Io in=8.3, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in=6.3, ripple=1pp DB UTC LD1117/A-3.6 ELECTRICAL CHARACTERISTICS Output oltage o in=5.6, Io=10mA, Tj=25 C Output oltage o Io=0 to 800/1000mA, in=5 to 10 Line Regulation o in=5 to 15, Io=0mA 1 6 m Load Regulation o in=5, Io=0 to 800/1000mA 1 10 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 15 Quiescent Current Id in ma Output Current Io in=8.6, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in=6.6, ripple=1pp DB UTC UNISONIC TECHNOLOGIES CO., LTD. 6

7 UTC LD1117/A-5.0 ELECTRICAL CHARACTERISTICS Output oltage o in=7, Io=10mA, Tj=25 C ±1% ±2% Output oltage o Io=0 to 800/1000mA, ±2% in=6.5 to 15 ±4% Line Regulation o in=6.5 to 15, Io=0mA 1 10 m Load Regulation o in=6.5, Io=0 to 800/1000mA 1 15 m Temperature stability o 0.5 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in Io=100mA 15 Quiescent Current Id in ma Output Current Io in=10, Tj=25 C ma Output Noise oltage en B=10Hz to 10KHz, Tj=25 C 100 µ Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in=8, ripple=1pp db UTC LD1117/A-ADJUSTABLE ELECTRICAL CHARACTERISTICS Reference oltage ref in-o=2, Io=10mA, Tj=25 C Reference oltage ref Io=10 to 800/1000mA, in-o=1.4 to Line Regulation o in-o=1.5 to 13.75, Io=10mA % Load Regulation o in-o=3, Io=10 to 800/1000mA % Temperature stability o 0.50 % Long Term Stability o 1000 hrs, Tj=125 C 0.3 % Operating Input oltage in 15 Adjustment Pin Current Iadj in µa Adjustment Pin Current Change Iadj in-o=1.4 to 10, Io=10 to 800/1000mA 1 5 µa Minimum Load Current Io(min) in= ma Output Current Io in-o=5, Tj=25 C ma Output Noise (%o) en B=10Hz to 10KHz, Tj=25 C % Supply oltage SR Dropout oltage d Io=100mA Io=40mA, f=120hz, Tj=25 C, in-o=3, ripple=1pp db UTC UNISONIC TECHNOLOGIES CO., LTD. 7

8 TYPICAL APPLICATIONS FIG.1 Negative Supply FIG.2 Active Terminator for SCSI-2 BUS UTC UNISONIC TECHNOLOGIES CO., LTD. 8

9 FIG.3 Circuit for Increasing Output oltage FIG.4 oltage Regulator With Reference UTC UNISONIC TECHNOLOGIES CO., LTD. 9

10 FIG.5 Battery Backed-up Regulated Supply FEEDBACK PATH UTC UNISONIC TECHNOLOGIES CO., LTD. 10

11 FIG.6 Post-Regulated Dual Supply UTC UNISONIC TECHNOLOGIES CO., LTD. 11

12 LD1117/A ADJUSTABLE APPLICATION NOTE The LD1117/A ADJUSTABLE has a thermal stabilized ±0.012 reference voltage between the OUT and ADJ pins. I ADJ is 60µA typ. (120µA max.) and I ADJ is 1µA typ. (5µA max.). R1 is normally fixed to 120Ω. From figure 7 we obtain: OUT = REF +R2(I ADJ + I R1 )= REF + R2(I ADJ + REF / R1)= REF (1+R2/R1) + R2 x I ADJ. In normal application R2 value is in the range of few Kohm,, so the R2 X I ADJ product could not be considered in the OUT calculation; then the above expression becomes: OUT = REF (1+R2/R1) In order to have the better load regulation it is important to realize a good Kelvin connection of R1 and R2 resistors. In particular 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. 8) FIG.7 Adjustable Output oltage Application Circuit FIG.8 Adjustable Output oltage Application with improved Ripple. UTC UNISONIC TECHNOLOGIES CO., LTD. 12

13 TYPICAL CHARACTERISTICS Fig.1 Reference oltge vs. Temperature Fig.2 Output oltage vs. Temperautre OUT SET WITH 1% RESISTORS reference voltage () Output oltage() out=3.6 out= Junction Temperature( C) Note: LD1117 Only Junction Temperature( C) Fig.3 Maximum Power Dissipation 10 8 Power (W) 6 4 SOT-223 TO-263 & TO Case Temperature( C) 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. UTC UNISONIC TECHNOLOGIES CO., LTD. 13