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| LD1117Axx Low drop fixed and adjustable positive voltage regulators Features Low dropout voltage (1.15 V typ. @ IOUT = 1 A, 25 C) Very low quiescent current (5 mA typ. @ 25 C) Output current up to 1 A Fixed output voltage of: 1.2 V, 1.8 V, 2.5 V, 3.3 V Adjustable version availability (VREL = 1.25 V) Internal current and thermal limit Only 10 F for stability Available in 2 % (at 25 C) and 4 % in full temperature range High supply voltage rejection: - 80 dB typ. (at 25 C) Temperature range: 0 C to 125 C DPAK D2PAK/A TO-220 SOT-223 stability. Only chip trimming allows the regulator to reach a very tight output voltage tolerance, within 2 % at 25 C. Description The LD1117A is a low drop voltage regulator able to provide up to 1 A of output current, available even in adjustable version (VREF = 1.25 V). Concerning fixed versions, are offered the following Output Voltages: 1.2 V, 1.8 V, 2.5 V and 3.3 V. The device is supplied in: SOT-223, DPAK, DPAK/A and TO-220. Surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficiency is assured by NPN pass transistor. Only a very common 10 F minimum capacitor is needed for Table 1. Device summary Part numbers LD1117AXX12 LD1117AXX18 LD1117AXX25 LD1117AXX33 LD1117AXX April 2008 Rev 20 1/29 www.st.com 29 Contents LD1117Axx Contents 1 2 3 4 5 6 7 8 9 10 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 LD1117A adjustable: application note . . . . . . . . . . . . . . . . . . . . . . . . . 15 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2/29 LD1117Axx Diagram 1 Figure 1. Diagram Block diagram 3/29 Pin configuration LD1117Axx 2 Figure 2. Pin configuration Pin connections (top view) SOT-223 DPAK TO-220 D2PAK/A Note: The TAB is connected to the VOUT. 4/29 LD1117Axx Maximum ratings 3 Table 2. Symbol VIN PD TSTG TOP Maximum ratings Absolute maximum ratings Parameter DC input voltage Power dissipation Storage temperature range Operating junction temperature range Value 15 12 -40 to +150 0 to +125 Unit V W C C Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Over the above suggested max power dissipation a short circuit could definitively damage the device. Thermal data Parameter Thermal resistance junction-case Thermal resistance junction-ambient SOT-223 15 DPAK/A 3 DPAK 8 TO-220 3 50 Unit C/W C/W Table 3. Symbol RthJC RthJA 5/29 Schematic application LD1117Axx 4 Figure 3. Schematic application Application circuit (for other fixed output voltages) 6/29 LD1117Axx Electrical characteristics 5 Table 4. Electrical characteristics Electrical characteristics of LD1117A#12 (refer to the test circuits, TJ = 0 to 125 C, CO = 10 F, CI = 10 F, R = 120 between OUTGND, unless otherwise specified). Parameter Output voltage Output voltage Line regulation Load regulation Temperature stability Long term stability Operating input voltage Quiescent current Output current Output noise voltage Supply voltage rejection 1000 hrs, TJ = 125C IO = 100mA VI 8V, IO = 0mA VI - VO = 5V, TJ = 25C B =10Hz to 10kHz, TJ = 25C IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP IO = 100mA VD Dropout voltage IO = 500mA IO = 1A 60 1000 5 1200 100 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W V Test conditions VI = 5.3V, IO = 10mA, TJ = 25C IO = 0 to 1A, VI = 2.75 to 10V VI = 2.75 to 8V, IO = 0mA VI = 2.75V, IO = 0 to 1A Min. 1.176 1.152 Typ. 1.2 1.2 1 1 0.5 0.3 10 10 Max. 1.224 1.248 6 10 Unit V V mV mV % % V mA mA V dB Symbol VO VO VO VO VO VO VI Id IO eN SVR VO(pwr) Thermal regulation Ta = 25C, 30ms Pulse 7/29 Electrical characteristics Table 5. LD1117Axx Electrical characteristics of LD1117A#18 (refer to the test circuits, TJ = 0 to 125 C, CO = 10 F, CI = 10 F unless otherwise specified). Parameter Output voltage Output voltage Line regulation Load regulation Temperature stability Long term stability Operating input voltage Quiescent current Output current Output noise voltage Supply voltage rejection 1000 hrs, TJ = 125C IO = 100mA VI 8V, IO = 0mA VI - VO = 5V, TJ = 25C B =10Hz to 10kHz, TJ = 25C IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP IO = 100mA 60 1000 100 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W V 5 Test conditions VI = 3.8V, IO = 10mA, TJ = 25C IO = 0 to 1A, VI = 3.3 to 8V VI = 3.3 to 8V, IO = 0mA VI = 3.3V, IO = 0 to 1A Min. 1.764 1.728 1 1 0.5 0.3 10 10 Typ. 1.8 Max. 1.836 1.872 6 10 Unit V V mV mV % % V mA mA V dB Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Dropout voltage IO = 500mA IO = 1A VO(pwr) Thermal regulation Ta = 25C, 30ms Pulse 8/29 LD1117Axx Table 6. Electrical characteristics Electrical characteristics of LD1117A#25 (refer to the test circuits, TJ = 0 to 125 C, CO = 10 F, CI = 10 F unless otherwise specified). Parameter Test conditions VI = 4.5V, IO = 10mA, TJ = 25C IO = 0 to 1A, VI = 3.9 to 8V VI = 3.9 to 8V, IO = 0mA VI = 3.9V, IO = 0 to 1A Min. 2.45 2.4 1 1 0.5 1000 hrs, TJ = 125C IO = 100mA VI 10V, IO = 0mA VI - VO = 5V, TJ = 25C B =10Hz to 10kHz, TJ = 25C IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP IO = 100mA 60 1000 5 1200 100 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W V 0.3 10 10 Typ. 2.5 Max. 2.55 2.6 6 10 Unit V V mV mV % % V mA mA V dB Symbol VO VO VO VO VO VO VI Id IO eN SVR Output voltage Output voltage Line regulation Load regulation Temperature stability Long term stability Operating input voltage Quiescent current Output current Output noise voltage Supply voltage rejection VD Dropout voltage IO = 500mA IO = 1A VO(pwr) Thermal regulation Ta = 25C, 30ms Pulse 9/29 Electrical characteristics Table 7. LD1117Axx Electrical characteristics of LD1117A#33 (refer to the test circuits, TJ = 0 to 125 C, CO = 10 F, CI = 10 F unless otherwise specified). Parameter Output voltage Output voltage Line regulation Load regulation Temperature stability Long term stability Operating input voltage Quiescent current Output current Output noise voltage Supply voltage rejection 1000 hrs, TJ = 125C IO = 100mA VI 10V, IO = 0mA VI - VO = 5V, TJ = 25C B =10Hz to 10kHz, TJ = 25C IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP IO = 100mA 60 1000 5 1200 100 75 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W V Test conditions VI = 5.3V, IO = 10mA, TJ = 25C IO = 0 to 1A, VI = 4.75 to 10V VI = 4.75 to 8V, IO = 0mA VI = 4.75V, IO = 0 to 1A Min. 3.234 3.168 1 1 0.5 0.3 10 10 Typ. 3.3 Max. 3.366 3.432 6 10 Unit V V mV mV % % V mA mA V dB Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Dropout voltage IO = 500mA IO = 1A VO(pwr) Thermal regulation Ta = 25C, 30ms Pulse 10/29 LD1117Axx Table 8. Electrical characteristics Electrical characteristics of LD1117A (Adjustable) (refer to the test circuits, TJ = 0 to 125 C, CO = 10 F, CI = 10 F unless otherwise specified). Parameter Test conditions VI = 5.3V, IO = 10mA, TJ = 25C IO = 0 to 1A, VI = 2.75 to 10V VI = 2.75 to 8V, IO = 0mA VI = 2.75V, IO = 0 to 1A Min. 1.225 1.2 1 1 0.5 1000 hrs, TJ = 125C IO = 100mA Vin 10 V Vin - VO = 1.4 to 10 V, IO = 10mA to 1A Vin = 10 V VI - VO = 5V, TJ = 25C B =10Hz to 10kHz, TJ = 25C IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP IO = 100mA 60 1000 60 1 2 1200 100 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W V 0.3 10 120 5 5 Typ. 1.25 Max. 1.275 1.3 6 10 Unit V V mV mV % % V A A mA mA V dB Symbol VO VO VO VO VO VO VI Iadj Iadj IO(min) IO eN SVR Output voltage Output voltage Line regulation Load regulation Temperature stability Long term stability Operating input voltage Adjustment pin current Adjustment pin current change Minimum load current Output current Output noise voltage Supply voltage rejection VD Dropout voltage IO = 500mA IO = 1A VO(pwr) Thermal regulation Ta = 25C, 30ms Pulse 11/29 Typical application LD1117Axx 6 Figure 4. Typical application Negative supply Figure 5. Active terminator for SCSI-2 bus Figure 6. Circuit for increasing output voltage 12/29 LD1117Axx Typical application Figure 7. Voltage regulator with reference Figure 8. Battery backed-up regulated supply 13/29 Typical application Figure 9. Post-regulated dual supply LD1117Axx 14/29 LD1117Axx LD1117A adjustable: application note 7 LD1117A adjustable: application note The LD1117A adjustable has a thermal stabilized 1.25 0.012 V reference voltage between the OUT and ADJ pins. IADJ is 60 A typ. (120 A max.) and IADJ is 1 A typ. (5 A max.). R1 is normally fixed to 120 . From Figure 7 we obtain: VOUT = VREF + R2 (IADJ +IR1) = VREF + R2 (IADJ +VREF /R1) = VREF (1 + R2 / R1) + R2 x IADJ. In normal application R2 value is in the range of few k, so the R2 x IADJ product could not be considered in the VOUT calculation; then the above expression becomes: VOUT = VREF (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 10 F electrolytic capacitor placed in parallel to the R2 resistor (see Figure 10). Figure 10. Adjustable output voltage application Figure 11. Adjustable output voltage application with improved ripple rejection 15/29 Package mechanical data LD1117Axx 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK(R) packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 16/29 LD1117Axx Package mechanical data SOT-223 mechanical data mm. Dim. Min. A A1 B B1 c D e e1 E H V 3.3 6.7 0.02 0.6 2.9 0.24 6.3 0.7 3 0.26 6.5 2.3 4.6 3.5 7 3.7 7.3 10 129.9 263.8 Typ. Max. 1.8 0.1 0.85 3.15 0.35 6.7 0.8 23.6 114.2 9.4 248.0 27.6 118.1 10.2 255.9 90.6 181.1 137.8 275.7 145.7 287.5 10 Min. Typ. Max. 70.9 3.9 33.5 124.0 13.8 263.8 mils. 0046067/H 17/29 Package mechanical data LD1117Axx TO-220 mechanical data Dim. A C D D1 E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 DIA. 13.0 2.65 15.25 6.2 3.5 3.75 0.49 0.61 1.14 1.14 4.95 2.4 10.0 16.4 14.0 2.95 15.75 6.6 3.93 3.85 0.511 0.104 0.600 0.244 0.137 0.147 mm. Min. 4.40 1.23 2.40 1.27 0.70 0.88 1.70 1.70 5.15 2.7 10.40 0.019 0.024 0.044 0.044 0.194 0.094 0.393 0.645 0.551 0.116 0.620 0.260 0.154 0.151 Typ. Max. 4.60 1.32 2.72 Min. 0.173 0.048 0.094 0.050 0.027 0.034 0.067 0.067 0.203 0.106 0.409 inch. Typ. Max. 0.181 0.051 0.107 P011C 18/29 LD1117Axx Package mechanical data Figure 12. Drawing dimension DPAK/A (type STD-ST) 7106164/E 19/29 Package mechanical data LD1117Axx Figure 13. Drawing dimension DPAK/A (type WOOSEOK-Subcon.) 7106164/E 20/29 LD1117Axx Package mechanical data Table 9. DPAK/A mechanical data Type STD-ST Type WOOSEOK-Subcon. mm. Max. 4.60 0.23 0.93 1.30 1.70 0.60 1.36 9.35 1.17 0.45 1.25 9 7.50 10.40 9.80 7.50 2.54 4.88 15 2.49 2.29 1.27 0.4 0 8 0 5.28 15.85 2.69 2.79 1.40 15 2.20 1.79 1 0.30 3 2.54 5.08 15.30 15.60 2.60 2.79 1.40 10.20 0.50 1.30 9.20 1.37 0.60 1.40 9.40 Min. 4.30 0 0.70 Typ. Max. 4.70 0.20 0.90 Dim. Min. A A1 b b1 b2 c c2 D D1 E E1 e e1 H J1 L L1 R V2 4.40 0.03 0.70 0.80 1.14 0.45 1.23 8.95 7.50 10 8.50 mm. Typ. Note: The DPAK/A package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint. 21/29 Package mechanical data LD1117Axx Figure 14. DPAK/A footprint recommended data Table 10. Footprint data Values Dim. A B C D E F G mm. 12.20 9.75 16.90 3.50 1.60 2.54 5.08 inch. 0.480 0.384 0.665 0.138 0.063 0.100 0.200 22/29 LD1117Axx Package mechanical data DPAK mechanical data mm. Dim. Min. A A1 A2 B b4 C C2 D D1 E E1 e e1 H L (L1) L2 L4 R V2 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 5.1 6.4 4.7 2.28 4.4 9.35 1 2.8 0.8 0.6 0.2 0 8 0 1 0.023 0.008 8 4.6 10.1 0.173 0.368 0.039 0.110 0.031 0.039 6.6 0.252 0.185 0.090 0.181 0.397 Typ. Max. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 Min. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.200 0.260 Typ. Max. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 inch. 0068772-F 23/29 Package mechanical data LD1117Axx Tape & reel SOT223 mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.73 7.32 1.78 3.9 7.9 4.0 8.0 6.83 7.42 12.8 20.2 60 14.4 6.93 7.52 2 4.1 8.1 0.265 0.288 0.070 0.153 0.311 0.157 0.315 0.269 0.292 13.0 Typ. Max. 330 13.2 0.504 0.795 2.362 0.567 0.273 0.296 0.078 0.161 0.319 0.512 Min. Typ. Max. 12.992 0.519 inch. 24/29 LD1117Axx Package mechanical data Tape & reel DPAK-PPAK mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.80 10.40 2.55 3.9 7.9 6.90 10.50 2.65 4.0 8.0 12.8 20.2 60 22.4 7.00 10.60 2.75 4.1 8.1 0.268 0.409 0.100 0.153 0.311 0.272 0.413 0.104 0.157 0.315 13.0 Typ. Max. 330 13.2 0.504 0.795 2.362 0.882 0.2.76 0.417 0.105 0.161 0.319 0.512 Min. Typ. Max. 12.992 0.519 inch. 25/29 Package mechanical data LD1117Axx Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data mm. Dim. Min. A C D N T Ao Bo Ko Po P 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 12.8 20.2 60 14.4 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 Typ. Max. 180 13.2 0.504 0.795 2.362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 Min. Typ. Max. 7.086 0.519 inch. 26/29 LD1117Axx Order codes 9 Table 11. Order codes Order codes Packages SOT-223 LD1117AS12TR LD1117AS18TR LD1117AS25TR LD1117AS33TR LD1117ASTR DPAK LD1117ADT12TR LD1117ADT18TR LD1117ADT25TR LD1117ADT33TR LD1117ADT-TR LD1117AD2MTR LD1117AV18 LD1117AV25 LD1117AV33 LD1117AV DPAK/A Output voltage TO-220 1.2 V 1.8 V 2.5 V 3.3 V Adjustable from 1.25 to 15 V 27/29 Revision history LD1117Axx 10 Table 12. Date Revision history Document revision history Revision 11 12 13 14 15 16 17 18 19 20 Add new part number #12. Mistake VO max. - Table 4. Add new package - DPAK/A. The DPAK mechanical data updated. Add new package - DPAK/A (B Type). Change value VIN on Table 2. D2PAK/A mechanical data updated and add footprint data. Add IADJ and IADJ values on Table 8. Add IO(min) value on Table 8. Modified: Table 11 on page 27. Changes 29-Sep-2004 12-Oct-2004 21-Apr-2005 05-Jul-2005 10-Feb-2006 20-Dec-2006 19-Jan-2007 28-May-2007 07-Jun-2007 15-Apr-2008 28/29 LD1117Axx Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER'S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. (c) 2008 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 29/29 |
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