LD1117A series Low drop fixed and adjustable positive voltage regulators Features ■ Low dropout voltage (1.15V typ. @ IOUT = 1A, 25°C) ■ Very low quiescent current (5 mA typ. @ 25°C) ■ Output current up to 1A ■ Fixed output voltage of: 1.2V, 1.8V, 2.5V, 2.85V, 3.3V, 5.0V ■ Adjustable version availability (Vrel = 1.25V) ■ Internal current and thermal limit ■ Only 10 µF for stability ■ Available in ± 2% (at 25°C) and 4% in full temperature range ■ High supply voltage rejection: – 80dB typ. at 25°C) ■ Temperature range: 0°C to 125°C SOT-223 TO-220 DPAK Description The LD1117A is a LOW DROP Voltage Regulator able to provide up to 1A of Output Current, available even in adjustable version (Vref=1.25V). D2PAK/A Concerning fixed versions, are offered the following Output Voltages: 1.2V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V. The 2.85V type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, DPAK, D2PAK/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 10µF minimum capacitor is needed for stability. Only chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2% at 25°C. Block diagram January 2007 Rev. 17 1/27 www.st.com 27 LD1117A series Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Schematic application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 LD1117A Adjustable: Application note . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8 Order code 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2/27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 LD1117A series Pin configuration 1 Pin configuration Figure 1. Pin connections (top view) SOT-223 TO-220 Note: DPAK D2PAK/A The TAB is connected to the VOUT. 3/27 Maximum ratings LD1117A series 2 Maximum ratings Table 1. Absolute maximum ratings Symbol Parameter Value Unit VIN DC Input Voltage 15 V PTOT Power Dissipation 12 W TSTG Storage Temperature Range -40 to +150 °C TOP Operating Junction Temperature Range 0 to +125 °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. Table 2. Thermal Data Symbol Parameter RthJC Thermal Resistance Junction-case RthJA Thermal Resistance Junction-ambient 4/27 SOT-223 D2PAK/A DPAK TO-220 Unit 15 3 8 3 °C/W 50 °C/W LD1117A series 3 Schematic application Figure 2. Application circuit (for other fixed output voltages) Schematic application 5/27 Electrical characteristics LD1117A series 4 Electrical characteristics Table 3. Electrical characteristics of LD1117A#12 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, CI = 10 µF, R = 120 Ω between OUTGND, unless otherwise specified). Symbol Parameter Test conditions Min. Typ. Max. Unit VO Output voltage VI = 5.3V, IO = 10mA, TJ = 25°C 1.176 1.2 1.224 V VO Output voltage IO = 0 to 1A, VI = 2.75 to 10V 1.152 1.2 1.248 V ∆VO Line regulation VI = 2.75 to 8V, IO = 0mA 1 6 mV ∆VO Load regulation VI = 2.75V, IO = 0 to 1A 1 10 mV ∆VO Temperature stability ∆VO Long term stability 1000 hrs, TJ = 125°C VI Operating input voltage IO = 100mA Id Quiescent current VI ≤8V, IO = 0mA IO Output current VI - VO = 5V, TJ = 25°C eN Output noise voltage B =10Hz to 10KHz, TJ = 25°C Supply voltage rejection IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP SVR VD Dropout voltage ∆VO(pwr) Thermal regulation 6/27 0.5 % 0.3 % 5 1000 60 10 V 10 mA 1200 mA 100 µV 80 dB IO = 100mA 1 1.10 IO = 500mA 1.05 1.15 IO = 1A 1.15 1.30 Ta = 25°C, 30ms Pulse 0.08 0.2 V %/W LD1117A series Table 4. Symbol Electrical characteristics Electrical characteristics of LD1117A#18 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, CI = 10 µF unless otherwise specified). Parameter Test conditions Min. Typ. Max. Unit 1.8 1.836 V 1.872 V VO Output voltage VI = 3.8V, IO = 10mA, TJ = 25°C 1.764 VO Output voltage IO = 0 to 1A, VI = 3.3 to 8V 1.728 ∆VO Line regulation VI = 3.3 to 8V, IO = 0mA 1 6 mV ∆VO Load regulation VI = 3.3V, IO = 0 to 1A 1 10 mV ∆VO Temperature stability ∆VO Long term stability 1000 hrs, TJ = 125°C VI Operating input voltage IO = 100mA Id Quiescent current VI ≤8V, IO = 0mA IO Output current VI - VO = 5V, TJ = 25°C eN Output noise voltage B =10Hz to 10KHz, TJ = 25°C Supply voltage rejection IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP SVR VD Dropout voltage ∆VO(pwr) Thermal regulation Table 5. Symbol 0.5 % 0.3 % 5 10 V 10 mA 1000 60 mA 100 µV 80 dB IO = 100mA 1 1.10 IO = 500mA 1.05 1.15 IO = 1A 1.15 1.30 Ta = 25°C, 30ms Pulse 0.08 0.2 V %/W Electrical characteristics of LD1117A#25 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, CI = 10 µF unless otherwise specified). Parameter Test conditions Min. Typ. Max. Unit 2.5 2.55 V 2.6 V VO Output voltage VI = 4.5V, IO = 10mA, TJ = 25°C 2.45 VO Output voltage IO = 0 to 1A, VI = 3.9 to 8V 2.4 ∆VO Line regulation VI = 3.9 to 8V, IO = 0mA 1 6 mV ∆VO Load regulation VI = 3.9V, IO = 0 to 1A 1 10 mV ∆VO Temperature stability ∆VO Long term stability 1000 hrs, TJ = 125°C VI Operating input voltage IO = 100mA Id Quiescent current VI ≤10V, IO = 0mA IO Output current VI - VO = 5V, TJ = 25°C eN Output noise voltage B =10Hz to 10KHz, TJ = 25°C Supply voltage rejection IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP SVR VD Dropout voltage ∆VO(pwr) Thermal regulation 0.5 % 0.3 % 5 1000 60 10 V 10 mA 1200 mA 100 µV 80 dB IO = 100mA 1 1.10 IO = 500mA 1.05 1.15 IO = 1A 1.15 1.30 Ta = 25°C, 30ms Pulse 0.08 0.2 V %/W 7/27 Electrical characteristics Table 6. Symbol LD1117A series Electrical characteristics of LD1117A#28 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, CI = 10 µF unless otherwise specified). Parameter Test conditions Min. Typ. Max. Unit 2.85 2.907 V 2.964 V VO Output voltage VI = 4.85V, IO = 10mA, TJ = 25°C 2.793 VO Output voltage IO = 0 to 1A, VI = 4.25 to 10V 2.736 ∆VO Line regulation VI = 4.25 to 8V, IO = 0mA 1 6 mV ∆VO Load regulation VI = 4.25V, IO = 0 to 1A 1 10 mV ∆VO Temperature stability ∆VO Long term stability 1000 hrs, TJ = 125°C VI Operating input voltage IO = 100mA Id Quiescent current VI ≤10V, IO = 0mA IO Output current VI - VO = 5V, TJ = 25°C eN Output noise voltage B =10Hz to 10KHz, TJ = 25°C Supply voltage rejection IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP SVR VD Dropout voltage ∆VO(pwr) Thermal regulation Table 7. Symbol 0.5 % 0.3 % 4.5 1000 60 10 V 10 mA 1200 mA 100 µV 75 dB IO = 100mA 1 1.10 IO = 500mA 1.05 1.15 IO = 1A 1.15 1.30 Ta = 25°C, 30ms Pulse 0.08 0.2 V %/W Electrical characteristics of LD1117A#33 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, CI = 10 µF unless otherwise specified). Parameter Test conditions Min. Typ. Max. Unit 3.3 3.366 V 3.432 V VO Output voltage VI = 5.3V, IO = 10mA, TJ = 25°C 3.234 VO Output voltage IO = 0 to 1A, VI = 4.75 to 10V 3.168 ∆VO Line regulation VI = 4.75 to 8V, IO = 0mA 1 6 mV ∆VO Load regulation VI = 4.75V, IO = 0 to 1A 1 10 mV ∆VO Temperature stability ∆VO Long term stability 1000 hrs, TJ = 125°C VI Operating input voltage IO = 100mA Id Quiescent current VI ≤10V, IO = 0mA IO Output current VI - VO = 5V, TJ = 25°C eN Output noise voltage B =10Hz to 10KHz, TJ = 25°C Supply voltage rejection IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP SVR VD Dropout voltage ∆VO(pwr) Thermal regulation 8/27 0.5 % 0.3 % 5 1000 60 10 V 10 mA 1200 mA 100 µV 75 dB IO = 100mA 1 1.10 IO = 500mA 1.05 1.15 IO = 1A 1.15 1.30 Ta = 25°C, 30ms Pulse 0.08 0.2 V %/W LD1117A series Table 8. Symbol Electrical characteristics Electrical characteristics of LD1117#50 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, CI = 10 µF unless otherwise specified). Parameter Test conditions Min. Typ. Max. Unit 5 5.1 V 5.2 V VO Output voltage VI = 7V, IO = 10mA, TJ = 25°C 4.9 VO Output voltage IO = 0 to 1A, VI = 6.4 to 10V 4.8 ∆VO Line regulation VI = 6.4 to 8V, IO = 0mA 1 6 mV ∆VO Load regulation VI = 6.4V, IO = 0 to 1A 1 10 mV ∆VO Temperature stability ∆VO Long term stability 1000 hrs, TJ = 125°C VI Operating input voltage IO = 100mA Id Quiescent current VI ≤10V, IO = 0mA IO Output current VI - VO = 5V, TJ = 25°C eN Output noise voltage B =10Hz to 10KHz, TJ = 25°C Supply voltage rejection IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP SVR VD Dropout voltage ∆VO(pwr) Thermal regulation Table 9. Symbol 0.5 % 0.3 % 5 1000 60 10 V 10 mA 1200 mA 100 µV 80 dB IO = 100mA 1 1.10 IO = 500mA 1.05 1.15 IO = 1A 1.15 1.30 Ta = 25°C, 30ms Pulse 0.08 0.2 V %/W Electrical characteristics of LD1117A (Adjustable) (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, CI = 10 µF unless otherwise specified). Parameter Test conditions Min. Typ. Max. Unit 1.225 1.25 1.275 V 1.3 V VO Output voltage VI = 5.3V, IO = 10mA, TJ = 25°C VO Output voltage IO = 0 to 1A, VI = 2.75 to 10V ∆VO Line regulation VI = 2.75 to 8V, IO = 0mA 1 6 mV ∆VO Load regulation VI = 2.75V, IO = 0 to 1A 1 10 mV ∆VO Temperature stability ∆VO Long term stability 1000 hrs, TJ = 125°C VI Operating input voltage IO = 100mA Id Quiescent current VI ≤8V, IO = 0mA IO Output current VI - VO = 5V, TJ = 25°C eN Output noise voltage B =10Hz to 10KHz, TJ = 25°C Supply voltage rejection IO = 40mA, f = 120Hz VI - VO = 3V, Vripple = 1VPP SVR VD Dropout voltage ∆VO(pwr) Thermal regulation 1.2 0.5 % 0.3 % 5 1000 60 10 V 10 mA 1200 mA 100 µV 80 dB IO = 100mA 1 1.10 IO = 500mA 1.05 1.15 IO = 1A 1.15 1.30 Ta = 25°C, 30ms Pulse 0.08 0.2 V %/W 9/27 Typical application 5 Typical application Figure 3. Negative supply Figure 4. Active terminator for SCSI-2 BUS Figure 5. Circuit for increasing output voltage 10/27 LD1117A series LD1117A series Figure 6. Voltage Regulator With Reference Figure 7. Battery backed-up regulated supply Typical application 11/27 Typical application Figure 8. 12/27 Post-regulated dual supply LD1117A series LD1117A series 6 LD1117A Adjustable: Application note LD1117A Adjustable: Application note The LD1117 Adjustable has a thermal stabilized 1.25±0.012V reference voltage between the OUT and ADJ pins. IADJ is 60µA typ. (120µA max.) and ∆IADJ is 1µA typ. (5µA max.). R1 is normally fixed to 120Ω. From Figure 6. 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 kΩ, 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 10µF electrolytic capacitor placed in parallel to the R2 resistor (see Figure 9.). Figure 9. Adjustable output voltage application Figure 10. Adjustable output voltage application with improved ripple rejection 13/27 Package mechanical data 7 LD1117A series Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® 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. 14/27 LD1117A series Package mechanical data SOT-223 MECHANICAL DATA mm. mils DIM. MIN. TYP A MAX. MIN. TYP. 1.8 A1 0.02 B 0.6 B1 MAX. 70.9 0.1 0.8 3.9 0.7 0.85 23.6 27.6 33.5 2.9 3 3.15 114.2 118.1 124.0 c 0.24 0.26 0.35 9.4 10.2 13.8 D 6.3 6.5 6.7 248.0 255.9 263.8 e 2.3 90.6 e1 4.6 181.1 E 3.3 3.5 3.7 129.9 137.8 145.7 H 6.7 7 7.3 263.8 275.7 287.5 V 10° 10° 0046067/H 15/27 Package mechanical data LD1117A series TO-220 MECHANICAL DATA DIM. mm. MIN. MAX. MIN. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 D1 TYP inch 1.27 TYP. MAX. 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 L2 16.4 0.409 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.2 6.6 0.244 0.260 L9 3.5 3.93 0.137 0.154 DIA. 3.75 3.85 0.147 0.151 P011C 16/27 LD1117A series Package mechanical data Figure 11. DRAWING DIMENSION D2PAK/A (TYPE STD-ST) 7106164/E 17/27 Package mechanical data LD1117A series Figure 12. DRAWING DIMENSION D2PAK/A (TYPE WOOSEOK-SUBCON.) 7106164/E 18/27 LD1117A series Table 10. Package mechanical data D2PAK/A MECHANICAL DATA DIM. MIN. TYPE WOOSEOK-SUBCON. mm. mm. TYP. MAX. MIN. TYP. MAX. A 4.40 4.60 4.30 4.70 A1 0.03 0.23 0 0.20 b 0.70 0.93 0.70 0.90 b1 0.80 1.30 b2 1.14 1.70 1.17 1.37 c 0.45 0.60 0.45 0.50 0.60 c2 1.23 1.36 1.25 1.30 1.40 D 8.95 9.35 9 9.20 9.40 D1 7.50 E 10 E1 8.50 e 7.50 10.40 9.80 10.20 7.50 2.54 2.54 e1 4.88 5.28 H 15 15.85 15 J1 2.49 2.69 2.20 2.60 L 2.29 2.79 1.79 2.79 L1 1.27 1.40 1 1.40 R V2 Note: TYPE STD-ST 5.08 0.4 0° 15.30 15.60 0.30 8° 0° 3° The D2PAK/A package coming from the subcontractor Wooseok is fully compatible with the ST's package suggested footprint. 19/27 Package mechanical data LD1117A series Figure 13. D2PAK/A FOOTPRINT RECOMMENDED DATA Table 11. FOOTPRINT DATA VALUES 20/27 mm. inch. A 12.20 0.480 B 9.75 0.384 C 16.90 0.665 D 3.50 0.138 E 1.60 0.063 F 2.54 0.100 G 5.08 0.200 LD1117A series Package mechanical data DPAK MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A A1 A2 B b4 2.2 0.9 0.03 0.64 5.2 2.4 1.1 0.23 0.9 5.4 0.086 0.035 0.001 0.025 0.204 0.094 0.043 0.009 0.035 0.212 C C2 D D1 E E1 0.45 0.48 6 0.6 0.6 6.2 0.017 0.019 0.236 0.023 0.023 0.244 6.6 0.252 e e1 H L (L1) L2 L4 R V2 5.1 6.4 0.200 0.185 2.28 0.090 4.4 9.35 1 4.6 10.1 0.173 0.368 0.039 2.8 0.8 0.6 0.181 0.397 0.110 0.031 1 0.023 8° 0° 0.2 0° 0.260 4.7 0.039 0.008 8° 0068772-F 21/27 Package mechanical data LD1117A series Tape & Reel SOT223 MECHANICAL DATA mm. inch DIM. MIN. TYP A MIN. TYP. 330 13.0 13.2 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 22/27 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 6.73 6.83 6.93 0.265 0.269 0.273 Bo 7.32 7.42 7.52 0.288 0.292 0.296 Ko 1.78 2 0.070 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.319 0.078 LD1117A series Package mechanical data Tape & Reel DPAK-PPAK MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 330 13.0 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 22.4 0.519 0.882 Ao 6.80 6.90 7.00 0.268 0.272 0.2.76 Bo 10.40 10.50 10.60 0.409 0.413 0.417 Ko 2.55 2.65 2.75 0.100 0.104 0.105 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.319 23/27 Package mechanical data LD1117A series Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. inch DIM. MIN. TYP A MIN. TYP. 180 13.0 13.2 MAX. 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 24/27 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.476 LD1117A series Order code 8 Order code Table 12. Order code Part numbers TO-220 OUTPUT VOLTAGE LD1117ADT12TR(1) LD1117AV12(1) 1.2 V LD1117AS18TR LD1117ADT18TR LD1117AV18 1.8 V LD1117AS25TR LD1117ADT25TR LD1117AV25 2.5 V LD1117AS28TR(1) LD1117ADT28TR(1) LD1117AV28(1) 2.85 V LD1117AS33TR LD1117ADT33TR LD1117AV33 3.3 V LD1117AS50TR(1) LD1117ADT50TR(1) LD1117AV50(1) 5V LD1117ASTR LD1117ADT-TR LD1117AV ADJUSTABLE FROM 1.25 to 15V SOT-223 DPAK LD1117AS12TR D2PAK/A LD1117AD2MTR 1. Available on request. 25/27 Revision history LD1117A series 9 Revision history Table 13. Document revision history Date Revision 29-Sep-2004 11 Add new Part Number #12. 12-Oct-2004 12 Mistake VO max. - Table 4. 21-Apr-2005 13 Add new package - D2PAK/A. 05-Jul-2005 14 The DPAK Mechanical Data has been updated. 10-Feb-2006 15 Add new package - D2PAK/A (B Type). 20-Dec-2006 16 Change value VIN on Table 1. and the document has been reformatted. 19-Jan-2007 17 D2PAK/A mechanical data has been updated and add footprint data. 26/27 Changes LD1117A series 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. 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