LDL1117S25R

LDL1117 Datasheet 1.2 A high PSRR low-dropout linear voltage regulator Features • • • SOT223 • • • • • • Input voltage from 2.5 V to 18 V 20 V AMR Available on fixed output voltages: 1.2 V (1.185 V), 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V, 5.0 V (other options are available on request) Guaranteed output current 1.2 A Typical dropout 350 mV @ 1.2 A Internal thermal, current and power limitation High PSRR 87 dB @ 120 Hz Operating temperature range: -40 °C to 125°C Package SOT223 Applications • • • • • Consumer Industrial SMPS Motherboard P.O.L. DC-DC post-regulation Description Maturity status link LDL1117 The LDL1117 provides 1.2 A of maximum current with an input voltage range from 2.5 V to 18 V, and a typical dropout voltage of 350 mV @ 1.2 A. The high power supply rejection ratio of 87 dB at 120 Hz, rolling down to more than 40 dB at 100 kHz, makes the LDL1117 suitable for direct regulations in SMPS and secondary linear regulations in DC-DC converters. This device includes current limit, SOA and thermal protections. DS12022 - Rev 7 - January 2021 For further information contact your local STMicroelectronics sales office. www.st.com LDL1117 Diagram 1 Diagram Figure 1. Block diagram DS12022 - Rev 7 page 2/23 LDL1117 Pin configuration 2 Pin configuration Figure 2. Pin connection (top view) Table 1. Pin description Note: DS12022 - Rev 7 Pin name Pin number Description GND 1 Ground VOUT 2 Output voltage VIN 3 Input voltage The tab is connected to VOUT. page 3/23 LDL1117 Typical application 3 Typical application Figure 3. Typical application diagram LDL1117 DS12022 - Rev 7 page 4/23 LDL1117 Maximum ratings 4 Maximum ratings Table 2. Absolute maximum ratings Symbol VIN Input supply voltage Value Unit -0.3 to 20 V VOUT Output voltage -0.3 to VIN + 0.3 V IOUT Output current Internally limited A Power dissipation Internally limited W PD TJ-OP Operating junction temperature - 40 to 125 °C TJ-MAX Maximum junction temperature 150 °C - 55 to 150 °C TSTG Note: Parameter Storage temperature Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Table 3. Thermal data Symbol DS12022 - Rev 7 Parameter Value θJ-C Thermal resistance junction-to-case 15 θJ-A Thermal resistance junction-to-ambient 120 Unit °C/W page 5/23 LDL1117 Electrical characteristics 5 Electrical characteristics TJ = 25 °C, VIN = VOUT + 1 V or 2.6 V, whichever is greater; CIN = 1 μF; COUT = 4.7 μF; IOUT = 10 mA. Table 4. Electrical characteristics Symbol VIN VUVLO Parameter Operating input voltage Min. 2.6 2.3 Hysteresis 200 VOUT accuracy ∆VOUT Line regulation ∆VOUT Load regulation VDROP Dropout voltage (2) Output noise voltage ISC Output current TSHDN V 2.4 V mV % IOUT = 10 mA, -40 °C < TJ < 125°C -3 +3 % 0.002 0.02 %/V 5 15 mV 350 600 mV VOUT + 1 V (1) ≤ VIN ≤ 18 V, IOUT = 10 mA -40 °C < TJ< 125 °C IOUT = 10 mA to 1.2 A, - 40 °C < TJ < 125 °C IOUT = 1.2 A, VOUT > 2.5 V - 40°C < TJ < 125 °C 10 Hz to 100 kHz, IOUT = 100 mA µVRMS/ VOUT 60 87 VIN = VOUT(NOM) +1 V ± VRIPPLE 80 VRIPPLE = 0.5 V, f = 1 kHz dB 65 VRIPPLE = 0.5 V, f = 100 kHz Quiescent current 18 +2 VIN= VOUT(NOM) +1 V ± VRIPPLE IQ Unit -2 VRIPPLE = 0.5 V, f = 120 Hz Supply voltage rejection Max. IOUT = 10 mA, TJ = 25 °C VIN = VOUT(NOM) +1 V ± VRIPPLE SVR Typ. Turn-on threshold VOUT eN Test conditions IOUT = 0 mA to 1.2 A, -40 °C < TJ < 125 °C 250 1.5 2 Thermal shutdown 175 Hysteresis 25 500 µA A °C 1. VIN = VOUT + 1 V or 2.6 V, whichever is greater. 2. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value; this specification does not apply for nominal output voltages below 2.5 V. DS12022 - Rev 7 page 6/23 LDL1117 Application information 6 Application information 6.1 Thermal and short-circuit protections The LDL1117 is self-protected from short-circuit conditions and overtemperature. When the output load is higher than the one supported by the device, the output current rises until the limit of typically 2 A is reached. The current limit value is dependent of the dissipated power, thanks to an additional SOA protection, so that the maximum power is limited. The peak current available for a defined drop voltage (VIN-VOUT) is shown in Section 7 . The thermal protection occurs when the junction temperature reaches typically 175 °C. The IC enters the shutdown status. As soon as the junction temperature falls again below 150 °C (typ.) the device starts working again. In order to calculate the maximum power that the device can dissipate, keeping the junction temperature below TJ-OP, the following formula is used: PDMAX = 125 − TAMB / RTHJ − A (1) PDMAX should be also derated according to the maximum current allowed by the SOA protection. 6.2 Input and output capacitor selection The LDL1117 requires external capacitors to assure the regulator control loop stability. Any good quality ceramic capacitor can be used but, the X5R and the X7R are suggested since they guarantee a very stable combination of capacitance and ESR over the temperature range. The input/output capacitors should be placed as close as possible to the relative pins. The LDL1117 requires an input capacitor with a minimum value of 1 μF. The device is also equipped with a differential thermal protection that avoid damage in case of fast thermal gradients inside the chip. When the differential thermal protection is activated both channel and the LDO are switched off. This protection works in auto-retry mode, the device restarts automatically when the thermal conditions go back into the normal operating region. This capacitor must be placed as close as possible to the input pin of the device and returned to a clean analog ground. The control loop of the LDL1117 is designed to work with an output ceramic capacitor. Other type of capacitors may be used, as long as they meet the requirements of minimum capacitance and equivalent series resistance (ESR), as shown in Figure 20 and Figure 21. To assure stability, the output capacitor must maintain its ESR and capacitance in the stable region, over the full operating temperature range. The suggested combination of 1 μF input and 4.7 μF output capacitors offers a good compromise among the stability of the regulator, optimum transient response and total PCB area occupation. DS12022 - Rev 7 page 7/23 LDL1117 Typical characteristics 7 Typical characteristics The following plots are referred to the typical application circuit and, unless otherwise noted, at TA = 25 °C. Figure 4. Output voltage vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, no load) Figure 5. Output voltage vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, 1200 mA) Figure 6. Output voltage vs. temperature (VIN = 6 V, VOUT = 5 V, no load) Figure 7. Output voltage vs. temperature (VIN = 6 V, VOUT = 5 V, 1200 mA) DS12022 - Rev 7 page 8/23 LDL1117 Typical characteristics Figure 8. Line regulation vs. temperature (VIN = 6 to 18 V, VOUT = 5 V, IOUT = 10 mA) Figure 9. Line regulation vs. temperature (VIN = 2.5 to 18 V, VOUT = 1.2 V, IOUT = 10 mA) 0.03 Line Regulation [% / V] 0.025 0.02 0.015 0.01 0.005 0 -40 -25 0 25 55 85 125 Temperature [°C] Figure 10. Load regulation vs. temperature (VIN = 6 V, VOUT = 5 V, IOUT = 10 to 1200 mA) DS12022 - Rev 7 Figure 11. Load regulation vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, IOUT = 10 to 1200 mA) page 9/23 LDL1117 Typical characteristics Figure 13. Quiescent current vs. temperature (no load) Figure 14. Quiescent current vs. temperature (600 mA) Figure 15. Quiescent current vs. temperature (1.2 A) Dropout Voltage [mV] Figure 12. Dropout voltage vs. temperature DS12022 - Rev 7 page 10/23 LDL1117 Typical characteristics Figure 16. Short-circuit current vs. dropout voltage (VOUT = 5 V) Figure 17. Short-circuit current vs. dropout voltage (VOUT = 1.2 V) Figure 18. SVR vs. frequency Figure 19. Output noise spectral density (VO = 1.2 V) DS12022 - Rev 7 page 11/23 LDL1117 Typical characteristics Figure 20. Stability plan (VOUT = 5 V) Figure 21. Stability plan (VOUT = 1.2 V) Figure 22. Turn-on time (VOUT = 5 V) Figure 23. Turn-on time (VOUT = 1.2 V) Figure 24. Line transient (VOUT = 5 V) Figure 25. Line transient (VOUT = 1.2 V) DS12022 - Rev 7 page 12/23 LDL1117 Typical characteristics Figure 26. Load transient (VOUT = 5 V) DS12022 - Rev 7 Figure 27. Load transient (VOUT = 1.2 V) page 13/23 LDL1117 Package information 8 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark. 8.1 SOT223 package information Figure 28. SOT223 package outline DS12022 - Rev 7 page 14/23 LDL1117 SOT223 package information Table 5. SOT223 mechanical data Dim. mm Min. Typ. A 1.8 A1 0.02 0.1 B 0.6 0.7 0.85 B1 2.9 3 3.15 c 0.24 0.26 0.35 D 6.3 6.5 6.7 e 2.3 e1 4.6 E 3.3 3.5 3.7 H 6.7 7.0 7.3 V DS12022 - Rev 7 Max. 10º page 15/23 LDL1117 SOT223 packing information 8.2 SOT223 packing information Table 6. SOT223 tape and reel mechanical data Tape Dim. Reel mm mm Dim. Min. Typ. Max. Min. Max. A0 6.75 6.85 6.95 A B0 7.30 7.40 7.50 N K0 1.80 1.90 2.00 W1 12.4 F 5.40 5.50 5.60 W2 18.4 E 1.65 1.75 1.85 W3 W 11.7 12 12.3 P2 1.90 2 2.10 Basequantity pcs 1000 P0 3.90 4 4.10 Bulk quantity pcs 1000 P1 7.90 8 8.10 T 0.25 0.30 0.35 D 1.50 1.55 1.60 D1 1.50 1.60 1.70 180 60 11.9 15.4 Figure 29. Tape for SOT223 (dimensions are in mm) DS12022 - Rev 7 page 16/23 LDL1117 SOT223 packing information Figure 30. Reel for SOT223 (dimensions are in mm) Figure 31. SOT223 reel oriented User Direction of feed DS12022 - Rev 7 page 17/23 LDL1117 Ordering information 9 Ordering information Table 7. Order code Part number LDL1117 DS12022 - Rev 7 Marking Order code Output voltage (V) LL12 LDL1117S12R 1.185 LL15 LDL1117S15R 1.5 LL18 LDL1117S18R 1.8 LL25 LDL1117S25R 2.5 LL30 LDL1117S30R 3.0 LL33 LDL1117S33R 3.3 LL50 LDL1117S50R 5.0 page 18/23 LDL1117 Revision history Table 8. Document revision history DS12022 - Rev 7 Date Revision Changes 27-Feb-2017 1 Initial release. 30-Mar-2017 2 Updated features in cover page and Section 9: "Ordering information". Minor text changes. 04-Jul-2017 3 In Table3: "Thermal data": - thermal data values changed. Minor textchanges. 04-Mar-2020 4 Updated Figure 28. SOT223 package outline. 24-Mar-2020 5 Updated Figure 12. 03-Apr-2020 6 Added Section 8.2 SOT223 packing information. 22-Jan-2021 7 Updated Figure 9, Figure 22, Figure 23, Figure 24, Figure 25, Figure 26 and Figure 27. page 19/23 LDL1117 Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Typical application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5 Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6.1 Thermal and short-circuit protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6.2 Input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8 Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 9 8.1 SOT223 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8.2 SOT223 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 DS12022 - Rev 7 page 20/23 LDL1117 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Pin description. . . . . . . . . . . . . . . . . . Absolute maximum ratings . . . . . . . . . Thermal data. . . . . . . . . . . . . . . . . . . Electrical characteristics . . . . . . . . . . . SOT223 mechanical data . . . . . . . . . . SOT223 tape and reel mechanical data Order code . . . . . . . . . . . . . . . . . . . . Document revision history . . . . . . . . . . DS12022 - Rev 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . 5 . 5 . 6 15 16 18 19 page 21/23 LDL1117 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. DS12022 - Rev 7 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Typical application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, no load) . . . . . . . . . . . Output voltage vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, 1200 mA) . . . . . . . . . . Output voltage vs. temperature (VIN = 6 V, VOUT = 5 V, no load) . . . . . . . . . . . . . . Output voltage vs. temperature (VIN = 6 V, VOUT = 5 V, 1200 mA) . . . . . . . . . . . . . Line regulation vs. temperature (VIN = 6 to 18 V, VOUT = 5 V, IOUT = 10 mA) . . . . . . Line regulation vs. temperature (VIN = 2.5 to 18 V, VOUT = 1.2 V, IOUT = 10 mA) . . . Load regulation vs. temperature (VIN = 6 V, VOUT = 5 V, IOUT = 10 to 1200 mA) . . . Load regulation vs. temperature (VIN = 2.6 V, VOUT = 1.2 V, IOUT = 10 to 1200 mA) . Dropout voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quiescent current vs. temperature (no load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . Quiescent current vs. temperature (600 mA). . . . . . . . . . . . . . . . . . . . . . . . . . . . Quiescent current vs. temperature (1.2 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Short-circuit current vs. dropout voltage (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . Short-circuit current vs. dropout voltage (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . SVR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output noise spectral density (VO = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stability plan (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stability plan (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Turn-on time (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Turn-on time (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Line transient (VOUT = 5 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Line transient (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Load transient (VOUT = 5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Load transient (VOUT = 1.2 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SOT223 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tape for SOT223 (dimensions are in mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reel for SOT223 (dimensions are in mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SOT223 reel oriented . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . 3 . 4 . 8 . 8 . 8 . 8 . 9 . 9 . 9 . 9 10 10 10 10 11 11 11 11 12 12 12 12 12 12 13 13 14 16 17 17 page 22/23 LDL1117 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2021 STMicroelectronics – All rights reserved DS12022 - Rev 7 page 23/23