LDL1117 1.2 A high PSRR low-dropout linear voltage regulator Datasheet - production data Applications Consumer Industrial SMPS Motherboard P.O.L. DC-DC post-regulation Description Features 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 July 2017 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. DocID030319 Rev 3 This is information on a product in full production. 1/20 www.st.com Contents LDL1117 Contents 1 Block diagram.................................................................................. 5 2 Pin configuration ............................................................................. 6 3 Typical application .......................................................................... 7 4 5 Maximum ratings ............................................................................. 8 Electrical characteristics ................................................................ 9 6 Application information ................................................................ 10 6.1 Thermal and short-circuit protections .............................................. 10 6.2 Input and output capacitor selection ................................................ 10 7 Typical performance characteristics ........................................... 11 8 Package information ..................................................................... 16 8.1 SOT223 package information.......................................................... 16 9 Ordering information..................................................................... 18 10 Revision history ............................................................................ 19 2/20 DocID030319 Rev 3 LDL1117 List of tables List of tables Table 1: Pin description .............................................................................................................................. 6 Table 2: Absolute maximum ratings ........................................................................................................... 8 Table 3: Thermal data ................................................................................................................................. 8 Table 4: Electrical characteristics ............................................................................................................... 9 Table 5: SOT223 package mechanical data ............................................................................................ 17 Table 6: Order code .................................................................................................................................. 18 Table 7: Document revision history .......................................................................................................... 19 DocID030319 Rev 3 3/20 List of figures LDL1117 List of figures Figure 1: Block diagram .............................................................................................................................. 5 Figure 2: Pin configuration (top view) ......................................................................................................... 6 Figure 3: Typical application schematic ...................................................................................................... 7 Figure 4: Output voltage vs temperature (VIN = 2.6 V, VOUT = 1.2 V, no-load) .................................... 11 Figure 5: Output voltage vs temperature (VIN = 2.6 V, VOUT = 1.2, 1200 mA) ..................................... 11 Figure 6: Output voltage vs temperature (VIN = 6 V, VOUT = 5 V, no-load) .......................................... 11 Figure 7: Output voltage vs temperature (VIN = 6 V, VOUT =5 V, 1200 mA) ......................................... 11 Figure 8: Line regulation vs temperature (VIN = 6 to 18 V, VOUT = 5 V, IOUT = 10 mA) ...................... 12 Figure 9: Line regulation vs temperature (VIN = 2.5 to 18 V, VOUT = 1.2 V, IOUT = 10 mA) ................ 12 Figure 10: Load regulation vs temperature (VIN = 6 V, VOUT = 5 V, IOUT = 10 to 1200 mA) ............... 12 Figure 11: Load regulation vs temperature (VIN = 2.6 V, VOUT = 1.2 V, IOUT = 10 to 1200 mA) ......... 12 Figure 12: Dropout voltage vs temperature .............................................................................................. 12 Figure 13: Quiescent current vs temperature (no-load)........................................................................... 12 Figure 14: Quiescent current vs temperature (600 mA) .......................................................................... 13 Figure 15: Quiescent current vs temperature (1.2 A) .............................................................................. 13 Figure 16: Short-circuit current vs dropout voltage (VOUT = 5 V) ............................................................ 13 Figure 17: Short-circuit current vs dropout voltage (VOUT = 1.2 V) ......................................................... 13 Figure 18: SVR vs frequency .................................................................................................................... 13 Figure 19: Output noise spectral density (VO = 1.2 V) ............................................................................. 13 Figure 20: Stability plan (VOUT = 5 V) ..................................................................................................... 14 Figure 21: Stability plan (VOUT = 1.2 V) .................................................................................................. 14 Figure 22: Turn-on time (VOUT = 5 V) ..................................................................................................... 14 Figure 23: Turn-on time (VOUT = 1.2 V) .................................................................................................. 14 Figure 24: Line transient (VOUT = 5 V) .................................................................................................... 14 Figure 25: Line transient (VOUT = 1.2 V) ................................................................................................. 14 Figure 26: Load transient (VOUT = 1.2 V) ................................................................................................ 15 Figure 27: Load transient (VOUT = 5 V) ................................................................................................... 15 Figure 28: SOT223 package outline ......................................................................................................... 16 4/20 DocID030319 Rev 3 LDL1117 1 Block diagram Block diagram Figure 1: Block diagram DocID030319 Rev 3 5/20 Pin configuration 2 LDL1117 Pin configuration Figure 2: Pin configuration (top view) Table 1: Pin description Pin name Pin number GND 1 Ground VOUT 2 Output voltage VIN 3 Input voltage The tab is connected to VOUT. 6/20 DocID030319 Rev 3 Description LDL1117 3 Typical application Typical application Figure 3: Typical application schematic DocID030319 Rev 3 7/20 Maximum ratings 4 LDL1117 Maximum ratings Table 2: Absolute maximum ratings Symbol VIN Parameter 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 Pd Power dissipation Internally limited W TJ-OP Operating junction temperature -40 to 125 C TJ-MAX Maximum junction temperature 150 C -55 to 150 C TSTG 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 8/20 Parameter Value J-C Thermal resistance junction-to-case 15 J-A Thermal resistance junction-to-ambient 120 DocID030319 Rev 3 Unit C/W LDL1117 5 Electrical characteristics Electrical characteristics (TJ = 25 C, VIN = VOUT + 1 V or 2.6 V, whichever is greater; CIN = 1 F; COUT = 4.7 F; IOUT = 10 mA) Table 4: Electrical characteristics Symbol VIN VUVLO VOUT Parameter Test conditions Operating input voltage Min. 2.6 Turn-on threshold 2.3 Hysteresis VOUT accuracy Typ. IOUT = 10 mA -40 C < TJ < 125 C -3 +3 % IOUT = 10 mA to 1.2 A -40 C < TJ < 125 C VDROP Dropout voltage(2) IOUT = 1.2 A, VOUT > 2.5 V 40 C < TJ < 125 C 350 Output noise voltage 10 Hz to 100 kHz, IOUT = 100 mA 60 VIN = VOUT(NOM) +1 V VRIPPLE VRIPPLE = 0.5 V, f = 120 Hz 87 VIN = VOUT(NOM) +1 V VRIPPLE VRIPPLE = 0.5 V, f = 1 kHz 80 VIN = VOUT(NOM) +1 V VRIPPLE VRIPPLE = 0.5 V, f = 100 kHz 65 IOUT = 0 mA to 1.2 A, -40 C < TJ < 125 C 250 ISC Output current TSHDN mV % Load regulation Quiescent current V +2 VOUT IQ 2.4 -2 Line regulation Supply voltage rejection V IOUT = 10 mA, TJ = 25 C VOUT SVR Unit 18 200 VOUT + 1 V(1) VIN 18 V, IOUT = 10 mA, -40 C < TJ < 125 C eN Max. 1.5 0.002 0.02 %/V 5 15 mV 600 mV 2 Thermal shutdown 175 Hysteresis 25 VRMS/VOUT dB 500 A A C Notes: (1)V IN = 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. DocID030319 Rev 3 9/20 Application information LDL1117 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: "Typical performance characteristics". 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: Equation 1 = (125 - ) - 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 F. 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: "Stability plan (VOUT = 5 V)" and Figure 21: "Stability plan (VOUT = 1.2 V)". 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 F input and 4.7 F output capacitors offers a good compromise among the stability of the regulator, optimum transient response and total PCB area occupation. 10/20 DocID030319 Rev 3 Typical performance characteristics LDL1117 7 Typical performance 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, 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) DocID030319 Rev 3 11/20 Typical performance characteristics LDL1117 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) Figure 10: Load regulation vs temperature (VIN = 6 V, VOUT = 5 V, IOUT = 10 to 1200 mA) Figure 11: Load regulation vs temperature (VIN = 2.6 V, VOUT = 1.2 V, IOUT = 10 to 1200 mA) Figure 12: Dropout voltage vs temperature Figure 13: Quiescent current vs temperature (no-load) 12/20 DocID030319 Rev 3 Typical performance characteristics LDL1117 Figure 14: Quiescent current vs temperature (600 mA) Figure 15: Quiescent current vs temperature (1.2 A) 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) DocID030319 Rev 3 13/20 Typical performance characteristics 14/20 LDL1117 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) DocID030319 Rev 3 Typical performance characteristics LDL1117 Figure 26: Load transient (VOUT = 1.2 V) Figure 27: Load transient (VOUT = 5 V) DocID030319 Rev 3 15/20 Package information 8 LDL1117 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK (R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. 8.1 SOT223 package information Figure 28: SOT223 package outline 16/20 DocID030319 Rev 3 LDL1117 Package information Table 5: SOT223 package mechanical data mm Dim. Min. Typ. A Max. 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 10 DocID030319 Rev 3 17/20 Ordering information 9 LDL1117 Ordering information Table 6: Order code Part number LDL1117 18/20 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 DocID030319 Rev 3 LDL1117 10 Revision history Revision history Table 7: Document revision history 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 Table 3: "Thermal data": - thermal data values changed Minor text changes. DocID030319 Rev 3 19/20 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. 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. (c) 2017 STMicroelectronics - All rights reserved 20/20 DocID030319 Rev 3