LDL212 High PSRR, low drop linear regulator IC Datasheet - production data Applications Consumer Industrial SMPS Point-of-load DC-DC post-regulation Description Features Input voltage from 2.5 V to 18 V 20 V AMR Any fixed output voltages, from 1.2 V to 12 V in 100 mV steps (from 1.2 V to 6.6 V in 50 mV steps) available on request Adjustable version from 1.18 V to VIN -VDROP(MAX) Guaranteed output current 1.2 A Typical dropout 350 [email protected] A Undervoltage lockout Enable function Internal thermal, current and power limitation High PSRR: 87 dB @ 120 Hz, 75 dB @ 1 kHz Operating temperature range: -40 °C to 125 °C Packages SO-8 batwing plastic micropackage, DFN6 (3x3) and DFN6 (2x2) March 2016 The LDL212 provides 1.2 A of maximum current from an input voltage range from 2.5 V to 18 V, with a typical dropout voltage of 350 mV @ 1.2 A. The high power supply rejection ratio of 87 dB at 120 Hz, and more than 40 dB at 100 kHz, makes the LDL212 suitable for direct regulation in SMPS and secondary linear regulation in DC-DC converters. The LDL212 goes to shutdown mode due to the enable logic control function, reducing the total current consumption. The device also includes the current limit, SOA and thermal protections. DocID028297 Rev 1 This is information on a product in full production. 1/28 www.st.com Contents LDL212 Contents 1 Block diagram.................................................................................. 3 2 Pin configuration ............................................................................. 4 3 Typical application .......................................................................... 5 4 5 Maximum ratings ............................................................................. 6 Electrical characteristics ................................................................ 7 6 Typical performance characteristics ............................................. 9 7 Package information ..................................................................... 15 7.1 DFN6 (3x3) package information .................................................... 15 7.2 DFN6 (3x3) packing information...................................................... 17 7.3 DFN6 (2x2) package information .................................................... 19 7.4 DFN6 (2x2) packing information...................................................... 22 7.5 SO8-batwing package information .................................................. 23 7.6 SO8-batwing packing information ................................................... 25 8 Ordering information..................................................................... 26 9 Revision history ............................................................................ 27 2/28 DocID028297 Rev 1 LDL212 1 Block diagram Block diagram Figure 1: Block diagram (fixed) Figure 2: Block diagram (adjustable) DocID028297 Rev 1 3/28 Pin configuration 2 LDL212 Pin configuration Figure 3: Pin configuration (top view) Table 1: Pin description Pin name Pin number (SO-8) Pin number (DFN6) VIN 4 4 Input voltage VOUT 1 3 Output voltage GND 2, 3, 6, 7 1 Ground ADJ/sense 8 2 Feedback pin for adjustable version / VOUT sense (1) on fixed version EN 5 6 Enable pin. The device is in off-state when this pin is pulled low NC - 5 Not connected Description Notes: (1) 4/28 The sense pin on the fixed version must be connected to VOUT for proper operation. DocID028297 Rev 1 LDL212 3 Typical application Typical application Figure 4: Typical application circuit (adjustable version) Figure 5: Typical application circuit (fixed version) R1 and R2 are calculated according to the following formula: R1 = R2 x (VOUT/VADJ - 1). The output voltage of the adjustable version can be set from 1.18 V to VIN-VDROP(MAX), where VDROP(MAX) is the maximum dropout voltage, as defined in Table 4: "Electrical characteristics". DocID028297 Rev 1 5/28 Maximum ratings 4 LDL212 Maximum ratings Table 2: Absolute maximum ratings Symbol VIN Parameter Unit - 0.3 to 20 V VOUT DC output voltage - 0.3 to VIN + 0.3 V VEN Enable input voltage - 0.3 to VIN + 0.3 V Output sense pin voltage - 0.3 to VIN + 0.3 V - 0.3 to 2 V VSENSE DC input voltage Value VADJ ADJ pin voltage IOUT Output current Internally limited mA PD Power dissipation Internally limited mW TSTG Storage temperature range - 55 to 150 °C TOP Operating junction temperature range - 40 to 125 °C 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 SO-8 batwing plastic micropackage DFN6 (2x2) DFN6 (3x3) 6/28 Parameter Value Thermal resistance junction-to-case 20 Thermal resistance junction-to-ambient 55 Thermal resistance junction-to-case 20 Thermal resistance junction-to-ambient 107 Thermal resistance junction-to-case 10 Thermal resistance junction-to-ambient 55 DocID028297 Rev 1 Unit °C/W LDL212 5 Electrical characteristics Electrical characteristics TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = 1 μF, COUT = 4.7 μF, IOUT = 10 mA, VEN = VIN, unless otherwise specified. a Table 4: Electrical characteristics Symbol VIN VUVLO Parameter Test conditions Operating input voltage Min. Typ. 2.5 Turn-on threshold 2.3 Hysteresis 200 Max. Unit 18 V 2.4 V mV IOUT = 10 mA TJ = 25 °C VOUT 2 % -3 3 % VOUT accuracy IOUT = 10 mA -40 °C < TJ < 125 °C VADJ -2 Adjustable pin voltage VIN = 2.5 V IOUT = 10 mA TJ = 25 °C VIN = 2.5 V IOUT = 10 mA -40 °C < TJ < 125 °C 1.18 V -2 +2 % -3 +3 % IADJ Adjustable pin current VIN = 2.5 V IOUT = 10 mA 20 ΔVOUT Line regulation VOUT + 1 V ≤ VIN ≤ 18 V IOUT = 10 mA 0.002 0.01 %/V ΔVOUT Load regulation IOUT = 10 mA to 1.2 A 0.0001 0.0005 %/mA VDROP Dropout voltage (1) IOUT = 1.2 A VOUT > 3 V -40 °C < TJ < 125 °C 350 600 mV Output noise voltage 10 Hz to 100 kHz, IOUT = 100 mA 60 eN nA µVRMS/VOUT VIN = VOUT(NOM) + 1 V ± VRIPPLE VRIPPLE = 0.5 V, f = 120 Hz SVR Supply voltage rejection 87 VIN = VOUT(NOM) + 1 V ± VRIPPLE VRIPPLE = 0.5 V, f = 1 kHz 75 dB VIN = VOUT(NOM) + 1 V ± VRIPPLE VRIPPLE = 0.5 V, f = 100 kHz IQ Quiescent current IOUT = 0 mA to 1.2 A -40 °C < TJ < 125 °C 250 380 µA VIN input current in OFF mode VEN = GND VIN = 18 V a 44 0.3 1.5 For VOUT(NOM) < 1.5 V, VIN = 2.5 V. DocID028297 Rev 1 7/28 Electrical characteristics Symbol ISC LDL212 Parameter Test conditions Short-circuit current RL = 0 Enable input logic low VIN = 2.5 V to 18 V -40 °C < TJ < 85 °C Enable input logic high VIN = 2.5 V to 18 V -40 °C < TJ < 85 °C VEN Min. Typ. 1.5 2 Unit A 0.4 V 1.2 1.5 IEN Enable input current TON Turn-on time (2) 120 Thermal shutdown 175 Hysteresis 25 TSHDN Max. VEN = VIN , VIN = 18 V 16 20 µA µs °C Notes: (1) Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This specification is not valid for output voltages below 2.2 V. (2) Turn-on time is the time measured between the enable input just exceeding VEN high value and the output voltage just reaching 95% of its nominal value. 8/28 DocID028297 Rev 1 LDL212 6 Typical performance characteristics Typical performance characteristics Figure 6: Output voltage vs temperature (VIN = 2.5 V, VOUT = VADJ, IOUT = 0 mA) Figure 7: Output voltage vs temperature (VIN = 2.5 V, VOUT = VADJ, IOUT = 1200 mA) Figure 8: Output voltage vs temperature (VIN = 6 V, VOUT = 5 V, IOUT = 10 mA) Figure 9: Output voltage vs temperature (VIN = 6 V, VOUT = 5 V, IOUT = 1200 mA) Figure 10: Line regulation vs temperature (VIN = 6 to 18 V, VOUT = 5 V, IOUT = 10 mA ) Figure 11: Line regulation vs temperature (VIN = 2.5 to 18 V, VOUT = VADJ, IOUT = 10 mA) DocID028297 Rev 1 9/28 Typical performance characteristics 10/28 LDL212 Figure 12: Load regulation vs temperature (VIN = 6 V, VOUT = 5 V, IOUT = 10 to 1200 mA ) Figure 13: Load regulation vs temperature (VIN = 2.5 V, VOUT = VADJ, IOUT = 0 to 1200 mA) Figure 14: Enable thresholds vs temperature (VOUT = VADJ) Figure 15: Enable thresholds vs temperature(VOUT = 5 V) Figure 16: Dropout voltage vs temperature Figure 17: Quiescent current vs temperature (VOUT = 5 V, IOUT = 0 mA) DocID028297 Rev 1 LDL212 Typical performance characteristics Figure 18: Quiescent current vs temperature (VOUT = 5 V, IOUT = 600 mA, 1.2 A) Figure 19: Quiescent current vs temperature (VOUT = VADJ, IOUT = 0 mA) Figure 20: Quiescent current vs temperature (VOUT = VADJ, IOUT = 600 mA) Figure 21: Quiescent current vs temperature (VOUT = VADJ, IOUT = 1.2 A) Figure 22: Off-state current vs temperature (VOUT = 5 V) Figure 23: Off-state current vs temperature (VOUT = VADJ) DocID028297 Rev 1 11/28 Typical performance characteristics 12/28 LDL212 Figure 24: Short-circuit current vs dropout voltage (VOUT = 5 V) Figure 25: Short-circuit current vs dropout voltage (VOUT = VADJ) Figure 26: SVR versus frequency Figure 27: Output noise spectral density (VO = VADJ) Figure 28: Output noise spectral density (VO = 5 V) Figure 29: Output noise spectral density (VO = 12 V) DocID028297 Rev 1 LDL212 Typical performance characteristics Figure 30: Stability plan (VOUT = 5 V) Figure 31: Stability plan (VOUT = VADJ) Figure 32: Startup with enable (VOUT = 5 V) Figure 33: Startup with enable (VOUT = VADJ) Figure 34: Turn-on time (VOUT = 5 V) Figure 35: Turn-on time (VOUT = VADJ) DocID028297 Rev 1 13/28 Typical performance characteristics 14/28 LDL212 Figure 36: Line transient (VOUT = 5 V) Figure 37: Line transient (VOUT = VADJ) Figure 38: Load transient (VOUT = 5 V) Figure 39: Load transient (VOUT = VADJ) DocID028297 Rev 1 LDL212 7 Package information 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. 7.1 DFN6 (3x3) package information Figure 40: DFN6 (3x3) package outline DocID028297 Rev 1 15/28 Package information LDL212 Table 5: DFN6 (3x3) mechanical data mm Dim. Min. A 0.80 A1 0 A3 0.23 D 2.90 D2 2.23 E 2.90 E2 1.50 e 1 0.02 0.05 0.45 3 3.10 2.50 3 3.10 1.75 0.95 0.30 0.40 Figure 41: DFN6 (3x3) recommended footprint 16/28 Max. 0.20 b L Typ. DocID028297 Rev 1 0.50 LDL212 7.2 Package information DFN6 (3x3) packing information Figure 42: DFN6 (3x3) tape outline 7875978_N DocID028297 Rev 1 17/28 Package information LDL212 Figure 43: DFN6 (3x3) reel outline 7875978_N Table 6: DFN6 (3x3) tape and reel mechanical data mm Dim. 18/28 Min. Typ. Max. A0 3.20 3.30 3.40 B0 3.20 3.30 3.40 K0 1 1.10 1.20 DocID028297 Rev 1 LDL212 7.3 Package information DFN6 (2x2) package information Figure 44: DFN6 (2x2) package outline 7733060 revE DocID028297 Rev 1 19/28 Package information LDL212 Table 7: DFN6 (2x2) mechanical data mm Dim. 20/28 Min. Typ. Max. A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 - 0.203 ref - b 0.25 0.30 0.35 D - 2.00 - E - 2.00 - e - 0.50 - D2 0.77 0.92 1.02 E2 1.30 1.45 1.55 K 0.15 - - L 0.20 0.30 0.40 aaa - 0.05 - bbb - 0.10 - ccc - 0.10 - ddd - 0.05 - eee - 0.08 - DocID028297 Rev 1 LDL212 Package information Figure 45: DFN6 (2x2) recommended footprint 7733060 revE DocID028297 Rev 1 21/28 Package information 7.4 LDL212 DFN6 (2x2) packing information Figure 46: DFN6 (2x2) reel outline Table 8: DFN6(2x2) tape and reel mechanical data Dim. mm Min. Typ. A 180 C 12.8 D 20.2 N 60 13.2 T 22/28 Max. 14.4 A0 2.4 B0 2.4 K0 1.3 P0 4 P 4 DocID028297 Rev 1 LDL212 7.5 Package information SO8-batwing package information Figure 47: SO-8 batwing package outline Table 9: SO-8 batwing mechanical data mm Dim. Min. Typ. A Max. 1.75 A1 0.10 A2 1.25 b 0.31 0.51 b1 0.28 0.48 c 0.10 0.25 c1 0.10 0.23 D 4.80 4.90 5.00 E 5.80 6.00 6.20 E1 3.80 3.90 4.00 e 0.25 1.27 h 0.25 0.50 L 0.40 1.27 L1 1.04 L2 0.25 k 0° ccc 8° 0.10 DocID028297 Rev 1 23/28 Package information LDL212 Figure 48: SO-8 batwing recommended footprint 24/28 DocID028297 Rev 1 LDL212 7.6 Package information SO8-batwing packing information Figure 49: SO8-batwing tape and reel outline Table 10: SO8-batwing mechanical data mm Dim. Min. A Typ. Max. 330 C 12.8 D 20.2 N 60 T 13.2 22.4 A0 8.1 8.5 B0 5.5 5.9 K0 2.1 2.3 P0 3.9 4.1 P 7.9 8.1 DocID028297 Rev 1 25/28 Ordering information 8 LDL212 Ordering information Table 11: Order code DFN6 (3x3) DFN6 (2x2) SO-8 batwing plastic micropackage LDL212PU12R 1.2 LDL212PU15R 1.5 LDL212PU18R 1.8 LDL212PU25R 2.5 LDL212PU30R 3 LDL212D33R 3.3 LDL212PU50R LDL212PUR 26/28 Output voltage (V) 5 LDL212PVR LDL212DR DocID028297 Rev 1 Adjustable LDL212 9 Revision history Revision history Table 12: Document revision history Date Revision 02-Mar-2016 1 DocID028297 Rev 1 Changes Initial release. 27/28 LDL212 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. © 2016 STMicroelectronics – All rights reserved 28/28 DocID028297 Rev 1