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september 2016 docid028297 rev 2 1 / 28 this is information on a product in full production. www.st.com ldl212 high psrr, low drop linear regulator ic datasheet - production data 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 versi on from 1.18 v to v in - v drop(max) ? guaranteed output current 1.2 a ? typical dropout 350 mv@1.2 a ? undervoltage lockout ? enable function ? internal thermal, current and power limitation ? high psrr: 87 db @ 120 hz, 75 db @ 1 khz ? operating tempera ture range: - 40 c to 125 c ? packages so - 8 batwing plastic micropackage, dfn6 (3x3) and dfn6 (2x2) applications ? consumer ? industrial ? smps ? point - of - load ? dc - dc post - regulation description 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 rej ection 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, reducin g the total current consumption. the device also includes the current limit, soa and thermal protections.
contents ldl212 2 / 28 docid028297 rev 2 contents 1 block diagram ................................ ................................ .................. 3 2 pin configuration ................................ ................................ ............. 4 3 typical application ................................ ................................ .......... 5 4 maximum ratings ................................ ................................ ............. 6 5 electrical characteristics ................................ ................................ 7 6 typical performance characteristics ................................ ............. 9 7 package infor mation ................................ ................................ ..... 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) pack ing information ................................ ...................... 22 7.5 so8 - batwing package information ................................ .................. 23 7.6 so8 - batwing packing information ................................ ................... 25 8 ordering information ................................ ................................ ..... 26 9 revision history ................................ ................................ ............ 27
ldl212 block diagram docid028297 rev 2 3 / 28 1 block diagram figure 1 : block diagram (fixed) figure 2 : block diagram (adjustable)
pin configuration ldl212 4 / 28 docid028297 rev 2 2 pin configuration figure 3 : pin configuration (top view) table 1: pin description pin name pin number (so - 8) pin number (dfn6) description v in 4 4 input voltage v out 1 3 output voltage gnd 2, 3, 6, 7 1 ground adj/sense 8 2 feedback pin for adjustable version / v out 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 notes: (1) the sense pin on the fixed version must be connected to v out for proper operation.
ldl212 typical application docid028297 rev 2 5 / 28 3 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: r 1 = r 2 x (v out /v adj - 1). the output voltage of the adjustable version can be set from 1.18 v to v in - v drop(max) , where v drop(max) is the maximum dropout voltage, as defined in table 4: "electrical characteristics" .
maximum ratings ldl212 6 / 28 docid028297 rev 2 4 maximum ratings table 2: absolute maximum ratings symbol parameter value unit v in dc input voltage - 0.3 to 20 v v out dc output voltage - 0.3 to v in + 0.3 v v en enable input voltage - 0.3 to v in + 0.3 v v sense output sense pin voltage - 0.3 to v in + 0.3 v v adj adj pin voltage - 0.3 to 2 v i out output current internally limited ma p d power dissipation internally limited mw t stg storage temperature range - 55 to 150 c t op 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 parameter value unit so - 8 batwing plastic micropackage thermal resistance junction - to - case 20 c/w thermal resistance junction - to - ambient 55 dfn6 (2x2) thermal resistance junction - to - case 15 thermal resistance junction - to - ambient 65 dfn6 (3x3) thermal resistance junction - to - case 10 thermal resistance junction - to - ambient 55
ldl212 electrical characteristics docid028297 rev 2 7 / 28 5 electrical characteristics t j = 25 c, v in = v out(nom) + 1 v, c in = 1 f, c out = 4.7 f, i out = 10 ma, v en = v in , unless otherwise specified. a table 4: electrical characteristics symbol parameter test conditions min. typ. max. unit v in operating input voltage 2.5 18 v v uvlo turn - on threshold 2.3 2.4 v hysteresis 200 mv v out v out accuracy i out = 10 ma - 2 2 % t j = 25 c i out = 10 ma - 3 3 % - 40 c < t j < 125 c v adj adjustable pin voltage v in = 2.5 v i out = 10 ma t j = 25 c 1.18 v - 2 +2 % v in = 2.5 v i out = 10 ma - 40 c < t j < 125 c - 3 +3 % i adj adjustable pin current v in = 2.5 v i out = 10 ma 20 na v out line regulation v out + 1 v v in 18 v i out = 10 ma 0.002 0.01 %/v v out load regulation i out = 10 ma to 1.2 a 0.0001 0.0005 %/ma v drop dropout voltage (1) i out = 1.2 a v out > 3 v - 40 c < t j < 125 c 350 600 mv en output noise voltage 10 hz to 100 khz, i out = 100 ma 60 v rms /v out svr supply voltage rejection v in = v out(nom) + 1 v v ripple 87 db v ripple = 0.5 v, f = 120 hz v in = v out(nom) + 1 v v ripple 75 v ripple = 0.5 v, f = 1 khz v in = v out(nom) + 1 v v ripple 50 v ripple = 0.5 v, f = 100 khz i q quiescent current i out = 0 ma to 1.2 a - 40 c < t j < 125 c 250 380 a v in input current in off mode 0.3 1.5 a for v out(nom) 1.5 v, v in = 2.7 v.
electrical characteristics ldl212 8 / 28 docid028297 rev 2 symbol parameter test conditions min. typ. max. unit v en = gnd v in = 18 v i sc short - circuit current r l = 0 1.5 2 a v en enable input logic low v in = 2.5 v to 18 v - 40 c < t j < 85 c 0.4 v enable input logic high v in = 2.5 v to 18 v - 40 c < t j < 85 c 1.2 i en enable input current 1.5 a v en = v in , v in = 18 v 16 20 t on turn - on time (2) 120 s t shdn thermal shutdown 175 c hysteresis 25 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 e xceeding v en high value and the output voltage just reaching 95% of its nominal value.
ldl212 typical performance characteristics docid028297 rev 2 9 / 28 6 typical performance characteristics figure 6 : output voltage vs temperature (v in = 2.5 v, v out = v adj , i out = 0 ma) figure 7 : output voltage vs temperature (v in = 2.5 v, v out = v adj , i out = 1200 ma) figure 8 : output voltage vs temperature (v in = 6 v, v out = 5 v, i out = 10 ma) figure 9 : output voltage vs temperature (v in = 6 v, v out = 5 v, i out = 1200 ma) figure 10 : line regulation vs temperature (v in = 6 to 18 v, v out = 5 v, i out = 10 ma ) figure 11 : line regulation vs temperature (v in = 2.5 to 18 v, v out = v adj , i out = 10 ma)
typical performance characteristics ldl212 10 / 28 docid028297 rev 2 figure 12 : load regulation vs temperature (v in = 6 v, v out = 5 v, i out = 10 to 1200 ma ) figure 13 : load regulation vs temperature (v in = 2.5 v, v out = v adj , i out = 0 to 1200 ma) figure 14 : enable thresholds vs temperature (v out = v adj ) figure 15 : enable thresholds vs temperature (v out = 5 v) figure 16 : dropout voltage vs temperature figure 17 : quiescent current vs temperature (v out = 5 v, i out = 0 ma)
ldl212 typical performance characteristics docid028297 rev 2 11 / 28 figure 18 : quiescent current vs temperature (v out = 5 v, i out = 600 ma, 1.2 a) figure 19 : quiescent current vs temperature (v out = v adj , i out = 0 ma) figure 20 : quiescent current vs temperature (v out = v adj , i out = 600 ma) figure 21 : quiescent current vs temperature (v out = v adj , i out = 1.2 a) figure 22 : off - state current vs temperature (v out = 5 v) figure 23 : off - state current vs temperature (v out = v adj )
typical performance characteristics ldl212 12 / 28 docid028297 rev 2 figure 24 : short - circuit current vs dropout voltage (v out = 5 v) figure 25 : short - circuit current vs dropout voltage (v out = v adj ) figure 26 : svr versus frequency figure 27 : output noise spectral density (v o = v adj ) figure 28 : output noise spectral density (v o = 5 v) figure 29 : output noise spectral density (v o = 12 v)
ldl212 typical performance characteristics docid028297 rev 2 13 / 28 figure 30 : stability plan (v out = 5 v) figure 31 : stability plan (v out = v adj ) figure 32 : startup with enable (v out = 5 v) figure 33 : startup with enable (v out = v adj ) figure 34 : turn - on time (v out = 5 v) figure 35 : turn - on time (v out = v adj )
typical performance characteristics ldl212 14 / 28 docid028297 rev 2 figure 36 : line transient (v out = 5 v) figure 37 : line transient (v out = v adj ) figure 38 : load transient (v out = 5 v) figure 39 : load transient (v out = v adj )
ldl212 package information docid028297 rev 2 15 / 28 7 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
package information ldl212 16 / 28 docid028297 rev 2 table 5: dfn6 (3x3) mechanical data dim. mm min. typ. max. a 0.80 1 a1 0 0.02 0.05 a3 0.20 b 0.23 0.45 d 2.90 3 3.10 d2 2.23 2.50 e 2.90 3 3.10 e2 1.50 1.75 e 0.95 l 0.30 0.40 0.50 figure 41 : dfn6 (3x3) recommended footprint
ldl212 package information docid028297 rev 2 17 / 28 7.2 dfn6 (3x3) packing information figure 42 : dfn6 (3x3) tape outline 7875978_n
package information ldl212 18 / 28 docid028297 rev 2 figure 43 : dfn6 (3x3) reel outline table 6: dfn6 (3x3) tape and reel mechanical data dim. mm min. typ. max. a0 3.20 3.30 3.40 b0 3.20 3.30 3.40 k0 1 1.10 1.20 7875978_n
ldl212 package information docid028297 rev 2 19 / 28 7.3 dfn6 (2x2) package information figure 44 : dfn6 (2x2) package outline 7733060 reve
package information ldl212 20 / 28 docid028297 rev 2 table 7: dfn6 (2x2) mechanical data dim. mm 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 -
ldl212 package information docid028297 rev 2 21 / 28 figure 45 : dfn6 (2x2) recommended footprint 7733060 reve
package information ldl212 22 / 28 docid028297 rev 2 7.4 dfn6 (2x2) packing information figure 46 : dfn6 (2x2) reel outline table 8: dfn6 (2x2) tape and reel mechanical data dim. mm min. typ. max. a 180 c 12.8 13.2 d 20.2 n 60 t 14.4 a0 2.4 b0 2.4 k0 1.3 p0 4 p 4
ldl212 packa ge information docid028297 rev 2 23 / 28 7.5 so8 - batwing package information figure 47 : so - 8 batwing package outline table 9: so - 8 batwing mechanical data dim. mm min . typ . max . a 1.75 a1 0.10 0.25 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 1.27 h 0.25 0.50 l 0.40 1.27 l1 1.04 l2 0.25 k 0 8 ccc 0.10
package information ldl212 24 / 28 docid028297 rev 2 figure 48 : so - 8 batwing recommended footprint
ldl212 package information docid028297 rev 2 25 / 28 7.6 so8 - batwing packing information figure 49 : so8 - batwing tape and reel outline table 10: so8 - batwing mechanical data dim. mm min. typ. max. a 330 c 12.8 13.2 d 20.2 n 60 t 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
ordering information ldl212 26 / 28 docid028297 rev 2 8 ordering information table 11: order code dfn6 (3x3) dfn6 (2x2) so - 8 batwing plastic micropackage output voltage (v) ldl212pu12r 1.2 ldl212pu15r 1.5 ldl212pu18r 1.8 ldl212pu25r 2.5 ldl212pu30r 3 ldl212d33r 3.3 ldl212pu50r 5 ldl212pur ldl212pvr LDL212DR adjustable
ldl212 revision history docid028297 rev 2 27 / 28 9 revision history table 12: document revision history date revision changes 02 - mar - 2016 1 initial release. 19 - sep - 2016 2 updated table 3: "thermal data" and section 5: "electrical characteristics" . minor text changes.
ldl212 28 / 28 docid028297 rev 2 important notice C 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 sts terms and conditions of sale in place at the time of or der acknowledgement. purchasers are solely responsible for the choice, selection, and use of st products and s t 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 se t 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 C all rights reserved

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