ST LK112xx Low noise low drop voltage regulator with shutdown function handbook
Contents
1. LK112XX55 LK112XX80 February 2011 Doc ID 7362 Rev 16 1 17 www st com Contents LK112xx Contents 1 Diagram un 5 AR a ka 3 2 Pin configuration sss s son ra ROS teen a RR RR 8 8 8 8 8 4 3 Maximum ratings as ix zave ce o na ss cipa sa ee eu cha NE dra acd ad 5 4 Electrical characteristics 6 5 Typical characteristics 7 6 Package mechanical data 12 7 Order cod s uunc a n ope i a Qu D Qaa AO 5 15 8 Revision history sans decide x cap 5 54 66 88 86 URL cd 16 2 17 Doc ID 7362 Rev 16 277 LK112xx Diagram 1 Diagram Figure 1 Schematic diagram Vin Vout O e e e O CURRENT LIMIT SHDN START UP REFERENCE e ERROR DRYER SHUTDOW VOLTAGE AMPLIFIER Los e e BYPASS TERM PROTEC FE rm CS01230 ky Doc ID 7362 Rev 16 3 17 Pin configuration LK112xx 2 Pin configuration Figure 2 Pin connection top view Table 2 Pin description Pin n Symbol Note Shutdown input disables the regulator when is connected to GND or to positive 1 SHDN voltage less than 0 6 V Ground pin Internally connected to the die attach flag to decrease the total thermal 2 GND2. voltage la uA 200 150 100 50 CS01380 0 2 4 6 8 10 12 14 16 18 V V Cs01390 gua 200 150 100 50 3 4 Vsion V Figure 19 Quiescent current vs output Figure 20 Reverse current vs reverse voltage current CS01400 REV 501410 9 uA Vi 0 Ka Vo 3 8V 1200 150 800 100 400 50 0 0 0 20 40 60 80 lo mA D 2 4 6 8 10 12 14Vpev V Doc ID 7362 Rev 6 9 17 Typical characteristics LK112xx Figure 21 Stability Figure 22 Spectrum noise CS01420 ESR Q Stability Zone 10 10 107 10 0 2 4 8 B 10 12 14 16 18Co uF N 501450 D LUE lo 60mA Vo 3 8V Vozvi HIV 500 Vsupu 7 4V 400 Vo72 5V 500 200 Vo 3 8V Cayp 100nF 100 9 ne Vo 2 5V 0 10 20 30 40 50 60 70 f KHz Figure 23 Start up transient Figure 24 Start up transient Tek Run
3. 197 LK112xx Low noise low drop voltage regulator with shutdown function Features Output current up to 150 mA m Low dropout voltage 350 mV at lour 50 mA m Very low quiescent current 0 1 pA in OFF mode and max 250 pA in ON mode at laour O mA m Low output noise typ 30 UV at lour 60 mA and 10 Hz f gt 80 kHz m Wide range of output voltages Internal current and thermal limit m Operative input voltage from Vout 0 5 to 14 V for Vour gt 2 V or from 2 5 V to 14 V for VouT 2 V Description The LK112xx is a low dropout linear regulator with a built in electronic switch The internal switch can be controlled by TTL or CMOS logic levels The device is ON state when the control pin is pulled to a logic high level An external capacitor can be used connected to the noise bypass pin to lower the output noise level to 30 uVrms An internal PNP pass transistor is used to achieve a low dropout voltage The LK112xx has a very low quiescent current in ON MODE while in OFF MODE the ly is reduced down to 100 nA max The internal thermal shutdown circuitry limits the junction temperature to below 150 C The load current is internally monitored and the device will shutdown in the presence of a short circuit or overcurrent condition at the output Table 1 Device summary SOT23 5L LK112XX15 LK112XX25 Part numbers LK112XX50 LK112XX60 LK112XX18 LK112XX33
4. 0 24 Va Dropout voltage lo 150 mA 0 29 0 35 V lo Output current limit 150 mA E V Vot 5V Cpyp 0 1 UF SVR Supply voltage rejection Co 10 f 400Hz lo 30mA 55 dB B 10Hz to 80kHz Cpyp 0 1uF eN Output noise voltage Co 10UF V Vo 1 5V lo 60mA 30 pVrms IsupN Shutdown input current Vsupn 1 8V Output ON 12 35 UA 7 Bruna eal Output ON 1 8 k HDN utdown input logic S Output OFF 0 6 Output voltage o AVo Ty temperature coefficient lg Tom PS Ine 1 Only for version with output voltage more than 2 1 V Note 6 17 For version with output voltage less than 2 V Viy 2 4 V Doc ID 7362 Rev 16 LK112xx Typical characteristics 5 Typical characteristics Unless otherwise specified Ty 25 C C 1 pF Co 2 2 UF Cgyp 100 nF Figure 3 Output voltage vs temperature Figure 4 Output voltage vs temperature CS01240 CS01250 Vo V Vo
5. S S resistance and increase the package ability to dissipate power 3 Bypass Bypass pin bypass with 0 1 uF to improve the Vperp thermal noise performances 4 OUT Output port 5 IN Input port 4 17 Doc ID 7362 Rev 16 ky LK112xx Maximum ratings 3 Maximum ratings Table 3 Absolute maximum ratings Symbol Parameter Value Unit Vi DC input voltage 16 V VsHDN DC input voltage 16 V lo Output current Internally limited TsTG Storage temperature range 55 to 150 C Top Operating junction temperature range 40 to 125 C Table 4 Thermal data Symbol Parameter SOT23 5L Unit Rihuc Thermal resistance junction case 81 C W Thermal resistance junction ambient 255 C W Doc ID 7362 Rev 16 5 17 Electrical characteristics LK112xx 4 Electrical characteristics Ty 25 C VIN Vout 1 V louT 0 mA VsHDN 1 8 V Ci 1 UF Co z 2 2 UF CBvPAss 0 1 pF unless otherwise specified Table 5 Electrical characteristics for LK112 Symbol Parameter Test conditions Min Typ Max Unit ON MODE except laun 175 250 HA 6 Quiescent current OFF MODE Vi 8V VsHDN UV 0 0 1 UA Vo Output voltage lo 30mA see table Vi Vo 1V to Vot6V Vo gt 5 6V 0 7 20 mV Line regulation V Vo 1V to Vot6V Vo gt 5 6V 0 8 40 mV lo lt 1 to 60mA 15 30 mV AVo Load regulation lo lt 1 to 150mA 25 90 mV lo 60 mA V 0 17
6. Average F Vo 2 5V VsHDN Oto 1 8V C 1pF 3 5 Co 4 7UF Cpyp 1 OnF Tek Run 5 80 45 Average E V 3 5V Vo 2 5V VsHDN Oto 1 8V 2680 C 1pF Co 4 74F Cpyp 1 00nF Figure 25 Line transient Figure 26 Line transient Tek asome 7344 8 stops V 3 5 to 4 5V Vo 2 5V VsHDN 1 8V lo lt 30mA no C Co 1004F Cgypz10nF 2 5 KLL PD HH H t t bere rol trn 5 to 4 5V Vo 2 5V VsHDN 1 8V 30 no C Co 10pF Cgyp 10nF 10 17 Doc ID 7362 Rev 16 LK112xx Typical characteristics Figure 27 Line transient Figure 28 Load transient V 3 5 to 4 5V Vo 2 5V VsHDN 1 8V lp 30mA no Ci Co 1pF Cpyp 1 nF t t 2us TBK Run Average kalanna lalala ands aaja 4 4 4 4 4 4 4 14 41 4 4 44 4 Vj 3 5V Vo 2 5V VsHDN 1 8V 19 50 to 100mA C 1pF Co 2 24F Cpyp 1 OnF t t 250ns Figure 29 Load transient Figure 30 Load transient Tek Run 1 00MS s Average t T i i 4 H 1 1 1 B V 3 5V Vo 2 5V VsHDN 1 8V 19 50 to 100 Cl UF Co 10pF Cpyp 1 OOnF t t 250n
7. Min Voyr Max Test voltage LK112M14TR 1 4 1 34 1 46V 2 4 LK112M15TR 1 5V 1 44 1 56V 2 4 LK112M18TR 1 8V 1 74 1 86V 2 4 LK112M19TR 1 9V 1 84V 1 96V 2 4 LK112M20TR 2 0V 1 94V 2 06V 3 0V LK112M22TR 1 2 2V 2 14V 2 26V 3 2V LK112M23TR 2 3V 2 24V 2 36V 3 3V LK112M24TR 01 2 4V 2 34V 2 46V 3 4V LK112M25TR 2 5V 2 44 2 56V 3 5 LK112M26TR 2 6V 2 54V 2 66V 3 6V LK112M29TR 1 2 9V 2 84V 2 96V 3 9V LK112M31TR 3 1V 3 04V 3 16V 4 1V LK112M33TR 3 3V 3 24V 3 36V 4 3 LK112M34TR 3 4V 3 335V 3 465V 4 4 LK112M35TR 3 5V 3 435V 3 565V 4 5V LK112M37TR 3 7V 3 630V 3 770V 4 7 LK112M39TR 3 9V 3 825V 3 975V 4 9V LK112M41TR 4 1V 4 020V 4 180V 5 1V LK112M42TR V 4 2V 4 120V 4 280V 5 2V LK112M43TR 4 3 4 215 4 385V 5 3V LK112M44TR 1 4 4V 4 315V 4 485V 5 4V LK112M45TR 1 4 5V 4 410V 4 590V 5 5V LK112M46TR 4 6V 4 510V 4 690V 5 6V LK112M48TR 1 4 8V 4 705V 4 895V 5 8V LK112M49TR 4 9V 4 800V 5 000V 5 9V LK112M50TR 5 0V 4 900V 5 100V 6 0V LK112M55TR 5 5V 5 390V 5 610V 6 5V LK112M60TR 6 0V 5 880V 6 120V 7 0V LK112M80TR 8 0V 7 840V 8 160V 9 0V Available on request 4 Doc ID 7362 Rev 16 15 17 Revision history LK112xx 8 Revision history Table 7 Document revision history Date Revision Changes 31 Jan 2005 8 Change maturity code 13 Jun 2006 9 Order codes updated and new template 17 Oct 2006 10 The Top val
8. V 2 58 3 96 2 56 3 92 2 54 3 88 2 52 3 84 2 50 TROPPI 3 80 2 48 3 76 Vi 2 5 V 3 8V Ka Vo 3 5V n Vo 4 8V 2 44 Vsupn 8V 3 68 VsHpN 1 BV lo 30mA lo 30mA 2 42 3 64 2 40 3 60 50 25 0 25 50 75 Ti C 50 25 0 25 50 75 LYC Figure 5 Line regulation vs temperature Figure 6 Load regulation vs temperature Line CS01260 Load C301270 mv mv V 3 5V 10 20 6 2 5 1 8V 0 0 V 3 5 fo 8 5V IX p NU 10 Vo 2 5V 20 po lo 1 to 100mA 20 40 50 25 0 25 50 75 C 50 25 0 253 50 75 Figure 7 Dropout voltage vs temperature Figure 8 Short circuit current vs dropout voltage CS01280 501290 Va V Isc A 0 30 0 100mA 9 5 Vo 2 5V 0 25 VsHon 2V 0 60mA 0 20 Vo 2 5V 0 2 0 30MA E 0 05 0 0 50 25 0 25 50 75 0 25 5 75 10 125 Doc ID 7362 Rev 16 7 17 Typical characteristics LK112xx Figure 9 Output voltage vs input voltage Figure 10 Shutdown voltage vs temperature CS01300 CS01310 var K 2 5 1 5 2 0 ON hu Vo 3 5V ia OFF EET 1 0 V 3 5V 0 5 Vo 2 5V lo 1mA 0 5 0 0 0 25 5 7 5 10 12 5 Vg V 50 25 0 2
9. respective owners 2011 STMicroelectronics All rights reserved STMicroelectronics group of companies Australia Belgium Brazil Canada China Czech Republic Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Philippines Singapore Spain Sweden Switzerland United Kingdom United States of America www st com ky Doc ID 7362 Rev 16 17 17
10. 5 50 75 C Figure 11 Shutdown current vs shutdown Figure 12 Supply voltage rejection vs voltage temperature ISHDN 20 CS01330 SVR dB uA 60 3 5V 60 Vo 2 5V a0 NO LOAD epe 40 gt 50 fosc 400Hz 20 Vo 2 5V 15 VsHon 2V 10 lo 0mA 0 0 0 2 3 4 Vsupu V 50 25 0 25 50 75 Figure 13 Supply voltage rejection vs output Figure 14 Supply voltage rejection vs current 801340 SVR dB 80 60 40 fosc 400Hz Vo 2 5V 20 VsHDN 2V 0 0 50 100 150 200 250 lotmA SVR dB 70 60 50 40 50 20 frequency CS01350 f KHz 87 Doc ID 7362 Rev 16 LK112xx Typical characteristics Figure 15 Supply voltage rejection vs Figure 16 Quiescent current vs temperature temperature CS01360 CS01370 SVR dB la 4A 60 0 20 BE NR NM 0 15 30 0 10 fosc 400Hz V 3 5V Vo 3 8V Vo 2 5V 15 VsHon 2V 0 05 VsHon OV lo 30mA 0 50 25 0 25 50 75 0 50 25 0 25 50 75 C Figure 17 Quiescent current vs input voltage Figure 18 Quiescent current vs shutdown
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12. s Tak Run 1 00MS s Average arar So 1 V 4 8V Vo 3 8V VsHDN 1 8V 15 50 to 100mA Cj 1yF Co 2 2uF Cpyp 1 OnF t t 250ns 4 Doc ID 7362 Rev 16 1147 Package mechanical data LK112xx 6 1247 Package mechanical data 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 Doc ID 7362 Rev 16 ky LK112xx Package mechanical data SOT23 5L mechanical data mm mils Dim A1 A2 T 7 D JI 1 oo 4 re m 88 2 ale 7049676D ky Doc ID 7362 Rev 16 13 17 Package mechanical data LK112xx Tape amp reel SOT23 xL mechanical data N 1 a Po Bo lo b 6 O U Lj Ko Ao 2 P Note Drawing not in scale 14 17 Doc ID 7362 Rev 16 ky LK112xx Order codes 7 Order codes Table 6 Order codes Order codes Output voltages Vour
13. ue on table 2 has been updated 18 Jul 2007 11 Add Table 1 in cover page 21 Sep 2007 12 Features updated 11 Dec 2007 13 Modified Table 6 12 Feb 2008 14 Modified Table 6 on page 15 10 Jul 2008 15 Modified Table 1 on page 1 and Table 6 on page 15 28 Feb 201 1 16 Modified Table 6 on page 15 16 17 Doc ID 7362 Rev 16 4 LK112xx 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 Purchasers are solely responsible for the choice selection and use of the ST products and services described herein and ST assumes no liability whatsoever relating to the choice selection or use of the ST products and services described herein No license express or implied by estoppel or otherwise to any intellectual property rights is granted under this document If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual prop
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ST LK112xx Low noise low drop voltage regulator with shutdown function handbook