unisonic technologies co., ltd lr1107/e cmos ic www.unisonic.com.tw 1 of 6 copyright ? 2012 unisonic technologies co., ltd qw-r102-033.h 600m a fast ultra low dropout linear regulator ? description the utc lr1107/e operate from a +2.5v ~ +7.0v input supply as fast ultra low-dropout linear regu lators. wide output voltage range options are available. the fast re sponse characteristic to make utc lr1107/e suitable for low voltage microprocessor application. the low quiescent current operation and lo w dropout quality caused by the cmos process. the utc lr1107/e has ultra low dropout voltage; 300mv at 600ma load current typically. the ground pin current is typically 200ua at 1ma load current. set/adj mode (for lr1107): connect an external resistive voltage-divider from v out to this pin to set the output voltage from 1.145v to 5v. error flag (for lr1107e): when the output voltage drops 10% below nominal value error flag goes low. output voltage precision: multiple output voltage options are available and ranging from 1.2v ~ 5.0v at room temperature with a guaranteed accuracy of 1.5%, and 3.0% when varying line, load and temperature. ? features * ultra low dropout voltage * low ground pin current * 0.68% load regulation * the guaranteed output current is 600ma dc * output voltage accuracy 1.5% * error flag indicates output status * v out can be adjusted from 1.145v to 5v. * low output capacitor required * overtemperature protection and overcurrent protection ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 3 4 5 lr1107l-xx-aa3-a-r lr1107g -xx-aa3-a-r sot-223 g o i - - tape reel LR1107L-XX-AE3-3-R lr1107g -xx-ae3-3-r sot-23 o g i - - tape reel lr1107l-xx-ab3-c-r lr1107g -xx-ab3-c-r sot-89 g i o - - tape reel lr1107l-xx-ab3-d-r lr1107g -xx-ab3-d-r sot-89 i g o - - tape reel lr1107l-xx-af5-r lr1107g-xx-af5-r sot-25 i g sd s o tape reel lr1107el-xx-af5-r lr1107eg-xx-af5-r sot-25 i g sd e o tape reel note: pin assignment: i:v in o:v out g:gnd sd: sd e: error s set/adj
lr1107/e cmos ic unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r102-033.h ? marking information package voltage code marking sot-223 15 :1.5v 18:1.8v 25:2.5v 28:2.8v 2j:2.85v 33:3.3v lr1107 xx date code voltage code l: lead free g: halogen free 123 pin code sot-23 esxx voltage code l: lead free g: halogen free 3 21 sot-25 3 2 1 esxx 5 4 voltage code l: lead free g: halogen free sot-89 xx lr1107 date code voltage code l: lead free g: halogen free 123 pin code ? pin configuration gnd v out v in error sd 1 23 4 5 gnd v out v in set/adj sd 1 23 4 5 sot-25 (for lr1107e) sot-25 (for lr1107) sot-23 ? pin description pin name i/o description v in input supply gnd ground sd i shutdown lr1107/e enable; when the sd pin connects to gnd will shutdown the lr1107/e ; at normal operation, sd must be tied to v dd through a 10k ? pull up resistor. error (for lr1107e) o error flag, active low; when the output dropout of regulation due to low input voltage, the lr1107e produces a logic low signal at the error pin. set/adj (for lr1107) o voltage-setting input. connect an external resistive voltage-divider from v out to this pin to set the output voltage. v out o output voltage
lr1107/e cmos ic unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r102-033.h ? block diagram v in sd v out set/adj gnd lr1107 80mv
lr1107/e cmos ic unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r102-033.h ? absolute maximum ratings (note 1) parameter symbol ratings unit input voltage (operating), (note 10) v in 2.5~7.0 v input voltage (survival) -0.3~+7.5 v shutdown input voltage v i ( shdn ) -0.3~v in +0.3 v output voltage (survival), (note 4, 5) v out -0.3~+7.5 v i out (survival) short circuit protected maximum voltage for error , set/adj pin v in +0.3 v maximum operating current (dc) 600 ma power dissipation (note 2) p d internally limited junction temperature t j 150 c operating temperature t opr -40~+125 c storage temperature t stg -65~+150 c ? electrical characteristics limits in standard typeface are for t j = 25c, and limits in boldface type apply over the full operating temperature range. (t j = 25c, v in = v o(nom) + 1v, i l = 10 ma, c out = 22 f, v sd = v in -0.3v, unless otherwise specified.) parameter symbol test conditions min typ (note 3) max unit output voltage tolerance (note 6) v out 0 ma i l 600ma v out +1 v in 7.0v -1.5 -3 0 +1.5 +3 % output voltage line regulation (note 6) out out v v v out +1v lr1107/e cmos ic unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r102-033.h ? electrical characteristics(cont.) parameter symbol test conditions min typ (note 3) max unit error flag comparator (for lr1107e) error flag saturation v ef(sat) i sink = 100 a 0.02 0.1 v error flag pin leakage current i i(leak) 1 na threshold v t (note 7) 5 7 16 % threshold hysteresis v thr (note 7) 2 4.2 8 % flag reset delay t d 17 s set/adj mode (for lr1107 5pins) set voltage v set measured on adj, i out =10ma 1.110 1.145 1.188 v ac parameters ripple rejection psrr v in = v out + 1.5v c out =100uf, v out = 3.3v 60 db v in = v out + 0.3v c out =100uf, v out = 3.3v 40 db output noise density n ( l/f ) f = 120hz 0.8 v output noise voltage en bw = 10hz ? 100khz 150 vrms note 1. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device operation is not implied. conditions for which the device is intended to be functional is in dicated by operating ratings , but specific performance limits isn?t be guaranteed. to make sure of specifications and test condition s, read electrical characteristics. only for the test conditions list ed the guaranteed specifications can be applied. when the device is not operated under the listed test conditions some performance characteristics may degrade. 2. devices must be derated based on package t hermal resistance at elevated temperatures. 3. the most likely parametri c norm represents at 25c. 4. the lr1107/e output must be diode- clamped to ground. if used in a dual-supply system where the regulator load is returned to a negative supply. 5. between the v in and v out terminals the output pmos structure contains a diod e. this diode is reverse biased normally. if the voltage at the output terminal is forced to be higher than the voltage at the input terminal this diode will get forward biased. this diod e can withstand 650ma of peak current and 120ma of dc current typically. 6. output voltage line regulation is t he change in output voltage from the nom inal value which is due to change in the input line voltage. which is defined as the change in output voltage from the nominal value due to change in load current is output volt age load regulation. the load regulation and line regulation specification include the typical number only. but, the limits for load and line regulation are included in the output voltage tolerance specification. 7. error flag hysteresis and threshold are specifie d as regulated output voltage?s percentage. 8. at which the output drops 2% below the normal value dropout vo ltage is defined as the minimum input to output differential voltage. only to out put voltages of 2.5v and above drop out voltage specif ication applies. for output voltages below 2.5v, since the minimum input voltage is 2.5v, the drop- out voltage is nothing but the input to output differential. 9. specification has been tested at ? 40c t j 85c cause under shutdown condit ions the temperature rise of the device is negligible. 10. the minimum operating v in value is equal to v out(nom) + v dropout ] or 2.5v, just the greater.
lr1107/e cmos ic unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r102-033.h ? typical application circuit utc lr1107e v in gnd v out input 3.3v10% c in 1f c out 22f error v out 2.5v, 500ma error (note) (note) sd sd note: sd and error pins must be pulled high through a 10k ? pull-up resistor. connect the error pin to ground if this function is not used. utc lr1107 v in gnd v out input 3.3v10% c in 1f c out 22f set/adj v out 2.5v, 500ma (note) sd sd note: sd pins must be pulled high through a 10k ? pull-up resistor. connect the set/adj pin to ground if this function is not used. utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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