ATC # ! ! * * * !"#! $$!# *% *& *'()*"#"!*"+$!*"", ', #, - * - - ./ $$ - ', & ', ( "# $$ 0 0 - * ! ! !" ATC ! Vin 3 2 Vout + + 1.25V + CURRENT LIMIT + Thermal Shutdown 1 Adj ! TO263 TO252 FRONT VIEW TO220 FRONT VIEW 3 FRONT VIEW Vin Vin 3 Vout 2 1 2 Vout 3 Vin 2 Vout 1 Adj Adj 1 Tab is Vout Tab is Vout Adj Tab is Vout ! $ % & % # % ' (% % !" ATC ! ! )*+%,% - ................. / % 0 ) .................... # 1 +.................... /234 3* & 5 ........... 4 3* ! " # ,6 & * % % 1 1 % )% * 1 : 1* # $0 * $0 * * + "#$%&&'( 5 )('*'*$' +,*"'&-,*#.*/0 5* "#$%&&'( )('*'*2& #7 $73*,% /%-7 3% #7 ,% /%-7 3% #7 (%8,% /%-8 % % 7%%$7 8#83 #73,%7 9%% 7%%7 % % 7%%$7% #7 % /%7 3%$73* #7 % /%7 3% #7 % /%7 3%$73* % 7%%$7%#7 2*'#*2#('#536*/##&&'*# 2*'#*2#('#536*/##&&'*# 2*'#*2#('#536*/##&&'*# !" ! ( " 3 "# 3 3 3 33 3 1 1 37 !$ % 3" % 2 9 9 ( % 3 ! ! 9 234 234 234 234 234 234 ATC ! 0 ;($1 ),1)&- < 3 3% 0 ;( & % % # < '<# %= 4!/ % 3 0 ;( #&'(( 0 ;( 3%3% < > Vout = Vref (1+ R2/R1) +Iadj *R2 , where Vref = 1.25 typically, Iadj = 55uA typically R1&R2 as shown at below Vin Vout AP1084 Adj Vref R1 Iadj=55uA R2 0 ;(? 3% $ @ ) A 3%B A + A 0 ;( A #$ 33 A'< % 7 7 ) 9 *+(' + 0 ;( / % # / ? B ,' 0 ;( A A ? ' ' "- '.( 0 ;( $ < < $ $ 150oC ? < $ ? * % # 0* % A < (!" ATC ! # 0.20 2. 0 Output Voltage Deviation (%) 1. 8 1. 6 Dropout Voltage (V) 1. 4 1. 2 Tj = 25 oC 1. 0 0. 8 Tj = 125 oC 0. 6 0. 4 0 I load=1.5A -0.20 -0.40 -0.80 0. 2 0 0 1 2 3 -1 5 4 -25 Output Current (A) Dropout Voltage vs Output Current 0 25 50 Temperature (oC) 75 100 125 Load Regulation vs Temperature 2 1 1.5 Output Voltage Deviation (%) Output Voltage Change (%) 0.8 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 Temperature (oC) 75 100 125 150 0.6 0.4 0.2 0 2 6.5 5.5 40 20 0 -20 -40 0 20 40 60 80 100 120 140 160 180 200 TIME (us) Line Transient Response 10 12 Line Regulation Load Current (A) Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage (V) Cin=1uF Cout=10uF Tantalum 8 Input Voltage (V) Percent Change in Output Voltage vs Temperature 7.5 6 4 60 Cin=1uF Cout=10uF Tantalum Preload=100mA 40 20 0 -20 -40 6 4 2 0 0 10 20 30 40 50 60 70 80 90 100 TIME (us) Load Transient Response 3!" ATC ! 6 > C% ,) + - 12*"+$$3 A L2 E L D C2 L3 C /!0* @ @ * * ) = 1 1 1 1 ! ! 2 D D (3 33 3E0 (3 33 ( ; ; (3 @+* 3"3 23 D 3 3 " /!0* * * ) = F 1 1 1 ! ! ;2 D( ( 3 (E0 3 3 ; ; 3 23 D@+* ;@+* " ( G 3 ( 2 ; L e b b2 1"2*"#"$3 A L2 D SEATING PLANE C1 H E b2 L1 SEE NOTE2 b e e1 A1 C &=+> 5=)=*&61#=>&/3@ :#1++6HH=+=)'&0&+##%=*&*:&6#H 2!" ATC 1$2*"",$3 E A /!0* * ) = ' F 5 1 I0 J F L1 D SEATING PLANE Q P L b1 b e e1 ! ( (3 32 ; D D ; 3 D ! D " (3 (3 23 ( 33 " 3 3; 2 3 C J1 "!"