Maker : National Semiconductor
Part No. : L1087DTX-2.85

  Datasheet PDF : L1087DTX-2.85.pdf
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Product Information

L1087 800mA LM1117/LM1117I 9 Converted to nat2000 DTD Added the industrial grade changed 100849-20 to 100919-41,100849-21 to 100919-42 and 100849-24 to 100919-43 to compose final in documentum Added 1.8 and 2.5 Voltages Edit Table 2/1 increase percent size on fig. 8,10, and 12 updated coding for figures composed for vee by SN. took out TO-263 fixed more edits made by Dong mei and spelling Entered final changes CR fixed package drawing T03B and recomposed. composed on 6/10/98 Duplicate copy of the LT1117 (DS100849) composed by vee on 5/29/98. Also changed all graphic to come to ART2 COME to get good pdf. Input graphics and changed name to LM1117 Added Application Note information shantha composed for vee. latest from Chris. Vee fixed the avo attributes from two-thirds to colwide as the title overprinted. Chris edited the electrical table and avo's and vee fixed the avo attributes and composed on 5/11/98 edit table updated and edited Chris 4/21/98 20001215 NSC Drawing MA04A Transport Media Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel TD03B 2.85V 3.3V 5.0V Top View TO-252 : 2 L1087DTX-ADJ L1087DTX-2.85 DS100919 23900 19970801 800mA Chris Russell LM1117 800mA LM1117I 800mA L1087DTX-3.3 L1087DTX-5.0 Chris to author in sgml Packaging Marking CPU N08A N09A N10A N11A Tape and Reel Tape and Reel : 800mA L1087MPX-ADJ L1087MPX-2.85 L1087DTX-ADJ L1087DTX-2.85 L1087MPX-3.3 L1087MPX-5.0 3 SOT-223 Top View L1087DTX-3.3 L1087DTX-5.0 Maximum Temperature 125 © National Semiconductor Corporation 3-lead SOT-223 L1087 800mA L1087 3-lead TO-252 Package 1 Printed in Japan NSJ 9/2001 2001 L1087 (Note 1) 125 40 VIN ( VOUT ( IOUT ( ) ) ) 2.85V/3.3V/5.0V/ 0.8A 10V ( ) 150 260 VI Symbol VREF VD IS 4.75V 5.75V IO 10mA 0.8A Conditions Min 1.23 25 Full Load 1.20 1.2 0.5 25 1 25 1 25 1 25 0.5 3.45V 1 1 1 55 10 15 10 136 92 10 10 15 100 mV mV mV A mA /W /W 2.5 10 mV 6 mV 6 mV 1.5 2.0 2 V A Typ 1.25 Max 1.27 Units V Parameter Reference Voltage Dropout Voltage Current Limit Line Regulation L1087-ADJ IO 10mA, TA VREF VI 5V 1 , IO L1087-ADJ IO 10mA, TA L1087-2.85 IO 0mA, TA L1087-3.3 IO 0mA, TA L1087-5.0 IO 0mA, TA Load Regulation L1087-ADJ VI 5V, VO L1087-2.85 VI 4.25V L1087-3.3 VI 4.75V L1087-5.0 VI 6.5V IADJ Adjust Current Minimum Load Thermal Resistance Junction to Case Thermal Resistance Junction to Ambient (No heatsink; No Air Flow (Note 2)) L1087-ADJ L1087-ADJ 3 Lead SOT-223 3 Lead TO-252 3-Lead SOT-223 3-Lead TO-252 Note 1: Note 2: IC 0.038in2 http://www.national.com 2 L1087 1.0 1.1 / Figure 2 10 F Rt1 Rt2 VLOAD RLOAD VOUT 1.2 ADJ (CADJ) ADJ CADJ 1/(2 *fRIPPLE*CADJ) R1 100 fRIPPLE=120Hz ADJ 200 CADJ R1 R1 R1 11 F 124 FIGURE 2. Typical Application using Fixed Output Regulator (Figure 3) R1 1.3 ESR( L1087 10 F ESR 5 CADJ (22 F ) 0.5 ) 0.05 R1( 0.05 (1 125 ) R2/R1) 5V 0.05 4 R2 IL 2.0 L1087 VREF R1 IADJ I1 I1 R1 ADJ Figure 1 I1 (60 A) R2 R2 1.25V ADJ FIGURE 3. Best Load Regulation using Adjustable Output Regulator 4.0 L1087 ADJ ADJ FIGURE 1. Basic Adjustable Regulator ADJ 3.0 L1087 ADJ 25V 3 http://www.national.com L1087 ( ) VIN 10A ( 1000 F) Figure 4 20A L1087 FIGURE 5. Cross-sectional view of Integrated Circuit Mounted on a printed circuit board. Note that the case temperature is measured at the point where the leads contact with the mounting pad surface L1087 L1087 0 125 PD IIN PD IL (VIN IG VOUT)I L VINIG Figure 6 FIGURE 4. Regulator with Protection Diode 5.0 FIGURE 6. Power Dissipation Diagram Figure 5 R JC ( ) R CA ( ) ( ) http://www.national.com 4 L1087 ( ) TR(max) JA TR(max) TJ(max) TA(max) (125 PD Figure 9 136 /W TO-252 TO-252 Figure 10 ) TA(max) SOT-223 TO-252 JA TJ(max) TR(max) ( JA) JA JA Table 1 Figure 8 Table 1 JA Figure 7 TR(max)/PD SOT-223 92 /W SOT-223 TO-252 Figure 11 Figure 12 SOT-223 TABLE 1. Layout JA Different Heatsink Area Thermal Resistance 2 Copper Area Top Side (in )*...

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