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EZ158xCM-X.XTRT Datasheet(PDF) 5 Page - Semtech Corporation |
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EZ158xCM-X.XTRT Datasheet(HTML) 5 Page - Semtech Corporation |
5 / 6 page 5 2005 Semtech Corp. www.semtech.com POWER MANAGEMENT EZ1580/EZ1581 EZ1582/EZ1583 The EZ158X is a low dropout regulator designed to power low voltage microcontrollers, graphics ICs, sound cards etc. The dropout voltage is minimized by utilizing a separate input voltage, V CTL, which should exceed VOUT by at least 1.3V. The 2.5V (for example) power for the load can be derived from a 3.3V system supply. Since the efficiency of a linear regulator is the ratio of the output to the input voltage, heat dissipation is reduced by using a 3.3V input (versus a 5V one), thereby lowering heatsink and cooling Applications Information fan costs. For lower current applications, the heatsink might be eliminated altogether. For a load of 7A at 2.5V, the regulator would dissipate 17.5W when converting from 5V, but only 5.6W from a 3.3V input. Remote Kelvin sensing of the output voltage can be achieved by connecting the sense pin to the output at the load. Remote sensing will reduce errors associated with resistive trace losses between regulator and processor. Outline Drawing - TO-263-5 Outline Drawing - TO-220-5 e H1 L A2 D1 D PLANE SEATING D2 Ø P DIMENSIONS INCHES NOM E1 aaa ccc bbb ØP Q N H1 L E2 e DIM b D1 D2 E c D A A2 A1 MIN MILLIMETERS MAX MIN MAX NOM E E/2 A1 A Q E2 c E1 5X b .140 .031 0.80 - - - - - - - - - - - - - - - - - 0.36 .014 0.38 .015 0.25 .010 3.56 .067 BSC 5 .380 .355 .025 5 9.02 1.70 BSC .420 9.65 .041 0.63 10.66 1.04 8.38 .330 .100 - .500 .014 - .080 .020 - - - .120 2.54 - 3.05 - .580 .024 12.70 0.36 .190 .115 .055 0.51 2.03 0.61 14.73 - 1.40 4.82 2.92 - - DIMENSIONS "D" AND "E" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. CONTROLLING DIMENSIONS ARE IN INCHES. NOTES: 1. 2. 14.22 .650 .560 - 16.51 - .480 12.88 12.19 .507 A bbb B A C aaa B A B ccc B A 6.86 .270 .350 8.90 .030 0.76 6.86 5.84 .270 .230 .139 .156 3.53 - 3.96 .067 BSC DETAIL 5 A .326 .020 - 5 A 1.70 BSC .380 8.28 .039 0.51 9.65 0.99 - - .070 .015 - .000 - - 15 - 15 .110 .029 1.78 0.38 .190 .010 0.00 0.74 2.79 - 0.25 4.83 - - DIMENSIONS "D" AND "E" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. CONTROLLING DIMENSIONS ARE IN INCHES (ANGLES IN DEGREES). NOTES: 1. 2. SIDE VIEW e 1.14 .065 .045 - 1.65 - -- 80 8 0 .245 6.22 12 3 5 4 A aaa BA PLANE SEATING B .380 10.67 9.65 .420 -- - - 1.68 .066 4.06 .160 - - - - - - - - - - 0.25 .010 - - .270 -- 6.86 -- PLATED COPPER HEAT SPREADER aaa N 01 0 D1 H L1 L e E1 E c D c1 b A1 A DIM MILLIMETERS INCHES DIMENSIONS MIN NOM MAX MIN MAX NOM b X N (L1) E1 D1 A1 A 0 E E/2 L1 D 01 L SEE DETAIL c1 c H .575 - .625 14.61 - 15.88 |
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