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LX8584-00 Datasheet(PDF) 1 Page - Microsemi Corporation |
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LX8584-00 Datasheet(HTML) 1 Page - Microsemi Corporation |
1 / 7 page DESCRIPTION KEY FEA TURES s s s s s THREE-TERMINAL ADJUSTABLE OR FIXED OUTPUT s s s s s GUARANTEED 1% VOLTAGE ACCURACY OVER TEMPERATURE (LX8584B) s s s s s GUARANTEED ≤≤≤≤≤ 1.2V HEADROOM AT 7A (LX8584A) s s s s s GUARANTEED ≤≤≤≤≤ 1.4V HEADROOM AT 7A (LX8584/84B) s s s s s OUTPUT CURRENT OF 7A p FAST TRANSIENT RESPONSE p 1% VOLTAGE REFERENCE INITIAL ACCURACY p OUTPUT SHORT CIRCUIT PROTECTION p BUILT-IN THERMAL SHUTDOWN s EVALUATION BOARD AVAILABLE: REQUEST LXE9001 EVALUATION KIT The LX8584/84A/84B series ICs are low drop- out three-terminal positive regulators with a nominal 7A output current. This product family is ideally suited for Pentium® Proces- sor and Power PCTM applications requiring fast transient response. The LX8584A isguar- anteed to have < 1.2V at 7A and the LX8584/84B < 1.4V at 7A dropout voltage, making them ideal to provide well regulated outputs of 2.5V to 3.6V using a 5V input supply. In addition, the LX8584B also of- fers ±1% maximum voltage reference ac- curacy over temperature. Fixed versions are also available and are specified in the Available Options table below. Current limit is trimmed above 7.1A to ensure adequate output current and con- trolled short-circuit current. On-chip ther- mal limiting provides protection against any combination of overload that would create excessive junction temperatures. The LX8584/84A series products are avail- able in both the through-hole versions of the industry standard 3-pin TO-220 and TO-247 power packages. The LX1431 Programmable Reference in conjunction with the LX8584 7A LDO prod- ucts offer precision output voltage (see ap- plication below) and are ideal for use in VRE applications. APPLICA TIONS s PENTIUM PROCESSOR SUPPLIES s POWER PC SUPPLIES s MICROPROCESSOR SUPPLIES s LOW VOLTAGE LOGIC SUPPLIES s POST REGULATOR FOR SWITCHING SUPPLY 7A L OW D ROPOUT P OSITIVE R EGULA TORS P RODUCTION D AT A S HEET T HE I NFINITE P OWER OF I NNOV A TION Copyright © 1997 Rev. 1.2 4/97 FOR FUR THER INFORMA TION CALL (714) 898-8121 11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841 LX8584-xx/8584A-xx/8584B-xx LIN D OC #: 8584 1 PRODUCT HIGHLIGHT Thick traces represent high current traces which must be low resistance / low inductance in order to achieve good transient response. Output Current - (A) 1.0 0 1.75 3.5 5.25 0.5 1.5 7 T J = 125°C LX8584/84A LX8584 LX8584A D ROPOUT VOLTAGE VS. O UTPUT C URRENT µP Load 100µF x 6 10V AVX TYPE TPS 1µF x 10 SMD 1k 0.1% 2.84k W 0.1% COL V+ V+ V+ SGND FGND REF LX1431 V IN V OUT ADJ 1k W 1k W 0.01µF 3x 330µF, 6.3V Low ESR Oscon Type from Sanyo 2 3 1 6 5 8 1 3 0.1µF 50V 220µF 10V Low ESR from Sanyo 5V PLACE IN µP SOCKET CAVITY LX8584A V O 7A (See Table Below) 2 250pF 21k 1% JP1 P ACKAGE ORDER INFORMA TION T A (°C) Plastic TO-220 3-pin P Plastic TO-247 3-terminal V 1.4V LX8584-xxCP LX8584-xxCV 0 to 125 LX8584B-xxCP LX8584B-xxCV 1.2V LX8584A-xxCP LX8584A-xxCV Dropout Voltage THE APPLICATION OF THE LX8584A & LX1431 IN A 75 & 166MHZ P54C PROCESSORS USING 3.3V CACHE V OUT JP1 TYPICAL APPLICATION 3.50 Short 120/166MHz, VRE, 3.3V Cache 3.38 Open 75/90/100/133MHz, STND, 3.3V Cache LX8584/A/B-00 Adjustable LX8584/A/B-33 3.3V Part # Output Voltage AVAILABLE O PTIONS PER PART # Other voltage options may be available — Please contact factory for details. "xx" refers to output voltage, please see table above. |
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