DatasheetsPDF.com

US1261 Dataheets PDF



Part Number US1261
Manufacturers UNISEM
Logo UNISEM
Description DUAL 6A AND 1A LOW DROPOUT POSITIVE FIXED OUTPUT REGULATOR
Datasheet US1261 DatasheetUS1261 Datasheet (PDF)

US1261 DUAL 6A AND 1A LOW DROPOUT POSITIVE FIXED OUTPUT REGULATOR FEATURES Guaranteed to provide 1.5V and 2.5V Supplies with 3.1V input. Fast Transient Response 1% Voltage Reference Initial Accuracy Built in Thermal Shutdown DESCRIPTION The US1261 product using a proprietary process combines a dual low dropout regulators with fixed outputs of 1.5V and 2.5V in a single package with the 1.5V output having a minimum of 6A and the 2.5V having a 1A output current capability. This product is specific.

  US1261   US1261


Document
US1261 DUAL 6A AND 1A LOW DROPOUT POSITIVE FIXED OUTPUT REGULATOR FEATURES Guaranteed to provide 1.5V and 2.5V Supplies with 3.1V input. Fast Transient Response 1% Voltage Reference Initial Accuracy Built in Thermal Shutdown DESCRIPTION The US1261 product using a proprietary process combines a dual low dropout regulators with fixed outputs of 1.5V and 2.5V in a single package with the 1.5V output having a minimum of 6A and the 2.5V having a 1A output current capability. This product is specifically designed to provide well regulated supplies from 3.3V to generate 1.5V for GTL+ termination resistor supply and 2.5V clock supply for the new generation of the Pentium II processor applications. APPLICATIONS Pentium II Processor Applications TYPICAL APPLICATION 3.3V C1 Vout1 Vin 5 4 3 2 1 C4 C2 C3 2.5V / 1A US1261 Gnd Vout2 Vctrl 1.5V / 6A 1261app1-1.3 5V R1 Typical application of US1261 in a Pentium II processor application PACKAGE ORDER INFORMATION Tj (°C) 0 TO 150 5 PIN PLASTIC TO220(T) US1261CT 5 PIN PLASTIC TO263(M) US1261CM 5 PIN PLASTIC POWER FLEX(P) US1261CP Rev. 1.7 3/22/99 3-1 US1261 ABSOLUTE MAXIMUM RATINGS Input Voltage (Vin) ............................................................. 10V Power Dissipation ............................................ Internally Limited Storage Temperature Range ................................ -65°C TO 150°C Operating Junction Temperature Range ...................... 0°C TO 150°C PACKAGE INFORMATION 7 PIN PLASTIC TO220 FRONT VIEW 5 4 3 2 1 7 PIN PLASTIC TO263 FRONT VIEW 5 4 3 2 1 7 PIN POWER FLEX (P) FRONT VIEW 5 4 3 2 1 Vout1 Vin Gnd Vout2 Vctrl Vout1 Vin Gnd Vout2 Vctrl Vout1 Vin Gnd Vout2 Vctrl θJT =2.7°C/W θJA =60°C/W θJA =30°C/W for 1"sq pad θJA =30°C/W for 1"sq pad ELECTRICAL SPECIFICATIONS Unless otherwise specified ,these specifications apply over ,Cin=1 uF,Cout=100uF,and Tj=0 to 150°C.Typical values refer to Tj=25°C. Ifl=6A for output #2 & 1A for output #1.Vctrl=5V,Vin=3.3V. PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS Vctrl Input Voltage 3.0 V Output Voltage #2 Vo2 Io=10mA, Tj=25°C 1.485 1.500 1.515 V Io=10mA 1.470 1.500 1.530 Output Voltage #1 Vo1 Io=10mA, Tj=25°C 2.462 2.500 2.537 V Io=10mA 2.425 2.500 2.575 Line Regulation Io=10mA, 3.1V


US1260 US1261 US15


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)