LT1585A-1.5 Datasheet | Linear Technology

LT1585-1.5/LT1585A-1.5 Fixed 1.5V, 4.6A and 5A Low Dropout, Fast Response GTL+ Regulators DESCRIPTIO The LT ®1585-1.5/LT1585A-1.5 are low dropout, 3-terminal regulators with 4.6A and 5A output current capability respectively, and a fixed 1.5V output voltage. The designs are optimized for low voltage applications where transient response and minimum input voltage are critical. Similar to the LT1084, they have lower dropout and faster transient response. These improvements make them ideal for low voltage microprocessor applications, especially as the regulator in an Intel processor GTL+ supply. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any bination of overload that creates excessive junction temperatures. The LT1585-1.5/LT1585A-1.5 are available in the throughhole 3-pin TO-220 power package and 3-pin plastic DD. , LTC and LT are registered trademarks of Linear Technology Corporation. Features s s s s s Fast Transient Response Guaranteed Dropout Voltage at Multiple Currents Load Regulation: 0.05% Typ Trimmed Current Limit On-Chip Thermal Limiting U APPLICATIO S s s s GTL+ Power Supply Low Voltage Logic Supplies Battery-Powered Circuitry TYPICAL APPLICATIO 3.3V LT1585A-1.5 VIN VOUT GND Intel Processor GTL+ Supply VTT = 1.5V 5A C7 TO C12 1µF C3 TO C6 100µF 10V R1 75Ω R2 150Ω R5 100Ω C13 0.1µF R7 100Ω R8 100Ω R6 100Ω VREF R3 75Ω R4 150Ω C14 0.1µF + C1, C2 100µF 10V + VREF Q1 RX NOTE: LTC REMENDS CENTRALLY LOCATING THE LT1585A-1.5 TO MINIMIZE VTT DISTRIBUTION DROPS AND USING SEPARATE VREF GENERATORS AT EACH BUS END Q3 - - - 142 TOTAL SIGNAL LINES RX Q2 TX RX Q4 TX 1585-1.5 - TA01 LT1585-1.5/LT1585A-1.5...