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LT1587CM Datasheet(PDF) 1 Page - Linear Technology |
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LT1587CM Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page 1 LT1584/LT1585/LT1587 158457a APPLICATIO S FEATURES TYPICAL APPLICATIO DESCRIPTIO 7A, 4.6A, 3A Low Dropout Fast Response Positive Regulators Adjustable and Fixed NOTE: MICROPROCESSOR APPLICATIONS WITH LOAD TRANSIENTS OF 3.8A REQUIRE OUTPUT DECOUPLING CAPACITANCE > 1300 µF ON FIXED VOLTAGE PARTS TO ACHIEVE < 50mV OF DEVIATION FROM NOMINAL OUTPUT. CONSULT FACTORY FOR DETAILS The LT ®1584/LT1585/LT1587 are low dropout three- terminal regulators with 7A, 4.6A and 3A output current capability, respectively. Design has been optimized for low voltage applications where transient response and mini- mum input voltage are critical. Similar to the LT1083/4/5 family, it has lower dropout voltage and faster transient response. These improvements make it ideal for low volt- age microprocessor applications requiring a regulated 2.5V to 3.6V output with an input supply below 7V. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal lim- iting provides protection against any combination of over- load that would create excessive junction temperatures. The LT1585/LT1587 are available in both the through-hole and surface mount versions of the industry standard 3-pin TO-220 power package. The LT1584 is available in the through-hole 3-pin TO-220 power package. s Fast Transient Response s Guaranteed Dropout Voltage at Multiple Currents s Load Regulation: 0.05% Typical s Trimmed Current Limit s On-Chip Thermal Limiting s Standard 3-Pin Power Package s Pentium TM Processor Supplies s PowerPC TM Supplies s Other 2.5V to 3.6V Microprocessor Supplies s Low Voltage Logic Supplies s Battery-Powered Circuitry s Post Regulator for Switching Supply LT1585/7CM, LT1584/5/7CT Adjustable LT1585/7CM-3.3, LT1584/5/7CT-3.3 3.3V Fixed LT1585CM-3.38, LT1584/5CT-3.38 3.38V Fixed LT1585/7CM-3.45, LT1584/5/7CT-3.45 3.45V Fixed LT1585/7CM-3.6, LT1584/5/7CT-3.6 3.6V Fixed , LTC and LT are registered trademarks of Linear Technology Corporation. Pentium is a trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation. 3.3V, 7A, 4.6A, 3A Regulator LT1584-3.3 LT1585-3.3 LT1587-3.3 VIN ≥ 4.75V 1585 TA01 C1 10 µF * REQUIRED FOR STABILITY LT1584: C2 = 22 µF, LT1585/LT1587: C2 = 10 µF 3.3V 7A, 4.6A, 3A C2* SOLID TANTALUM + + OUTPUT CURRENT (A) 0 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 1585 TA02 IFULL LOAD Dropout Voltage vs Output Current |
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