LT1581-2.5 Linear Technology, LT1581-2.5 Datasheet
LT1581-2.5
Related parts for LT1581-2.5
LT1581-2.5 Summary of contents
Page 1
... Pentium is a registered trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation. 0.8 2.5V/10A 0.7 + 100 F TANT 0.6 AVX TPS 7 0.5 0.4 0.3 0.2 1581 TA01 0 LT1581/LT1581-2.5 10A, Very Low U Dropout Voltage – Minimum Power Voltage INDICATES GUARANTEED TEST POINTS DATA SHEET LIMIT T = 125 ...
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... CONTROL V CONTROL Line Regulation: LT1581-2.5 V CONTROL LT1581 V CONTROL Load Regulation: LT1581-2.5 V CONTROL LT1581 (V = 0V) V ADJ CONTROL Minimum Load Current: LT1581 V CONTROL Control Pin Current: LT1581-2.5 V CONTROL (Note 5) V CONTROL V CONTROL V CONTROL Control Pin Current: LT1581 V CONTROL (Note 5) V CONTROL V CONTROL V CONTROL Ground Pin Current: LT1581-2 ...
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... ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Dropout Voltage (Note 3) Minimum V : LT1581-2.5 V CONTROL POWER (V – CONTROL OUT POWER V POWER V POWER V POWER Minimum V : LT1581 V CONTROL POWER (V – CONTROL OUT POWER (V = 0V) V ADJ POWER V POWER V POWER Minimum V : LT1581-2.5 ...
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... T = 125 OUTPUT CURRENT (A) 1581 G02 LT1581-2.5 Output Voltage vs Temperature 2.512 2.509 2.506 2.503 2.500 2.497 2.494 2.491 2.488 –50 – 100 125 150 TEMPERATURE ( C) 1581 G05 OUTPUT (Pin 4): This is the power output of the device. ...
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... The LT1581 has improved frequency compensation which permits the use of capacitors with very low ESR. This is critical in addressing the needs of modern, low voltage, compared to BE high speed microprocessors. Current generation micro- LT1581/LT1581-2.5 POWER + – OUTPUT 1581 BD pin is 13V. The maximum CONTROL pin is limited to 7V ...
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... LT1581/LT1581-2 APPLICATIONS INFORMATION processors cycle load current from several hundred mil- liamperes to several amperes in tens of nanoseconds. Output voltage tolerances are tighter and include transient response as part of the specification. The LT1581 is designed to meet the fast current load step requirements of these microprocessors and saves total cost by needing less output capacitance to maintain regulation ...
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... LT1581. are not eliminated. P Modern microprocessors generate large high frequency current transients. The load current step contains higher order frequency components that the output coupling LT1581/LT1581-2 ...
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... LT1581/LT1581-2 APPLICATIONS INFORMATION network must handle until the regulator throttles to the load current level. Capacitors are not ideal elements and contain parasitic resistance and inductance. These para- sitic elements dominate the change in output voltage at the beginning of a transient load step change. The ESR of the output capacitors produces an instantaneous step in output voltage ( V = I)(ESR) ...
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... The power in the device is made up of two main compo- nents: the power in the output transistor and the power in the drive circuit. The additional power in the control circuit is negligible. The power in the drive circuit will be equal to: P DRIVE LT1581/LT1581-2 – V )(I ) CONTROL OUT ...
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... LT1581/LT1581-2 APPLICATIONS INFORMATION where I is equal to between I CONTROL I /58 (max). OUT function of output current. A curve of CONTROL can be found in the Typical Performance CONTROL OUT Characteristics curves. The power in the output transistor is equal to – V )(I OUTPUT POWER OUT OUT ...
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... LT1581/LT1581-2 25V MICROPROCESSOR 2 10 SOCKET V SS 1581 TA03 0.165 – ...
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... LT1581/LT1581-2.5 U TYPICAL APPLICATION Dual Regulators Power Pentium Processor or Upgrade CPU R12 0.0075 * 5V R1 10k R10 10k 12V 22 F R13 0.005 * + + C9 C2 220 F 220 F 10V 10V *RESISTORS ARE IMPLEMENTED AS COPPER TRACES ON PCB COPPER, TRACE WIDTHS ARE 0.05 INCH COPPER, TRACE WIDTHS ARE 0.025 INCH R13 IS 0 ...