LM27262MTDX National Semiconductor, LM27262MTDX Datasheet
LM27262MTDX
Related parts for LM27262MTDX
LM27262MTDX Summary of contents
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... VID-code programmable output voltage range of 0.8375V through 1.6000V Pentium ™ trademark of Intel Corporation. © 2005 National Semiconductor Corporation n User programmable, low loss, load line slope n User programmable Standard VID offset n User programmable VCORE slew rate n 5V power rail Under Voltage Lock Out (UVLO) ...
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Typical Application Circuit FIGURE 1. 2 20083401 ...
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... Connection Diagrams Top View 48-Lead TSSOP (MTD) Order Number LM27262MTD See NS Package Number MTD48 Ordering Information Order Number LM27262MTD LM27262MTDX LM27262LQ LM27262LQX NS Package Number LQA48B 20083402 Package Drawing MTD48 MTD48 LQA48B LQA48B 3 Top View 48-Lead LLP Order Number LM27262LQ Supplied As 38 Units/Rail ...
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Pin Description (All pin numbers referred to here correspond to the TSSOP/ LLP package) Pin 1/44, PHASES: tri-level logic input: HIGH logic level switches controller into 2-phase operation mode, phases A and C active. LOW logic level activates 3-phase operation, ...
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Processor Pins (0 = low high) VID5 VID4 VID3 VID2 VID1 ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications PHASES, IREF, VSTDOS, VPROG, SLADJ1, SLADJ2, VREF, REFINT, CLIMADJ, VCORE, COMP, VFB, VILx, VIHx, SOFTCAP, PWRGD, VIDPGD, VID0-VID5, VRON -0. Differential Voltage (VILx – ...
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Electrical Characteristics Symbol Parameter DAC Voltage Accuracy VID codes from 1.5625V to 1.6000V with Internal VREF VID codes from 0.8375V to 1.1000V VID codes from 1.1125V to 1.5500V DAC Voltage Accuracy VID codes: 1.5500V & 1.6000V with External VREF = ...
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Electrical Characteristics Symbol Parameter Error Amp Input Offset VDAC = 1.3V Voltage Error Amplifier Open VFB = 1.3V, Comp Pin open loop DC Gain OSCILLATOR Active Mode Switching Frequency Minimum On-Time Maximum Duty Cycle SOFT START AND SOFT STOP (SOFTCAP), ...
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... The Absolute Maximum power dissipation should be de-rated by 12.5mW per ˚C above 25˚C ambient. The LM27262 actively limits its junction temperature to about 165˚C. Note 3: For detailed information on soldering plastic small-outline packages, refer to the Packaging Databook available from National Semiconductor Corporation. Note 4: For testing purposes, ESD was applied using the human-body model, a 100pF capacitor discharged through a 1.5kΩ resistor. ...
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www.national.com 10 ...
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Typical Performance Characteristics LM27262 Efficiency vs I Soft-Start Soft-Stop CORE CORE 20083405 20083407 20083409 11 LM27262 CORE CORE 20083406 Soft-Start 20083408 Soft-Stop 30A CORE 20083410 www.national.com ...
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Typical Performance Characteristics Load Transient 24A to 75A Load Transient 24A to 75A to 24A V vs Temperature DAC External Ref, DAC Trim www.national.com (Continued) 20083413 Over Current Protection Threshold vs Temperature 20083415 @ 1.325V External Ref, DAC Trim 20083417 ...
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Typical Performance Characteristics External V vs Temperature (LM27201) REF Switching Frequency Percent Change vs Temperature (Continued) V DAC Internal Ref, DAC Trim 20083419 Pin I REF 20083421 13 vs Temperature @ 1.325V 20083420 Voltage vs Temperature 20083422 www.national.com ...
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... Due to the required precision of the VRD-10 specification, the LM27262 was designed with the ability to use an external precision reference. Since National Semiconductor’s preci- sion 0.2% accurate voltage references have a 1.225V typical output voltage, the LM27262 has a 10mV internal offset switched in when REFINT selects an external reference ...
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Operation Descriptions be recalculated as 1.4V / 1.74kΩ = 80.46mA. Using a stan- dard 309Ω, 1% value for the offset resistor produces a nominal offset voltage of 24.86mV for an error of 0.14mV. LOAD LINE SLOPE The Load Line Slope ...
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Operation Descriptions SOFTSTART-RAMP CORE SOFTCAP 0.5V/V VIDPGD SOFTSTART-RAMP TURN-ON VIDPGD CORE SOFTCAP I = 3.2µA and Volt, Amp and Farad units are used. SOFTCAP For example: ...
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Component Selection Since VRD-10 designs must support large load transients while maintaining very tight output regulation, a good place to start the design is the output capacitors. OUTPUT CAPACITOR SELECTION For designs that will be subjected to large load current ...
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Component Selection V = 1.526V MAX There will also be an initial step equal to ∆I in our example will be approximately 41mV. The two effects are not entirely additive since the voltage across the ESR is decreasing as the ...
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Component Selection Since and the capacitor will be charged to 5V, the minimum capacitance required is 0.06µF. A 0.1µF would be a good choice. In some instances, it’s desirable to add small resistors between the ...
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Layout Considerations www.national.com (Continued) FIGURE 8. Power Path Layout 20 20083428 ...
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Physical Dimensions inches (millimeters) unless otherwise noted 48-Lead LLP Package Order Number LM27262LQ NS Package Number LQA48B 48-Lead TSSOP Package Order Number LM27262MTD NS Package Number MTD48 21 www.national.com ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...
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