LM/-Q1 does not rely on output capacitor ESR An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in. LM Synchronous 1MHz A Step-Down Voltage Regulator from the PowerWise® Family The LM Synchronously Rectified Buck Converter features all. The LM Synchronously Rectified Buck Converter Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Buyers are responsible for their products and applications using TI components. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm and take appropriate remedial actions. Judicious positioning of the PC board within the end product, along with the use of any available air flow forced or natural convection can help reduce the junction temperature.
Reproduction of significant portions of Km3102 information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Information published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or endorsement thereof.
Determine the value of other components C1 and C2: Protection features include output over-voltage protection, thermal shutdown, VCC undervoltage lock-out, gate drive under-voltage lock-out. Lab 6 in this note.
AN LM Demonstration Board
Low ESR also helps ensure a complete recharge during each off-time. A load which creates significant transients requires a larger output capacitor than a fixed load. A nF capacitor is used in this demonstration board. The output capacitor C10, C11 should be connected close to the load and tied directly to the ground plane. In some cases, TI components may datasbeet promoted specifically to facilitate safety-related applications. It must be as neat and compact as possible, and all external components must be as close to their associated pins of the LM datasheeet possible.
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TI is not responsible or liable for any such statements. This user’s guide details the design of a demonstration board which provides a 3. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of Lm31002.
The time is determined from the following equation: C8 should be no smaller than nF for stability, and should be a good quality, low ESR, ceramic capacitor. The design of the demonstration board is detailed below. TI is not responsible or liable for such altered documentation.
Once ILR is selected, L can be determined by: It then drops to zero at turn-off. Documents Flashcards Grammar checker. The exposed pad on the bottom of the LM IC package can be soldered to the ground plane, which should extend out from beneath the LM to help dissipate heat.
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Additionally the use of thick traces, where possible, can help conduct heat away from the LM I wish to measure a very low resistance of the order of an ohm. No TI components are authorized for use in FDA Class III or similar life-critical medical equipment unless authorized officers of the parties have executed a special agreement specifically governing such use. Typical performance and operating waveforms are also provided for reference.
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LM3 Molded Inductor
If the output voltage is higher than 1. Information of third parties may be subject to additional restrictions. How much dattasheet is. The average current during the on-time is the load current. Determine the inductance The main parameter affected by the inductor is the amplitude of the inductor current ripple ILR.
LM3102 PDF Datasheet浏览和下载
A low ESR 0. Except where mandated by applicable law, testing of all datashheet of each component is not necessarily performed. Layout is therefore critical for optimum performance. The function of the input capacitor is to supply most of the main MOSFET current during the on-time, and limit the voltage ripple at the VIN pin, assuming that the datqsheet source feeding to the VIN pin has finite output impedance.
Calculate the on-time datasheeet resistor The switching frequency fSW of the demonstration board is affected by the on-time ton of the LM, which is determined by R1. Experimentation is usually necessary to determine the minimum value for the output capacitor, as the nature of the load may require a larger value.
Calculate the feedback resistors The ratio of the feedback resistors can be calculated from the following equation: