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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Nonetheless, such components are subject to these terms. Additionally the use of thick traces, where possible, can help conduct heat away from the LM Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support that may be provided by TI.

Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. For a worst case calculation, the input capacitor must be capable of supplying this average load current during the maximum on-time. 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.

A nF capacitor is used in this demonstration board. Vias should be added to connect the ground of the input capacitors to a ground plane, located as close to the capacitor as possible.

LM Datasheet(PDF) – National Semiconductor (TI)

The inductor L1 should be connected close to the SW pin with as short a trace as possible to reduce the potential for EMI electromagnetic interference generation. 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. Information of third parties may be subject to additional restrictions.


Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Lab 6 in this note. Datawheet is not responsible or liable for any such statements.

AN-1646 LM3102 Demonstration Board

This user’s guide details the design of a demonstration board which provides a 3. The average current during the on-time is the load current. The datasheeet of the demonstration board is detailed below. A low ESR 0. I wish to measure a very low dwtasheet of the order of an ohm. The capacitor at the SS pin determines the soft-start time, that is, the time for the reference voltage at the regulation comparator and the output voltage to reach their final value.

The demonstration board schematic, PCB layout, Bill of Materials, and circuit design descriptions are shown. If the output voltage is higher than 1.

TI does not warrant or represent that any license, either express or implied, datazheet granted under any patent right, copyright, mask work right, or other intellectual property right relating to any combination, machine, or process in which TI components or services are used.

Layout is therefore critical for optimum performance. Except where datashest by applicable law, testing of all parameters of each component is not necessarily performed. The operating frequency remains constant with line variations due to the inverse relationship between the input voltage and the on-time.

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. How much energy is. The bootstrap capacitor C4 should be connected as close to the SW and BST pins as possible, and the connecting traces datasheft be thick. To ensure that the on-time is larger than the minimum limit, which is ns, the value of R1 must satisfy the following equation: Reproduction of significant portions of TI 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.


Using numerous vias to connect the die attached pad to the ground plane is a good practice.

LM3 Molded Inductor

It must be as neat and compact as possible, and all external components must be as close to their datasheey pins of the LM as possible. Documents Flashcards Grammar checker. Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service voids all express and any implied warranties for the associated TI lm302 or service and is an unfair and deceptive business practice.

It then drops to zero at turn-off. No TI components are authorized for use in FDA Class III or similar life-critical medical equipment unless authorized officers of ratasheet parties have executed a special agreement specifically governing such use.

Calculate the feedback resistors The ratio of the feedback resistors can be calculated from the following equation: TI is not responsible or liable for such altered documentation.

LM 데이터시트(PDF) – TI store

The exposed pad is internally connected to the LM IC substrate. Determine the value of other components C1 and C2: Buyer acknowledges and agrees that any military or aerospace use of TI components which have not been so designated is solely at the Buyer’s risk, and that Buyer is solely responsible for compliance with all legal and regulatory requirements in connection with such use.

Low ESR also helps ensure a complete recharge during each off-time. Products Applications Audio www.