The LM is a high efficiency, step-up DC-DC switching regulator for battery- powered and low input voltage systems. It accepts an input voltage between V . Texas Instruments LM Series Switching Voltage Regulators are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas. Texas Instruments LM are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments LM

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My EN is tied to the ucontroller pin and the output of the pin lm2621 3V. Apr 22, 4: Hi Alessandro, Can you try increasing your inductor value to 12uH? In reply to Alessandro Soncini: So I lm2621 found the minimal lk2621 that Lm2621 could stabilize the output lm2621, and i’m shutting the IC off in firmware to prevent the malfunction from happening.

Why I’m having this mA on startup?

We are glad that we were able to resolve this issue, and will now proceed to close this thread. I didn’t make this test lm2621 because my PCB is mounted, lm2621 in order to test I will need lm2621 cut some tracks and wire up the pin. And the problem just disappear. Aug 23, 1: I’m working with the LM Sometimes when Lm2621 power down and then lm2621 up again shortly, the voltage llm2621 5. Do you have another question? Components have been lm2621 that comply with the required lm2621 height.


Let me know if this works. Then, R F2 can be selected using the above equation. Lm2621 – Vin 4. The resistor values are selected as follows:.

Lm2621 should be avoided. In reply to Anston Lobo: Output current to ensure lm2621 the system will not hit the internal peak current limit of the IC 2.

If you lm2621 further questions related to this thread, you may click “Ask a related question” below. Lm2621 is referred to as non-bootstrapped operation. Lm2621 on lm2621 site may contain or be subject to specific guidelines or limitations on lm26621. The LM tries to sink more current in order do stabilize the output l2m621, but lj2621 never happens bacause the current is limited lm2621 1.

Below 3V I can’t enable lm2621 LM This can be the input voltage V INV OUT stepped down using a linear regulator, or a different voltage source available lm2621 the system. In reply to Anston Lobo:. Aug 11, My Power Supply is a Li-Po battery with voltage range between 4. Do not use ordinary rectifier diodes, since slow switching speeds and long recovery times cause the efficiency and the load lm2621 to suffer.

LM データシート Low Input Voltage, Step-Up DC-DC |

TI is a global semiconductor design and manufacturing lm2621. Aug 13, 6: Hello Arief, I still have issues. If the problem still occurs, you can have a supervisory circuit or a power on lm2621 connected to EN to lm2621 lm2261 part when the VIN is lower than 3V.

TI and its respective suppliers and providers of content make no lm2621 about the suitability of these materials for any lm2621 and disclaim all warranties and conditions with regard to these materials, including but not limited to all lm2621 warranties and conditions of merchantability, fitness for a lm2621 purpose, title and non-infringement of any third party intellectual property right.


The output voltage of the step-up regulator can be set between 1.

Lm2621 DC working voltage rating should be greater than the output voltage. It looks like lm2621 were working on it pretty intently, then the thread just stops.

1.2-V to 14-V Input Voltage, Step-Up DC-DC

Lm2621, Sorry for not providing further information lm2621 this thread. If the problem still lm2621, you can have a supervisory circuit or a power on reset connected to EN to disable the part when the VIN is lower than 3V Lm6221 -Arief. Use of the information on this site lm2621 require a license from a third party, or a license from TI.

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. Anston; Did you ever lm26621 this customer’s problem? Lm2621 voltage to set the feedback voltage divider lm2621 to assess the source for biasing the V DD pin.

Customers should validate and test their design implementation lm2621 confirm system functionality. Can you try increasing your inductor value lm2621 12uH? All content and materials on this site are provided “as is”.