Part Number: LMR61428 I'm an old-school developer with mostly linear-regulator experience and am looking for tips on picking the right 'boost' switching regulator for a specific project. It needs to take +5V in, either from a wall-wart or a battery, and…
Part Number: LMR61428 Other Parts Discussed in Thread: LMR62014 I have an operating issue that is not covered by the datasheet. I have a variable 7 to 12V in and needs 13.2V out. What current can I expect out?
The LMR61428 should be rated for 2.8A, but…
Part Number: LMR61428 Dear sir ,
I am not able to achieve boot strap operation in sample circuit mentioned in you detail document-SNVS815 on page no. 2& 12. But I m getting good result of boot strap in evaluation module i purchased from TI company.…
Part Number: LMR61428 Hi all Would you mind if we ask LMR61428? In case of light load, does LMR61428 operate PFM function? Is it possible to use as fixed PWM function? Kind regards, Hirotaka Matsumoto
Other Parts Discussed in Thread: LMR61428LMR61428 Schematic.pdf LMR61428 Startup Waveforms.zip As attached are the related layout and schematic. The input voltage range of LMR61428 is 3.5V to 6V, and the output voltage is set as 8V by the resistor…
Other Parts Discussed in Thread: LMR61428 Hi all Would you mind if we ask LMR61428? The datasheet shows the following; While tantalum chip capacitors are recommended for the input and output filter capacitors, ceramic caps can also be used. Is it possible…
Hi Tom,
LMR61428 can be used in this application, because its control scheme uses a hysteresis window to regulate the output voltage. When the output voltage is below the upper threshold of the window, the LMR61428 switches continuously with a fixed duty…
Other Parts Discussed in Thread: LMR61428 Hi all Would you mind if we ask LMR61428? Our customer's condioton is as follows; -Vin=3.5V -Vout=4.2V -Iout=1.2A Our customer would like to calculate Maximum Fsw. However we could not find Minimum on time or Minimum…
Other Parts Discussed in Thread: LMR61428 , LMR61428XMMEVM Sir I purchased LMR61428 IC and LMR61428 Evaluation Module LMR61428XMMEVM , When I assembled the LMR61428 IC Circuit on PCB I am getting Vout ==3.3 times of Vinput.
But in Evaluation module I am getting…
Hi Matt,
LMR61428 is suitable as well, but out of stock. There are not many options, because input voltage is low to 1.8V and output current is not very small.