Part Number: LM2937-3.3 I am using the LM2937ES-3.3 in my pcba. I get 5V all the way to the input pin when at output the regulator drops to 1.5V. If I lift the output leg and measure voltage I get about 4V. Is there a way to read the regulator off the…
Hi Chitharanjan, To use the internal RSET, you would need to keep the REXT bit of Control Register as 0. If you are using an external resistor, set the REXT bit to 1. For a SMT LDO for 24 V - 15 V, the LM2937 may be suitable. The 15 V version is the LM2937ESX…
Doing a stability evaluation of the LM2937-15 LDO Regulator. with reference to a TI Application Note "Stability analysis of low-dropout linear regulators with PMOS pass element" from August 1999, I am looking for the following values:
Reference…
Other Parts Discussed in Thread: LM2937 The datasheet for LM2937 gives that the max Tj for sot223 is 85C while for the other packages it is 125C. Is this a fault in the datasheet or is there a reason that it is lower for the sot223? Isn't it the same chip…
Other Parts Discussed in Thread: LM2937 Please present LM2937 Graph
Device: LM2937ESX-12/NOPB or LM2937ESX-5.0/NOPB
Graph:Output current vs. Ambient Temperature
Hello All,
I am working on design where i am converting 15 V DC to 5V DC max current requirement is 300mA. i am using LM2937-5.
Can you please guide me how to calculate value of Cin and Cout ( input/output capacitor) for my requirement. as shown in fig…
Hello All,
I am working on design where i am converting 15 V DC to 5V DC max current requirement is 300mA. i am using LM2937-5.
Can you please guide me how to calculate value of Cin and Cout ( input/output capacitor) for my requirement. as shown in fig…
Yes, TI could add a higher value for Vcc.
The real world measured efficiency of a Webench LM2743 + LM2937 DC power supply at 6.0A load is: 90.90% .
Note: Replacing the expensive Murata GRM32ER61E226KE15L ceramic capacitor for C in and C outreg with a TDK …
Hello All,
I am working on design where i am converting 15 V DC to 5V DC max current requirement is 300mA. i am using LM2937-5.
Can you please guide me how to calculate value of Cin and Cout ( input/output capacitor) for my requirement. as shown in fig…