LMR36015FSCEVM: current consumption of LMR36015FSCQRNXRQ1

Kindly find the below circuit for ref,

PG is connected to 1.8V. also let me know why it's consuming more power.

Hello Basavaraj,

The power-good output consists of an open drain NMOS and requiring an external pullup resistor(1k-10k) to 1.8V.

This can help reduce consuming power.

Thanks

Colin

even though with 10k resister pullup, it consuming the same power of 30 mA.

Hi Sir,

How do you measure this current?

Colin

Hi Colin Chen,

We are measuring with series connection of DMM6500.

Thanks for your immediate reply. 

Hello,

The PG consists a N mos and on-resistance is 80ohm typically,

So I=1.8V/(80ohm+10kohm)=0.18mA.

Please calibrate your ammeter, thanks.

Colin

Hi Team,

It is not resolved.

Hello,

Have you  calibrated your ammeter?

Also you can send us full schematic for further check. Thanks!

Colin

Overall this circuit is consuming 30mA, not only PG. let me know the why it is consuming this much power.

hello,

Does this data tested on no load condition? What is your Vin,Vout and Iout?

Thanks

Colin

Hi Colin,

Yes it is checked without load condition and the Vin= 12V, Vout= 6V , Iout= 1A.

Hello,

LMR36015F is forced PWM version which means that it has low efficiency in no load or light load.

Please choose auto version like below and it would consume less current at light load. 

Thanks

Colin