Part Number: TPS61041-Q1
Hi all,
Iq is on the data sheet.(P.5)
However, VFB is 1.3 V and it is in no switching operation.
I want to know the average current of current consumption.
When Iout=0mA ,what is the current consumption?
Best Regards Koji Hayashi
What is the input voltage and output voltage in your applicaiton?
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Best Regards,Helen
In reply to Helen chen:
In reply to Koji Hayashi:
The no load current under this input and output voltage range is around 0.6-1mA.
Yes. It is tested from EVM.
Hi Helen,
Thank you for your quick response.
When my customer checked following conditions, it was 68uA
Vin=4.6V,Vout=18,Temp=25C,Iout=0mA
Is your EVM the same value?
Hi Koji Hayashi,
When Vin=4.6V, Vo=18V, Io=0mA, and the VFB not pull high to 1.3V, the no load input current is around 1mA-1.1mA.
When Vin=4.6V, Io=0mA, and the VFB is pulled high to 1.3V (no switching), the quiescent current is about 68-70uA.
Did they remove the feedback resistor when they test the quicesent current? The right way to measure this current is remove the upside and low side feedback resistor. add a 1.3V volatge at the FB pin to make the converter no switching. Thus, the tested value is about 25uA in my EVM board.
My previous testing result 68uA is because I didn't remove the feedback resistor. But quicesent current means the current only consumed by the IC. so the feedback resistor must be removed.
Note: the data in Fig.5 is the typical value. Acturally, there exists lot by lot difference. which is show in the table on page 5. 28-50uA at Vin=2.4V.
If the customer want to use very low Iq IC, I suggest TPS61093. its maximum Vo can be 17V.