Hello. The datasheet of TPS613221ADBVR select - Iq in VOUT = 6.5uA. What did it mean? What is the input (Quiescent) current if: Vout=3.3V, Iout=0mA, Vinput=1.5V?
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Hello. The datasheet of TPS613221ADBVR select - Iq in VOUT = 6.5uA. What did it mean? What is the input (Quiescent) current if: Vout=3.3V, Iout=0mA, Vinput=1.5V?
Hi Alex,
Please refer this article about definition of IQ. Thanks!
e2e.ti.com/.../IQ-_2D00_-What-it-is_2C00_-what-it-isn_1920_t_2C00_-and-how-to-use-it.pdf
We measure VOUT IQ through exert an external source on VOUT to make it no switching, VIN is normal, then measure the current into VOUT pin.
-Wenhao
Hi Alex,
You can take the efficiency curve in the datasheet and calculate input current at desired operating point. This can more accurately calculate input current which also takes switching loss into account.
For 1.5Vin, 100uA load, TPS613222A has about 75% efficiency. Therefore the input current is 5*100/1.5/0.75=444.44uA.
-Wenhao