TPS61235P: Quiescent current

Beginner

Part Number: TPS61235P

Based on the latest data sheet, the typ Iq is 5uA.

But based on Figure 4. No Load Supply Current vs Input Voltage, the typ Iq is higher than 5uA. I suspect there is something wrong. Please help to clarify.

over 4 years ago

0 Zack Liu over 4 years ago

TI__Mastermind 34231 points

Hi,

The figure 4 is not Iq curve. It is no load supply current. Iq represents the quiescent current into IC with no switching. Figure 4 is input current with no load but there is still some switching happening.

Please refer to this app note to understand the Iq spec: https://www.ti.com/lit/an/slyt412/slyt412.pdf?ts=1605061503075&ref_url=https%253A%252F%252Fwww.google.com%252F#:~:text=IQ%20measures%20the%20current%20required,or%20other%20logic%20gates%2C%20etc.

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TPS61235P: Quiescent current