TCA9617A: VCCA and VCCB sequence

Jim Tsai

Part Number: TCA9617A
Other Parts Discussed in Thread: TCA9800, TCA9617B

Hi,

TCA9617 Section 10 (power supply recommendations),

based on my customer system design, if VCCB must rise after VCCA, have any side effect?

0 Clemens Ladisch over 3 years ago

Guru 316860 points

I guess there is a diode between V_CCA and V_CCB, and a current will flow from V_CCA into V_CCB.

If your voltages are not above 3.3 V, consider the TCA9800/1/2/3.

0 Danny Bacic over 3 years ago

Jim,

Clemens is correct in his assessment above. Consider the E2E post below:

Have you considered the TCA9617B?

Best,

Danny

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