TMUX7462F datasheet(31/37 Pages) TI

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10 Power Supply Recommendations

The TMUX7462F operates across a wide supply range of ±5 V to ±22 V (8 V to 44 V in single-supply mode).

The device also performs well with asymmetrical supplies such as VDD = 12 V and VSS= –5 V. For improved

supply noise immunity, use a supply decoupling capacitor ranging from 1 µF to 10 µF at the VDD and VSS pins to

ground. Always ensure the ground (GND) connection is established before supplies are ramped.

The fault supplies (VFP and VFN) provide the current required to operate the fault protection, and thus, must be

low impedance supplies. They can be derived from the primary supplies by using a resistor divider and buffer

or be an independent supply rail. The fault supplies must not exceed the primary supplies as it might cause

unexpected behavior of the switch. Use a supply decoupling capacitor ranging from 1 µF to 10 µF at the VFP and

VFN pins to ground for improved supply noise immunity.

The positive supply, VDD, must be ramped before the positive fault rail, VFP, for proper power sequencing of the

TMUX7462F. Similarly, the negative supply, VSS, must be ramped before the negative fault voltage rail, VFN.

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TMUX7462F

SCDS394A – MARCH 2021 – REVISED OCTOBER 2021

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TMUX7462F 데이터시트(PDF) 31 Page - Texas Instruments