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TPS22904: Is there any way to deal with "negative supply voltage, integrated load switches" problem
Part Number: TPS22904
Is the pinout indicated in the datasheets for the two subject parts (TPS22904 and TPS22902B) correct (i.e. mirrored)? If so, I am looking for a 22904 pin-compatible part with a slower slew-rate. Any options?
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The TPS22904 is one of our older load switches, the only devices that we have that are P2P with this device are the TPS22901 and TPS22902. The TPS22901 / 2 do have a slower slew rate than the TPS22904 (40us @ 1.8V or 220us @ 1.8V).
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In reply to Alpha H:
Arthur, Thank you for your response. I am looking at these two datasheets: www.ti.com/.../tps22902.pdf and www.ti.com/.../tps22904.pdf According to page 3 on both, the pinouts do not match: Ball A1 on the 22904 is Vin, while on the 22901/2/2B ball A1 is Vout. In addition, only the 22902B has a 220us slew rate. From searching through over a half-dozen TI parts and a few from other manufacturers, it appears that the TPS22904/3 is a one-off part: all of the other load switches I have found use the same pinout as the TPS22901/2/2B. Can you verify if this is the case?
In reply to Henry Lehmann:
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