SLVSDZ5A February 2018 – January 2020 TPS2HB50-Q1
PRODUCTION DATA.
The TPS2HB50-Q1 device is designed to provide an enhanced set of diagnostic and protection features. However, if the system design only allows for a limited number of I/O connections, some pins may be considered optional.
PIN NAME | CONNECTION IF NOT USED | IMPACT IF NOT USED |
---|---|---|
SNS | Ground through 1-kΩ resistor | Analog sense is not available. |
LATCH | Float or ground through RPROT resistor | With LATCH unused, the device will auto-retry after a fault. If latched behavior is desired, but the system describes limited I/O, it is possible to use one microcontroller output to control the latch function of several high-side channels. |
ILIM1, ILIM2 | Float | If the ILIMx pin is left floating, the device will be set to the default internal current-limit threshold. |
SEL1 | Float or ground through RPROT resistor | SEL1 selects the TJ sensing feature. With SEL1 unused, only CH1 and CH2 current sensing and open load detection are available. |
SEL2 | Ground through RPROT resistor | With SEL2 = 0 V, CH2 current sensing and CH2 open load detection are not available. |
DIA_EN | Float or ground through RPROT resistor | With DIA_EN unused, the analog sense, open-load, and short-to-battery diagnostics are not available. |
RPROT is used to protect the pins from excess current flow during reverse battery conditions, for more information see the section on Reverse Battery protection.