ZHCSP75A July 2022 – December 2022 TPS1HC30-Q1
PRODUCTION DATA
| PIN | TYPE | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | GND | Power | Ground of device. Connect to resistor-diode ground network to have reverse battery protection. |
| 2 | EN | I | Input control for channel activation, internal pulldown |
| 3 | DIAG_EN | I | Enable-disable pin for diagnostics, internal pulldown |
| 4 | FAULT | O | Open-drain global fault output. Referred to FAULT, FLT, or fault pin. |
| 5 | LATCH | I | Thermal shutdown behavior, latch-off or auto-retry, internal pulldown |
| 6 | SNS | O | Output corresponding sense value based on sense ratio |
| 7 | ILIM | O | Adjustable current limit. Short to ground or leave floating if external current limit is not used. |
| 8, 11, 14 | NC | N/A | No internal connection |
| 9, 10 | VOUT | Power | Output of high-side switch, connected to load |
| 12, 13 | VBB | Power | Power supply |
| Thermal Pad | Pad | — | Thermal Pad, internally shorted to ground |
Recommended Connection for Unused Pins
The TPS1HC30-Q1 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 can be considered as 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 auto-retries 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. |
| ILIM | Float | If the ILIM pin is left floating, the device is set to the default internal current-limit threshold. This impact is considered a fault state for the device. |
| 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. |