ZHCSC61B March 2014 – September 2020 TPS2556-Q1 , TPS2557-Q1
PRODUCTION DATA
| TERMINAL | I/O | DESCRIPTION | ||
|---|---|---|---|---|
| NAME | TPS2556-Q1 | TPS2557-Q1 | ||
| EN | 4 | – | I | Enable input, logic low turns on power switch. |
| EN | – | 4 | I | Enable input, logic high turns on power switch. |
| GND | 1 | 1 | – | Ground connection; connect externally to PowerPAD. |
| IN | 2, 3 | 2, 3 | I | Input voltage; connect a 0.1 μF or greater ceramic capacitor from IN to GND as close to the IC as possible. |
| FAULT | 8 | 8 | O | Active-low open-drain output, asserted during overcurrent or overtemperature conditions. |
| OUT | 6, 7 | 6, 7 | O | Power-switch output. |
| ILIM | 5 | 5 | O | External resistor used to set current-limit threshold; recommended 20 kΩ ≤ R(ILIM) ≤ 187 kΩ. |
| Thermal pad | – | – | – | Internally connected to GND; used to heat-sink the part to the circuit board traces. Connect therma pad to GND terminal externally. |