ZHCSHG3B november 2017 – july 2020 TPS254900A-Q1
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| BIAS | 12 | PWR | Used for IEC protection. Typically, connect a 2.2-µF capacitor and a transient-voltage suppressor (TVS) to ground and 5.1 kΩ to OUT. |
| CS | 6 | O | Linear cable compensation current. Connect to divider resistor of front-end dc-dc converter. |
| CTL1 | 8 | I | Logic-level control input for controlling the charging mode and the signal switches; see the Device Truth Table (TT). |
| CTL2 | 9 | I | Logic-level control input for controlling the charging mode and the signal switches; see the Device Truth Table (TT). |
| DM_IN | 14 | I/O | D– data line to downstream connector |
| DM_OUT | 4 | I/O | D– data line to upstream USB host controller |
| DP_IN | 13 | I/O | D+ data line to downstream connector |
| DP_OUT | 5 | I/O | D+ data line to upstream USB host controller |
| EN | 7 | I | Logic-level control input for turning the power and signal switches on or off. When EN is low, the device is disabled, and the signal and power switches are OFF. |
| FAULT | 18 | O | Active-low, open-drain output, asserted during overtemperature, overcurrent, and overvoltage conditions. |
| GND | 11 | — | Ground connection; should be connected externally to the thermal pad. |
| ILIM_HI | 20 | I | External resistor used to set the high current-limit threshold. |
| ILIM_LO | 19 | I | External resistor used to set the low current-limit threshold and the load-detection current threshold. |
| IMON | 1 | O | This pin sources a scaled-down ratio of current through the internal FET. A resistor from this pin to GND converts current to proportional voltage; used as an analog current monitor. |
| IN | 2,3 | PWR | Input supply voltage; connect a 0.1-µF or greater ceramic capacitor from IN to GND as close to the IC as possible. |
| OUT | 15,16 | PWR | Power-switch output |
| OVP_SEL | 10 | I | Logic-level control input for choosing the OUT overvoltage threshold. When OVP_SEL is low, V(OV_OUT_LOW) is active. When OVP_SEL is high, V(OV_OUT_HIGH) is active. |
| STATUS | 17 | O | Active-low open-drain output, asserted in load-detect conditions |
| Thermal pad | — | — | Thermal pad on the bottom of the package |