The TPS2041A, TPS2042A, TPS2043A, TPS2044A TPS2051A, TPS2052A, TPS2053A, TPS2054A are current limited power distribution switches with an overcurrent logic output. They feature 80 mΩ high side MOSFET switches with 500 mA of continuous current per channel. These devices can be controlled through independent logic enable inputs. The internal charge pump provides control over the power switch rise and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V. When the output load exceeds the current limit threshold or a short is present, these devices will limit the output current to a safe level.
The TPS204xA and TPS205xA series are current‑limited power‑distribution switches that incorporate an 80‑mΩ N‑channel MOSFET high‑side switch, an internal charge pump, and independent enable inputs. They operate from 2.7 V to 5.5 V, provide up to 500 mA continuous current per channel, and include over‑current, thermal and undervoltage protection.
The document lists terminal functions for each device, provides functional block diagrams, and gives package dimensions for SOIC‑D packages. It also contains an important notice about product warranties, safety‑critical use, and licensing. Detailed sections describe the power switch, charge pump, driver, enable logic, over‑current output (OCx), current‑sense, thermal‑sense, and undervoltage lockout circuits.
| Maximum continuous current per channel | 500 mA |
|---|---|
| Operating voltage range | 2.7 V to 5.5 V |
| Typical rise time | 2.5 ms |
| Standby supply current (triple/quad) | < 20 µA |
| On‑state resistance of power switch | 135 mΩ |
| Undervoltage lockout threshold | ≈ 2 V |
| Thermal trip temperature | ≈ 140 °C |
Each channel can handle up to 500 mA continuously.
The switches operate from 2.7 V up to 5.5 V.
The OCx output goes active low (open‑drain) when over‑current or over‑temperature is detected.
The driver rise time is typically about 2.5 ms.