This document summarizes the TPS2041B/TPS2051B series products, introduces the product features and characteristics, including package, pins, working current, application scenarios, etc.
The TPS204xB/TPS205xB family consists of current-limited, power-distribution switches intended for applications with heavy capacitive loads and short circuits. These devices incorporate 70-mΩ N-channel MOSFET power switches controlled by logic enable inputs to manage multiple power sources in a single package.
The internal charge pump design controls rise and fall times to minimize current surges during switching, requiring no external components. The chips feature accurate current limiting, thermal protection, undervoltage lockout, and deglitched fault reporting to ensure safe operation from 2.7 V to 5.5 V supplies.
| Continuous Current Limit | 500 mA |
|---|---|
| On-State Resistance (Typical) | 70 mΩ |
| Operating Voltage Range | 2.7 V to 5.5 V |
| Rise Time (Typical) | 0.6 ms |
| Ambient Temperature Range | -40°C to 85°C |
| Thermal Shutdown Threshold | 135°C |
The typical rise time for the output is 0.6 ms.
No, the internal charge pump requires no external components to control switching times.
The device limits the output current to a safe level by switching into constant-current mode.