The TPS22903 and TPS22904 are ultra-small, low rON single channel load switches with controlled turn on. The device contains a P-channel MOSFET that can operate over an input voltage range of 1.1V to 3.6V. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. In TPS22904, a 85-Ω on-chip load resistor is added for output quick discharge when switch is turned off.
The TPS22903 and TPS22904 are ultra‑small, low‑input‑voltage load switches that integrate a P‑channel MOSFET. They operate from 1.1 V to 3.6 V, provide an on‑state resistance as low as 66 mΩ, and support up to 500 mA continuous switch current. The devices feature a low control‑input threshold, allowing direct interfacing with 1.2‑V, 1.8‑V, 2.5‑V or 3.3‑V logic, and include ESD protection up to 2000 V HBM.
The parts are supplied in a 4‑terminal WCSP (YFP) package with a 0.4 mm pitch, rated for –40 °C to 85 °C operation. Detailed electrical characteristics, typical performance curves, and mechanical dimensions are provided, along with ordering information and recommended operating conditions for designers of PDAs, cell phones, GPS devices, MP3 players, digital cameras, and other portable electronics.
| Input voltage range | 1.1 V to 3.6 V |
|---|---|
| Maximum continuous switch current | 500 mA |
| Shutdown current | < 1 µA |
| Low control‑input threshold | 0.85 V to 3.6 V |
| Package type | 4‑terminal WCSP (YFP) 0.4 mm pitch |
| ESD rating (HBM) | 2000 V |
The devices operate from 1.1 V up to 3.6 V.
Both parts can switch up to 500 mA continuously.
They are rated for 2000 V human‑body model ESD protection.