Overview
The TPS22929DDBVT is an ultra-small, low on-resistance load switch produced by Texas Instruments. This device is designed to provide a controlled turn-on feature, making it suitable for a wide range of applications where power management and low on-resistance are critical. The TPS22929D is housed in a small SOT23-6 package, measuring 2.90 mm × 1.60 mm, and is characterized for operation over a temperature range of –40°C to 85°C. The device is currently in a lifetime-buy period and is not recommended for new designs, but it remains available to support existing customers.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Input Voltage Range (VIN) | 1.4 | 5.5 | V |
| Output Voltage Range (VOUT) | –0.3 | 6 | V |
| On-Resistance (rON) at VIN = 5 V | 115 | mΩ | |
| On-Resistance (rON) at VIN = 3.3 V | 115 | mΩ | |
| On-Resistance (rON) at VIN = 2.5 V | 118 | mΩ | |
| On-Resistance (rON) at VIN = 1.5 V | 129 | mΩ | |
| Continuous Switch Current (IOUT) at 25°C | 1.8 | A | |
| Maximum Junction Temperature (TJ) | 125 | °C | |
| Operating Free-Air Temperature Range (TA) | –40 | 85 | °C |
| Turn-ON Time (tON) at VIN = 5 V, TA = 25°C | 3315 | ns | |
| Turn-OFF Time (tOFF) at VIN = 5 V, TA = 25°C | 7.4 | μs |
Key Features
- Integrated single load switch with controlled turn-on.
- Small SOT23-6 package.
- Input voltage range: 1.4 V to 5.5 V.
- Low on-resistance: 115 mΩ at VIN = 5 V, 115 mΩ at VIN = 3.3 V, 118 mΩ at VIN = 2.5 V, and 129 mΩ at VIN = 1.5 V.
- 1.8-A continuous switch current at 25°C.
- Controlled slew-rate to avoid inrush current.
- Quick output discharge (10 µs typ) when the switch is turned off.
- Reverse current protection and under-voltage lockout (UVLO) protection.
- Internal 150-Ω on-chip load resistor for quick output discharge.
Applications
- Portable industrial equipment.
- Portable medical equipment.
- Portable media players.
- Point of sales terminals.
- GPS devices.
- Digital cameras.
- Portable instrumentation devices.
- Smartphones.
Q & A
- What is the input voltage range of the TPS22929D?
The input voltage range of the TPS22929D is from 1.4 V to 5.5 V.
- What is the on-resistance of the TPS22929D at different input voltages?
The on-resistance is 115 mΩ at VIN = 5 V, 115 mΩ at VIN = 3.3 V, 118 mΩ at VIN = 2.5 V, and 129 mΩ at VIN = 1.5 V.
- What is the maximum continuous switch current of the TPS22929D at 25°C?
The maximum continuous switch current is 1.8 A at 25°C.
- What are the key protection features of the TPS22929D?
The device features reverse current protection, under-voltage lockout (UVLO) protection, and quick output discharge when the switch is turned off.
- How does the TPS22929D manage inrush current?
The TPS22929D has a controlled slew-rate to avoid inrush current, and it is recommended to use an input capacitor to minimize the effects of inrush currents during startup.
- What is the typical turn-on and turn-off time of the TPS22929D?
The typical turn-on time is 3315 ns, and the typical turn-off time is 7.4 µs at VIN = 5 V and TA = 25°C.
- What is the operating temperature range of the TPS22929D?
The operating free-air temperature range is from –40°C to 85°C.
- What package type is the TPS22929D available in?
The TPS22929D is available in a small SOT23-6 package.
- Is the TPS22929D recommended for new designs?
No, the TPS22929D is not recommended for new designs; it is currently in a lifetime-buy period to support existing customers.
- What are some common applications of the TPS22929D?
Common applications include portable industrial equipment, portable medical equipment, portable media players, point of sales terminals, GPS devices, digital cameras, portable instrumentation devices, and smartphones.
