Overview
The TPS22929DDBVR from Texas Instruments is an ultra-small, low on-resistance load switch designed for a wide range of applications. This device features a P-channel MOSFET that can operate over an input voltage range of 1.4 V to 5.5 V, making it versatile for various power management needs. The TPS22929D is packaged in a small SOT23-6 package, which is ideal for space-constrained designs. It is characterized for operation over a free-air temperature range of –40°C to 85°C, ensuring reliability in diverse environmental conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.4 to 5.5 | V |
| On-Resistance (rON) | 115 mΩ at VIN = 5 V, 118 mΩ at VIN = 3.3 V, 129 mΩ at VIN = 1.5 V | mΩ |
| Continuous Switch Current | 1.8 A at 25°C | A |
| Maximum Junction Temperature | 125 | °C |
| Operating Free-Air Temperature Range | –40 to 85 | °C |
| Turn-ON Time | 3315 ns (typ) at VIN = 5 V, TA = 25°C | ns |
| Turn-OFF Time | 7.4 μs (typ) at VIN = 5 V, TA = 25°C | μs |
| Output Discharge Time | 10 μs (typ) | μs |
| Package Type | SOT23-6 |
Key Features
- Integrated Single Load Switch: Controlled turn-on to avoid inrush current.
- Low On-Resistance: rON = 115 mΩ at VIN = 5 V, rON = 118 mΩ at VIN = 3.3 V, and rON = 129 mΩ at VIN = 1.5 V.
- Small SOT23-6 Package: Ideal for space-constrained designs.
- Wide Input Voltage Range: Operates from 1.4 V to 5.5 V.
- High Continuous Switch Current: Up to 1.8 A at 25°C.
- Quick Output Discharge: 150-Ω on-chip load resistor for quick output discharge when the switch is turned off.
- Reverse Current Protection: Disables the switch and body diode when VOUT exceeds VIN by the reverse current voltage threshold.
- Under-Voltage Lock Out (UVLO): Turns off the switch if the input voltage drops below the UVLO threshold.
- Controlled Slew-Rate: Internally controlled rise time to minimize inrush current.
Applications
- Portable Industrial Equipment: Suitable for power management in handheld industrial devices.
- Portable Medical Equipment: Used in medical devices that require reliable power switching.
- Portable Media Players: Ideal for power management in portable media devices.
- Point Of Sales Terminals: Used in POS systems for efficient power switching.
- GPS Devices: Suitable for GPS devices requiring low on-resistance load switches.
- Digital Cameras: Used in digital cameras for power management.
- Portable Instrumentation Devices: Ideal for various portable instrumentation applications.
- Smartphones: Used in smartphones for efficient power management.
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 typical on-resistance of the TPS22929D at 5 V input voltage?
The typical on-resistance at 5 V input voltage is 115 mΩ.
- What is the maximum continuous switch current of the TPS22929D at 25°C?
The maximum continuous switch current at 25°C is 1.8 A.
- What type of package does the TPS22929D come in?
The TPS22929D comes in a SOT23-6 package.
- Does the TPS22929D have reverse current protection?
Yes, the TPS22929D has reverse current protection that disables the switch and body diode when VOUT exceeds VIN by the reverse current voltage threshold.
- What is the purpose of the under-voltage lockout (UVLO) feature?
The UVLO feature turns off the switch if the input voltage drops below the UVLO threshold to prevent operation under low voltage conditions.
- How does the TPS22929D manage inrush current?
The TPS22929D manages inrush current through its internally controlled rise time, which minimizes the inrush current during switch turn-on.
- What is the typical turn-on time of the TPS22929D at 5 V input voltage?
The typical turn-on time at 5 V input voltage is 3315 ns.
- What is the typical output discharge time of the TPS22929D?
The typical output discharge time is 10 μs.
- Is the TPS22929D suitable for high-temperature applications?
Yes, the TPS22929D is characterized for operation over a free-air temperature range of –40°C to 85°C.
