Overview
The TPS22917DBVT is a 1 V to 5.5 V, 2 A, 80 mΩ ultra-low leakage load switch produced by Texas Instruments. This device is designed to minimize power loss and is particularly useful in applications requiring low voltage drop and high current handling. The TPS22917DBVT features a low resistance P-channel MOSFET, which reduces the dropout voltage across the device, making it suitable for low voltage and high current rails. It is available in a 6-pin SOT-23 package, allowing for visual inspection of solder joints and compact design integration.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Operating Voltage (VIN) | 1 | - | 5.5 | V |
| Maximum Continuous Current (IMAX) | - | - | 2 | A |
| On-Resistance (RON) | - | 80 | - | mΩ |
| Activation Current (IRCB) | - | -500 | -1 | mA |
| Reverse Leakage Current (IIN,RCB) | - | - | 1 | µA |
| Turn-On Time (tON) | 100 | - | 400 | µs |
| Turn-Off Time (tOFF) | 10 | - | - | µs |
| Output Fall Time (tFALL) | 22 | - | 72 | µs/ms |
| Junction-to-Ambient Thermal Resistance (θJA) | - | - | 183 | °C/W |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Low On-Resistance: The device features a typical on-resistance of 80 mΩ, reducing power loss and voltage drop across the switch.
- Configurable Slew Rate: The rise and fall times can be independently adjusted using external components, allowing for system-level optimizations and reducing inrush current.
- Quick Output Discharge (QOD): The QOD pin allows for the configuration of the discharge rate of VOUT after the switch is disabled, ensuring controlled output fall times.
- Smart Pulldown: A Smart Pulldown feature keeps the ON pin from floating until system sequencing is complete, preventing unnecessary power loss.
- Low Leakage Currents: The device has very low leakage currents during shutdown, reducing unnecessary power consumption in downstream modules.
- Compact Package: Available in a 6-pin SOT-23 package, which is suitable for compact design and visual inspection of solder joints.
- Wide Operating Voltage Range: Operates over a voltage range of 1 V to 5.5 V, making it versatile for various applications.
Applications
- Industrial Systems: Suitable for power management in industrial control systems and automation.
- Set Top Box: Used in set-top boxes for efficient power distribution and management.
- Blood Glucose Meters: Ideal for medical devices such as blood glucose meters due to its low power consumption and high reliability.
- Electronic Point of Sale (POS): Used in POS systems to manage power efficiently and reduce downtime.
Q & A
- What is the input operating voltage range of the TPS22917DBVT?
The input operating voltage range is from 1 V to 5.5 V.
- What is the maximum continuous current rating of the TPS22917DBVT?
The maximum continuous current rating is 2 A.
- What is the typical on-resistance of the TPS22917DBVT?
The typical on-resistance is 80 mΩ.
- How can the slew rate be adjusted in the TPS22917DBVT?
The slew rate can be adjusted using an external capacitor connected to the CT pin.
- What is the purpose of the QOD pin in the TPS22917DBVT?
The QOD pin allows for the configuration of the output discharge rate after the switch is disabled.
- What is the Smart Pulldown feature in the TPS22917DBVT?
The Smart Pulldown feature keeps the ON pin from floating until system sequencing is complete to prevent unnecessary power loss.
- What is the operating temperature range of the TPS22917DBVT?
The operating temperature range is from -40°C to 125°C.
- What package type is the TPS22917DBVT available in?
The device is available in a 6-pin SOT-23 package.
- What are some typical applications of the TPS22917DBVT?
Typical applications include industrial systems, set-top boxes, blood glucose meters, and electronic point of sale systems.
- How does the TPS22917DBVT reduce power loss?
The device reduces power loss through its low on-resistance P-channel MOSFET and configurable slew rate.
