Overview
The TPS22919DCKR is a 5.5-V, 1.5-A load switch manufactured by Texas Instruments. This device is designed to handle power management tasks efficiently within electronic devices. It features a small, single-channel load switch with a controlled slew rate, containing an N-channel MOSFET that operates over an input voltage range of 1.6 V to 5.5 V and supports a maximum continuous current of 1.5 A. The switch is controlled by a digital input capable of interfacing directly with low-voltage control signals and includes a Smart Pull Down to prevent unnecessary power loss during system sequencing.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOT-SC70 (DCK) with 6 pins |
| Operating Temperature Range | -40°C to 105°C |
| Input Operating Voltage Range (VIN) | 1.6 V to 5.5 V |
| Maximum Continuous Current (IMAX) | 1.5 A |
| On-Resistance (RON) | 89 mΩ (typical at 5 V), 90 mΩ (typical at 3.6 V), 105 mΩ (typical at 1.8 V) |
| Output Short Protection (ISC) | 3 A (typical) |
| Low Power Consumption | ON state: 8 µA (typical), OFF state: 2 nA (typical) |
| Turn ON Time (tON) | 1.95 ms at 5 V, 1.75 ms at 3.6 V, 1.5 ms at 1.8 V |
| Adjustable Output Discharge | Internal QOD resistance = 24 Ω (typical) |
Key Features
- Controlled slew rate to reduce inrush current and power supply droop.
- Smart Pull Down on the ON pin to prevent floating and unnecessary power loss during system sequencing.
- Self-protected against short circuit events and thermal overload with thermal shutdown.
- Low on-resistance (RON) of 90 mΩ to minimize voltage drop.
- Adjustable output discharge and fall time through the QOD pin.
- Low power consumption in both ON and OFF states.
Applications
- Consumer Electronics: Smartphones, tablets, and wearables can benefit from its compact size and power management capabilities.
- Industrial Automation: Suitable for control units and sensors in automated production lines due to its robust operating temperature range and built-in protections.
- Computing and Data Storage: Servers and storage systems can use this part for managing power distribution to different components, especially in tightly packed configurations.
- Smart Cities: Infrastructure components like smart meters and sensors can implement this load switch for efficient power management and space-saving benefits.
- Electronic Manufacturing: Production equipment can integrate this load switch to protect critical components from power surges and ensure precise control over the power supplied.
Q & A
- What is the input operating voltage range of the TPS22919DCKR?
The input operating voltage range is 1.6 V to 5.5 V.
- What is the maximum continuous current supported by the TPS22919DCKR?
The maximum continuous current is 1.5 A.
- What is the typical on-resistance of the TPS22919DCKR at 5 V input voltage?
The typical on-resistance at 5 V input voltage is 89 mΩ.
- Does the TPS22919DCKR have built-in protection features?
Yes, it has self-protection against short circuit events and thermal overload with thermal shutdown.
- How does the Smart Pull Down feature work on the TPS22919DCKR?
The Smart Pull Down keeps the ON pin from floating until system sequencing is complete and disconnects once the pin is deliberately driven high to prevent unnecessary power loss.
- What is the purpose of the adjustable output discharge feature?
The adjustable output discharge feature allows for a controlled power-down sequence, reducing the chances of damaging sensitive electronic components.
- What is the operating temperature range of the TPS22919DCKR?
The operating temperature range is -40°C to 105°C).
- What are some common applications of the TPS22919DCKR?
Common applications include consumer electronics, industrial automation, computing and data storage, smart cities, and electronic manufacturing).
- How does the TPS22919DCKR manage inrush current?
The device has a slow slew rate to reduce or eliminate power supply droop due to large inrush currents).
- What is the typical power consumption in the ON and OFF states of the TPS22919DCKR?
The typical power consumption is 8 µA in the ON state and 2 nA in the OFF state).
