Overview
The TPS22918TDBVRQ1 is a single-channel load switch produced by Texas Instruments, designed for automotive and other high-reliability applications. This device features a low on-resistance N-channel MOSFET, which operates over an input voltage range of 1 V to 5.5 V and supports a maximum continuous current of 2 A. It is packaged in a small, leaded SOT-23 (DBV) package, allowing for visual inspection of solder joints. The device is characterized for operation over a wide temperature range of –40°C to +105°C, making it suitable for harsh environments.
The TPS22918TDBVRQ1 includes configurable rise time and quick output discharge (QOD) features, which help in reducing inrush currents and providing design flexibility for power down and sequencing. The integrated control logic, driver, charge pump, and output discharge FET eliminate the need for external components, reducing the solution size and bill of materials (BOM) count.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage (VIN) | - | -0.3 | - | 6 | V |
| Output Voltage (VOUT) | - | -0.3 | - | 6 | V |
| On-Resistance (RON) | VIN = 5 V, IOUT = 2 A | - | 52 | - | mΩ |
| Maximum Continuous Switch Current | - | - | - | 2 | A |
| Quiescent Current (IQ, VIN) | VON = 5 V, IOUT = 0 A, VIN = 5.5 V | 8.7 | 16 | - | µA |
| Turnon Time (tON) | RL = 10 Ω, CIN = 1 µF, COUT = 0.1 µF, CT = 1000 pF | - | 1950 | - | µs |
| Turnoff Time (tOFF) | RL = 10 Ω, CIN = 1 µF, COUT = 0.1 µF, CT = 1000 pF | - | 2 | - | µs |
| Operating Temperature Range | - | -40 | - | 105 | °C |
Key Features
- AEC-Q100 Qualified: Suitable for automotive applications with a temperature grade 2 rating.
- Integrated Single-Channel Load Switch: Features a low on-resistance N-channel MOSFET.
- Configurable Rise Time: Reduces inrush currents and power supply droop.
- Quick Output Discharge (QOD): Configurable discharge rate of VOUT once the switch is disabled.
- Low Quiescent Current: Minimizes power consumption during standby.
- Low-Control Input Threshold: Compatible with 1 V or higher GPIO signals.
- Small SOT23-6 Package: Allows for visual inspection of solder joints and reduces solution size.
- Functional Safety Capable: Documentation available to aid in functional safety system design.
- ESD Performance: Tested per AEC Q100 standards with ±2-kV HBM and ±750-V CDM.
Applications
- Automotive Electronics: Suitable for various automotive systems due to its AEC-Q100 qualification.
- Infotainment Systems: Used in audio, video, and navigation systems.
- Cluster and Instrumentation: Applied in dashboard and instrument cluster systems.
- Advanced Driver Assistance Systems (ADAS): Used in safety and driver assistance systems.
Q & A
- What is the input voltage range of the TPS22918TDBVRQ1?
The input voltage range is from 1 V to 5.5 V.
- What is the maximum continuous switch current of the TPS22918TDBVRQ1?
The maximum continuous switch current is 2 A.
- What is the typical on-resistance of the TPS22918TDBVRQ1 at VIN = 5 V?
The typical on-resistance is 52 mΩ.
- How is the rise time of the TPS22918TDBVRQ1 configured?
The rise time is configured using the CT pin.
- What are the options for configuring the Quick Output Discharge (QOD) pin?
The QOD pin can be configured by placing an external resistor between VOUT and QOD, tying QOD directly to VOUT using the internal resistor value (RPD), or disabling QOD by leaving the pin disconnected.
- What is the operating temperature range of the TPS22918TDBVRQ1?
The operating temperature range is from –40°C to +105°C.
- Is the TPS22918TDBVRQ1 suitable for automotive applications?
Yes, it is AEC-Q100 qualified and suitable for automotive applications.
- What is the package type of the TPS22918TDBVRQ1?
The device is packaged in a 6-pin SOT-23 (DBV) package.
- How does the TPS22918TDBVRQ1 reduce power supply droop?
The device reduces power supply droop through its configurable rise time, which minimizes inrush currents caused by large bulk load capacitances.
- What are the ESD performance ratings of the TPS22918TDBVRQ1?
The device is tested per AEC Q100 standards with ±2-kV HBM and ±750-V CDM.
