Overview
The TDE1708DFT is an Integrated Power Switch developed by STMicroelectronics, designed to handle power supply capabilities up to 48V. This device is particularly suited for applications involving proximity detectors and can be configured in either high side or low side switch modes. It features an internal +5V regulated auxiliary voltage that can be used to supply external circuits, making it versatile for various industrial applications. The TDE1708DFT includes multiple protection mechanisms such as overload and short circuit protections, thermal shutdown, and supply and output reversal protection, ensuring reliable operation under various conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 6 to 48 | V |
| Output Current | Up to 250 | mA |
| Output Voltage Drop | 1 to 1.5 | V |
| Short Circuit Current (Low Side) | 0.3 to 0.6 | A |
| Short Circuit Current (High Side) | 0.25 to 0.4 | A |
| Internal Voltage Clamp | 55 to 70 | V |
| Thermal Shutdown Temperature | 180 | °C |
| Quiescent Current | 1.5 | mA |
| Regulated Output Voltage | 4.5 to 5.5 | V |
| Input Voltage Threshold | 2 to 3 | V |
| Input Threshold Hysteresis | 300 | mV |
| Propagation Turn On/Off Time | 15 | μs |
Key Features
- Low side or high side switch configuration
- 6V to 48V supply voltage range
- Overload and short circuit protections
- Internal voltage clamping
- Supply and output reversal protection
- Thermal shutdown
- GND and VS open wire protection
- Adjustable delay at switch on
- Indicator status LED driver
- +5V regulated auxiliary voltage
- High burst immunity
Applications
The TDE1708DFT is especially dedicated to proximity detectors but can be used in a variety of industrial applications. It is suitable for driving resistive or inductive loads and can be integrated into systems requiring robust power switching and protection features.
- Proximity detectors
- Industrial automation
- Power distribution systems
- Automotive systems (non-critical applications)
Q & A
- What is the maximum supply voltage for the TDE1708DFT?
The maximum supply voltage for the TDE1708DFT is 48V.
- What are the possible output configurations for the TDE1708DFT?
The TDE1708DFT can be configured in either high side or low side switch modes.
- What protection mechanisms are included in the TDE1708DFT?
The device includes overload and short circuit protections, thermal shutdown, supply and output reversal protection, and GND and VS open wire protection.
- How can the delay at switch on be adjusted?
The delay at switch on can be adjusted by connecting a capacitor between pin 3 and ground.
- What is the purpose of the internal +5V regulated auxiliary voltage?
The internal +5V regulated auxiliary voltage can be used to supply external circuits.
- Can the TDE1708DFT drive inductive loads?
Yes, the TDE1708DFT can drive both resistive and inductive loads.
- What is the thermal shutdown temperature of the TDE1708DFT?
The thermal shutdown temperature is 180°C.
- How does the LED driver indicate the output status?
The LED driver can source or sink current to indicate the output status, depending on the chosen output configuration.
- What is the quiescent current of the TDE1708DFT?
The quiescent current is 1.5 mA.
- Is the TDE1708DFT RoHS compliant?
Yes, the TDE1708DFT is RoHS compliant with an Ecopack2 grade.
