TLE75602-ESH

The TLE75602-ESH is an eight channel low-side and high-side power switch in PG-TSDSO-24-21 package providing embedded protective functions. It is specially designed to control relays and LEDs in automotive and industrial applications. A serial peripheral interface (SPI) is utilized for control and diagnosis of the loads as well as of the device. For direct control and PWM there are two input pins available connected to two outputs by default. Additional or different outputs can be controlled by the same input pins (programmable via SPI). The TLE75602-ESH is an eight channel low-side and high-side switch providing embedded protective functions. The output stages incorporate two low-side and six auto-configurable high-side or low side switches (typical RDS(ON) at TJ = 25°C is 1 Ω). The auto-configurable switches can be utilized in high-side or lowside configuration just by connecting the load accordingly. Protection and diagnosis functions adjust automatically to the hardware configuration. Driving a load from high-side offers the possibility to perform Open Load at ON diagnosis. The 16-bit serial peripheral interface (SPI) is utilized to control and diagnose the device and the loads. The SPI interface provides daisy chain capability in order to assemble multiple devices (also devices with 8 bit SPI) in one SPI chain by using the same number of microcontroller pins. This device is designed for low supply voltage operation, therefore being able to keep its state at low battery voltage (Vs ≥ 3.0 V). The SPI functionality, including the possibility to program the device, is available only when the digital power supply is present. The TLE75602-ESH is equipped with two input pins that are connected to two configurable outputs, making them controllable even when the digital supply voltage is not available. With the Input Mapping functionality it is possible to connect the input pins to different outputs, or assign more outputs to the same input pin. In this case more channels can be controlled with one signal applied to one input pin. In Limp Home mode (Fail-Safe mode) the input pins are directly routed to channels 2 and 3. When IDLE pin is “low”, it is possible to activate the two channels using the input pins independently from the presence of the digital supply voltage. The device provides diagnosis of the load via Open Load at ON state, Open Load at OFF state (with DIAG_OSM.OUTn bits) and short circuit detection. For Open Load at OFF state detection, a internal current source IOL can be activated via SPI. Each output stage is protected against short circuit. In case of Overload, the affected channel switches OFF when the Overload Detection Current IL(0vLn) is reached and can be reactivated via SPI. In Limp Home mode operation, the channels connected to an input pin set to “high” restart automatically after Output Restart time tRETRY(LH) is elapsed. Temperature sensors are available for each channel to protect the device against Over Temperature. The power transistors are built by N-channel power MOSFET with one central chargepump for autoconfigurable channels. The inputs are ground referenced TTL compatible. The device is monolithically integrated in Smart Power Technology.

Applications

• Low-side and High-side switches for 12V in automotive or industrial applications such as lighting, heating, motor driving, energy and power distribution
• Especially designed for driving relays, LEDs and motors.

Key features

• 16-bit serial peripheral interface for control and diagnosis
• Daisy Chain capability
• SPI also compatible with 8-bit SPI devices
• 2 CMOS compatible parallel input pins with Input Mapping functionality
• Cranking capability down to VS = 3.0 V (supports LV124)
• Digital supply voltage range compatible with 3.3 V and 5 V microcontrollers
• Bulb Inrush Mode (BIM) to drive 2 W lamps and electronic loads
• Two internal PWM Generators for μC offload
• Very low quiescent current (with usage of IDLE pin)
• Limp Home mode (with usage of IDLE and IN pins)
• Green Product (RoHS compliant)
• AEC Qualified
• Reverse battery protection on VS without external components
• Short circuit to ground and battery protection
• Stable behavior at under voltage conditions (“Lower Supply Voltage Range for Extended Operation”)
• Over Current latch OFF
• Thermal shutdown latch OFF
• Overvoltage protection
• Loss of ground protection
• Loss of battery protection
• Electrostatic discharge (ESD) protection
• Latched diagnostic information via SPI register
• Over Load detection at ON state
• Open Load detection at OFF state using Output Status Monitor function
• Output Status Monitor
• Input Status Monitor
• Open Load detection at ON state
• Fail-safe activation via Input pins in Limp-Home Mode
• SPI with Daisy Chain capability
• Safe operation at low battery voltage (cranking)
• 2 W lamps, 5 W lamps with two channels in parallel mode and enhanced capacitive loads driving capability (Bulb Inrush Mode)
• Two independent internal PWM generators to drive e.g. LEDs