TLE75008-EMD_15 Datasheet, PDF (7/64 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

TLE75008-EMD
Overview
Applications
• Low-side switches for 12 V in automotive or industrial applications such as lighting, heating, motor driving,
energy and power distribution
• Especially designed for driving relays, LEDs and motors.
Protective Functions
• Reverse battery protection on V_S 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
Diagnostic Features
• 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
Application Specific Functions
• Fail-safe activation via Input pins in Limp-Home Mode
• SPI with Daisy Chain capability
• Safe operation at low battery voltage (cranking)
Detailed Description
The TLE75008-EMD is an eight channel low-side switch providing embedded protective functions. The output
stages incorporate eight low-side switches (typical R_DS(ON) at T_J = 25°C is 1 Ω).
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 (V_S ≥ 3.0 V). The SPI functionality, including the possibility to program the device, is available only when
the digital power supply is present (see Chapter 6 for more details).
The TLE75008-EMD is equipped with two input pins that are connected to two 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.
Data Sheet
7
Rev. 1.1, 2015-09-25