TPS653850-Q1 Datasheet, PDF (1/10 Pages) Texas Instruments – Multirail Power Supply for Microcontrollers in Safety-Relevant Applications

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS653850-Q1
SLVSDV4 – DECEMBER 2016
TPS653850-Q1 Multirail Power Supply for Microcontrollers in Safety-Relevant Applications
1 Device Overview
1.1 Features
1
• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to +125°C
Ambient Operating Temperature
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• Input Voltage Range
– 7 to 36 V for Initial Battery Power Up
– 3.8- to 36-V Full Functionality After Initial Battery
Power Up
– Minimum 2.3 V During Operation After Wake-up
• Supply Rails
– 6-V Synchronous Buck-Boost Preregulator With
Internal FETs
– 5-V, 200-mA (CAN) LDO With Internal FET
– 3.3-V or 5-V, 350-mA (MCU IO) LDO With
Internal FET
– 2 Sensor Supply LDOs With Internal FETs
– 120 mA for Sensor Supply 1, 20 mA for
Sensor Supply 2
– Configurable Tracking Mode (Tracking Input
Pin), or 3.3-V or 5-V Fixed Output Voltage
– Short-to-Ground and Battery Protection
– Charge Pump: 6-V Minimum, 11-V Maximum
Above Battery Voltage
• Monitoring and Protection
– Independent Undervoltage and Overvoltage
Monitoring on All Regulator Outputs, Battery
Voltage, and Internal Supplies
– Voltage Monitoring Circuitry, Including
Independent Bandgap Reference, Supplied from
Separate Battery Voltage Input Pin
– Self-Check on All Voltage Monitoring (During
Power-Up and After Power-Up Initiated by
External MCU)
– All Supplies Protected With Current Limit and
Overtemperature Prewarning and Shutdown
• Microcontroller Interface
– Open and Close Window or Question-Answer
Watchdog Function
– Lock-Step MCU Error-Signal Monitor
– DIAGNOSTIC state for Performing Device Self-
Tests and System Diagnostics
– SAFE State for Device and System Protection
upon Detected System Failure
– Clock Monitor for Internal Oscillator
– Analog and Logic Built-In Self-Test
– CRC on Non-Volatile Memory as well as Device
and System Configuration Registers and SPI
Communications
– Reset Circuit for MCU
– Diagnostic Output Pin
• SPI With CRC on Command Plus Data
• Error Reporting Through SPI Registers for Errors
on System Level and Device Level
• Enable-Drive Output for Disabling External Power-
Stages on Any Detected System Failure
• Wake-up through IGNITION Pin or CAN WAKUP
Pin
• 48-Pin HTSSOP PowerPAD™ IC Package
1.2 Applications
• Safety-Relevant Automotive Applications
• Industrial Safety-Relevant Applications
1.3 Description
The TPS653850-Q1 device is a multirail power supply designed to supply microcontrollers in safety
relevant applications, such as those found in the automotive industry. The device supports
microcontrollers with dual-core lockstep (LS) or loosely coupled architectures (LC).
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.