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DATA SHEET
TPS653850A-Q1 and TPS653852A-Q1 Multirail Power Supply for Microcontrollers in Safety-Relevant Applications
1 Features
- 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
- Functional Safety-Compliant
- Developed for Functional
Safety Applications
- Documentation Available to Aid ISO 26262 System Design up to
ASIL D
- Systematic Capability and
Hardware Integrity up to ASIL D
- Input Voltage Range
- 7 to 36-V for Initial Battery Power Up
- 4 to 36-V Full Functionality After Initial Battery Power Up
- Minimum 2.3 V During Operation After Wake-up
- Supply Rails (With Internal FETs)
- 6-V Synchronous Buck-Boost Preregulator
- 5-V, 285-mA LDO (CAN, Peripherals or ADC REF 1% Accuracy with 20 to 120 mA Load)
- 3.3-V or 5-V, 350-mA LDO (MCU) TPS653850A-Q1. 3.3-V 350-mA or 5-V 500 mA LDO (MCU) TPS653852A-Q1
- 2 LDOs Protected for Sensor Supply or Peripherals
- 120 mA for Sensor Supply 1 (VSOUT1), 100 mA for Sensor Supply 2 (VSOUT2)
- 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
- Monitor for Functional Safety MCU Fault output (PWM or level), 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 IGN Pin (Ignition) or CAN_WU Pin
(Transceiver or Other Function)
- 48-Pin HTSSOP
PowerPAD™ IC Package
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