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TPS653850A-Q1

更新时间： 2024-09-29 11:11:47
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德州仪器 - TI /
页数 文件大小 规格书
14页 1725K
描述
适用于安全 MCU、具有 350mA I/O 电压轨、符合功能安全性标准的多轨电源

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TPS653850A-Q1 数据手册

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TPS653850A-Q1,TPS653852A-Q1
SLVSF96A – JANUARY 2020 – REVISED FEBRUARY 2021  
TPS653850A-Q1 and TPS653852A-Q1 Multirail Power Supply for Microcontrollers in  
Safety-Relevant Applications  
– Voltage Monitoring Circuitry, Including  
1 Features  
Independent Bandgap Reference, Supplied  
•
AEC-Q100 Qualified with the Following Results:  
– Device Temperature Grade 1: –40°C to +125°C  
Ambient Operating Temperature  
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  
– 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  
– 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  
– 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  
•
•
•
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  
•
•
•
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  
2 Applications  
•
•
Automotive Safety-Relevent Applications  
Industrial Safety-Relevant Applications  
•
3 Description  
The TPS653850A-Q1 and TPS653852A-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 functional safety microcontrollers with dual-core lockstep (LS) and other multi-core architectures.  
The TPS653850A-Q1 and TPS653852A-Q1 device integrates multiple supply rails to power the MCU, CAN or  
FlexRay, and external sensors. A buck-boost converter with internal FETs converts the input battery voltage  
between 2.3 V and 36 V to a 6-V preregulator output that supplies the other regulators. An integrated charge  
pump provides an overdrive voltage for the internal regulators, and can also be used to drive an external NMOS  
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.  
 
 
 
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