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TPS7B6833QPWPRQ1 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS7B6833QPWPRQ1 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page MCU Supply OUT IN TPS7B6850-Q1 PGADJ EN DELAY WDO WRS ROSC WD PG WD_EN WTS FSEL Battery MCU I/O GND MCU I/O MCU I/O MCU Reset Product Folder Sample & Buy Technical Documents Tools & Software Support & Community 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. PRODUCT PREVIEW Information. Product in design phase of development. Subject to change or discontinuance without notice. TPS7B6833-Q1, TPS7B6850-Q1 SLVSD43 – MAY 2015 TPS7B68xx-Q1 500-mA 40-V High-Voltage Ultralow Quiescent-Current Watchdog LDO 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 Range – Device HBM ESD Classification Level H2 – Device CDM ESD Classification Level C3B • Maximum Output Current: 500 mA • 4-V to 40-V Wide VIN Input-Voltage Range With Up to 45-V Transients • Fixed 3.3-V and 5-V Outputs • Maximum Dropout Voltage: 600 mV at 500 mA • Stable With Output Capacitor in Wide-Range of Capacitance (4.7 µF to 500 µF) and ESR (0.001 Ω to 20 Ω) • Low Quiescent Current (I(Q)) – < 4 µA When EN Is Low (Shutdown Mode) – 24 µA Typical at Light Loads With WD_EN High (Watchdog Disabled) • Configurable for Window or Standard Watchdog • Open-and-Close Window Ratio 1:1 or 8:1 Configurable • Fully Adjustable Watchdog Period (From 10 ms to 500 ms) • 9% Accurate Watchdog Period Across Temperature • Dedicated WD_EN Pin to Control Watchdog ON- OFF • Fully Adjustable Power-On Reset Threshold and Period • Low Input-Voltage Tracking to UVLO • Integrated Fault Protection – Overload Current-Limit Protection – Thermal Shutdown • 28-Pin HTSSOP Package 2 Applications • Automotive MCU Power Supply • Body Control Modules • Body Comfort Modules • EV and HEV Battery Monitor Systems • Electronic Gear Shifter • Transmission 3 Description In automotive microcontroller or microprocessor power-supply applications, the watchdog is used to monitor the microcontroller working status to prevent software runaway. It is necessary for the watchdog to be independent of the microcontroller in a reliable system. The TPS7B68xx-Q1 is a family of 500-mA watchdog LDOs designed for an operating voltage up to 40 V, with typical quiescent current of only 24 µA at light load. The devices integrate a programmable function for selecting a window or standard watchdog, with an external resistor to set the watchdog time within 9% accuracy. The PG pin on the TPS7B68xx-Q1 devices indicate when the output voltage is stable and in regulation. The power-good delay period and power-good threshold can be adjusted by external components. The devices also feature an integrated short-circuit and overcurrent protection. The combination of such features makes these devices particularly flexible and suitable to supply microcontroller systems in automotive applications. Device Information(1) PART NUMBER OUTPUT VOLTAGE (VO) PACKAGE TPS7B6833-Q1 Fixed 3.3 V HTSSOP (28) TPS7B6850-Q1 Fixed 5 V (1) For all available packages, see the orderable addendum at the end of the datasheet. Typical Application Schematic |
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