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TLE7368-3E Datasheet(PDF) 8 Page - Infineon Technologies AG |
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TLE7368-3E Datasheet(HTML) 8 Page - Infineon Technologies AG |
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8 / 41 page  Data Sheet 8 Rev. 2.1, 2010-11-22 TLE7368 Pin Configuration 22 23 SEL_LDO2 Selection input LDO2; Connect to GND to select 2.6 V output voltage for LDO2; Connect straight to Q_LDO2 to select 3.3 V output voltage for LDO2. 23 24 WDI Window Watchdog input; Apply a watchdog trigger signal to this pin 24 25 WDO Window Watchdog output; Open drain output, active low, connect external 10 k Ω pull-up resistor to microcontroller I/O voltage 25, 26 26, 27 SW Buck power stage’s output; Connect both pins directly, on short lines, to the Buck converter circuit, i.e. the catch diode and the Buck inductance 27 28 BST Bootstrap driver supply input; Connect the buck power stage’s driver supply capacitor to the SW pins; For capacitor selection please refer to Chapter 6. 28 29 FB/L_IN Buck converter feedback input plus input for LDO1 and trackers; Connect the output of the buck converter circuit with short lines to these pins; For Buck output capacitor selection please refer to Chapter 6. 29 30 Q_LDO1 Voltage regulator 1 output; 5 V output; Block to GND with capacitor for stable regulator operation; Selection of capacitor C Q_LDO1 according to Chapter 4.4 and Chapter 6. 30 31 FB_EXT External regulator feedback input; Feedback input of control loop for the external power stage regulator. Connect to the emitter of the regulating transistor; Block to GND with capacitor for stable regulator operation; Selection of capacitor C Q_FB_EXT according to Chapter 4.4 and Chapter 6. 31 32 DRV_EXT Bipolar power stage driver output; Connect the base of an external NPN transistor directly to this pin; Regarding choice of the external power stage refer to Chapter 6. 32, 33 – N.C. Internally not connected; Connect to GND_A. 34 33 Q_STBY Stand-by regulator output; Output voltage depending on the state of SEL_STBY; Block to GND with capacitor for stable regulator operation; Selection of capacitor C Q_STBY according to Chapter 4.4 and Chapter 6. 35 34 IN_STBY Input to stand-by regulator; Always connect the reverse polarity protected battery line to this pin; Input to all IC internal biasing circuits; Block to GND directly at the IC with ceramic capacitor; For proper choice of input capacitors please refer to Chapter 6. 36 35 MON_STBY Monitoring output for stand-by regulator; power fail active low output with special timing, open drain, connect external pull-up resistor. – 36 GND_A Analog ground connection; Connect to exposed pad. Pin (TLE7368G) Pin (TLE7368E) Symbol Function |
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