TLE6368 datasheet(6/59 Pages) INFINEON

6 / 59 page

TLE 6368 / SONIC

Data Sheet

Rev. 2.2, 2006-12-01

Q_LDO1

Voltage Regulator Output 1; 5V output; acts as the reference

for the voltage trackers.The SPI and window watchdog logic is

supplied from this voltage. For stability a ceramic capacitor of

470nF to GND is sufficient.

Bootstrap Bootstrap Input; add the bootstrap capacitor between pin SW

and pin Bootstrap, the capcitance value should be 2% of the

Buck converter output capacitance

29, 31

Switch Output; connect both pins externally through short lines

directly to the cathode of the catch diode and the Buck circuit

inductance.

30, 32

Supply Voltage Input; connect both pins externally through

short lines to the input filter/the input capacitors.

BOOST

Boost Input; for switching loss minimization connect a diode

(cathode directly to boost pin) in series with a 100nF ceramic

capacitor to the IN pin and from the anode of the diode to the

buck converter output a 22

Ω resistor. Recommended for 42V

applications. In 12/24V applications connect boost directly to IN.

WAKE

Wake Up Input; a positive voltage applied to this pin turns on

the device

SLEW

Slew control Input; a resistor to GND defines the current slope

in the buck switch for reduced EME

1.4

Pin definitions and functions (cont’d)

Pin No.

Symbol

Function

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