TLE 6363 Infineon Technologies, TLE 6363 Datasheet - Page 19
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TLE 6363
Manufacturer Part Number
TLE 6363
Description
Manufacturer
Infineon Technologies
Datasheet
1.TLE_6363.pdf
(28 pages)
Specifications of TLE 6363
Packages
P-DSO-14
Comment
Please use RoHS compliant TLE6711
Vq (max)
5.0V
Iq (max)
250.0 mA
Iq (typ)
1,500.0 µA
Output
Boost/Buck Conv.
TLE 6363
Buck Converter
A stabilized logic supply voltage (typ. 5 V) for general purpose is realized in the system
L
by a buck converter. An external buck-inductance
is PWM switched by a high side
BU
DMOS power transistor with the programmed frequency (pin R).
V
The buck regulator supply is given by the boost converter output
, in case of a
BOOST
battery power-down the stored energy of the boost converter capacitor is used.
Like the boost converter, the buck converter uses the temperature compensated
bandgap reference voltage (typ. 2.8 V) for its regulation loop.
This reference voltage is connected to the non-inverting input of the error amplifier and
V
an internal voltage divider supplies the inverting input. Therefore the output voltage
CC
is fixed due to the internal resistor ratio to typ. 5.0 V.
The output of the error amplifier goes to the inverting input of the PWM comparator as
well as to the buck compensation output BUC.
When the error amplifier output voltage exceeds the sawtooth voltage the output power
MOS-transistor is switched on. So the duration of the output transistor conduction phase
V
depends on the
level. A logic signal PWM with variable pulse width is generated.
CC
Data Sheet Rev. 1.2
19
2003-06-02