TLE9263QX
Voltage Regulator 2
7.2
Functional Description
In SBC Normal Mode VCC2 can be switched on or off via SPI.
For SBC Stop- or Sleep Mode, the VCC2 has to be switched on or off before entering the respective SBC mode.
The regulator can provide an output current up to IVCC2,lim
.
For low-quiescent current reasons, the output voltage tolerance is decreased in SBC Stop Mode because only a
low-power mode regulator with a lower accuracy (VCC2,out5) will be active for small loads. If the load current on
VCC2 exceeds IVCC2 > IVCC2,Ipeak,r then the high-power mode regulator will also be enabled to support an optimum
dynamic load behavior. The current consumption will then increase by typ. 2.9mA.
If the load current on VCC2 falls below the threshold (IVCC2 < IVCC2,Ipeak,f), then the low-quiescent current mode is
resumed again by disabling the high-power mode regulator.
Both regulators are active in SBC Normal Mode.
Note:If the VCC2 output voltage is supplying external off-board loads, the application must consider the series
resonance circuit built by cable inductance and decoupling capacitor at the load. Sufficient damping must be
provided.
7.2.1
Short to Battery Protection
The output stage is protected for short to VBAT.
Data Sheet
44
Rev. 1.1, 2014-09-26
INFINEON [ Infineon ]
