User Manual
40
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Power Management Unit (PMU)
6.3.3
External Voltage Regulator 5.0V (VDDEXT)
This module represents the 5 V voltage regulator, which serves as a supply for external circuits. It can be used
e.g. to supply an external sensor, LEDs or potentiometers.
Features
• Switchable (by software) +5 V, low-drop voltage regulator
• Switch-on undervoltage blanking time in order to drive small capacitive loads
• Intrinsic current limitation
• Undervoltage monitoring and shutdown with MCU signalling (Interrupt)
• Overtemperature Shutdown with MCU signalling (Interrupt)
• Pull Down Current Source at the output for Sleep Mode only (typ. 100
μ
A)
• Cyclic sense option together with GPIOs
• Low current mode available to ensure reduced stop mode current consumption. In this mode current
capability is reduced to I
VDDEXT_LCM
The output capacitor
C
VDDEXT
is mandatory to ensure a proper regulator functionality.
Figure 13 Module
Block
Diagram
HALL_LDOblockexternal.vsd
VDDEXT LDO
VDDEXT (5V)
Supervision
VS
VD
DE
XT
_U
N
DER
VOLT
VD
D
EXT
_O
VE
RT
EM
P
C
VS
C
VDDEXT
VDDEXT Regulator
V
V