Table 22. Voltage regulator electrical characteristics (continued)
Symbol
C
Parameter
Conditions1
Value2
Unit
Min Typ Max
ILPREGINT
IVREGREF
CC D Low power regulator module current ILPREG = 15 mA;
consumption
TA = 55 °C
—
ILPREG = 0 mA;
TA = 55 °C
CC D Main LVDs and reference current
consumption (low power and main
regulator switched off)
TA = 55 °C
—
—
600 A
—
20
—
—
2
— A
IVREDLVD12 CC D Main LVD current consumption
(switch-off during standby)
TA = 55 °C
—
1
— A
IDD_HV_A CC D In-rush current on VDD_HV_A3 during
—
power-up
—
— 6004 mA
1 VDD_HV_A = 3.3 V ± 10% / 5.0 V ± 10%, TA = 40 to 125 °C, unless otherwise specified.
2 All values need to be confirmed during device validation.
3 Assumption is VDD_HV_A is now supplying the external ballast. This current is the ballast inrush current.
4 Inrush current is seen more like steps of 600 mA peak. The startup of the regulator happens in steps of 50 mV in
~25 steps to reach ~1.2 V VDD_LV. Each step peak current is within 600 mA
4.8.3 Voltage monitor electrical characteristics
The device implements a Power-on Reset module to ensure correct power-up initialization, as well as four low voltage detectors
to monitor the VDD_HV_A and the VDD_LV voltage while device is supplied:
• POR monitors VDD_HV_A during the power-up phase to ensure device is maintained in a safe reset state
• LVDHV3 monitors VDD_HV_A to ensure device is reset below minimum functional supply
• LVDHV5 monitors VDD_HV_A when application uses device in the 5.0 V±10% range
• LVDLVCOR monitors power domain No. 1 (PD1)
• LVDLVBKP monitors power domain No. 0 (PD0). VDD_LV is same as PD0 supply.
NOTE
When enabled, PD2 (RAM retention) is monitored through LVD_DIGBKP.
MPC5646C Microcontroller Data Sheet, Rev. 3
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
57