xE922-3GR Hardware User Guide
1VV0301272
Rev.0.8 2017-01-05
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Page 44 of 112
The datasheet of the eMCP specifies a maximum current consumption on this powersupply line of about
150mA (read operation).
Care should be exercised to limit the total power consumption, to keep heat dissipation limited:
Power_dissipation = (V_BAT-3.0V) x (15I_external)
5.2.1.4.
VSIM1/2
parameter
symbol
value
unit
condition
Default
value
Default
state
Min
Typ
max
External
cappacitor
Cext
100
135
nF
Cappacitor
ESR
R_esr
100
ohm
100 Hz
0.05
ohm
1 MHz…3
0MHz
Output voltage Vreg
1.2
2.91
V
2.91V
ON
Output
Current
Ireg
max
30
mA
Current
Limitation
Imax
80
mA
5.2.2.
DC/DC stepdown
5.2.2.1.
1V8_OUT
parameter
symbol
value
unit
condition
Default
value
Default
state
Min
Typ
max
Output capacitor
Cout
11
22
+35%
uF
internal module
tot.cap +/-32 uF
Capacitor ESR
R_esr
100
ohm
100 Hz
0.05
ohm
1 MHz…
10MHz
Output voltage
Vreg
1.8
V
1.8V
ON
Output
Ireg
1.2
A