User's Guide

xE922-3GR Hardware User Guide
1VV0301272 Rev.0.8 2017-01-05
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Reserved. 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 (150mA_max+I_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…30MHz
Output vo
l
tage
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
C
out
11
22
+35%
u
F
internal module
tot.cap
+/-
32 uF
Capacitor ESR
R_esr
100
ohm
100 Hz
0.05
ohm
1 MHz…
1
0MHz
Output vo
ltage
Vreg
1.8
V
1.8V
ON
Output
Ireg
1.2
A