73S1121F
EMV Smart-Card Terminal Controller
with Built-in Dual ISO-7816 Interface and USB
DATA SHEET
DC CHARACTERISTICS: ICC INTERFACE – VCC SIGNALS (DC-DC CONVERTER)
SYMBOL
PARAMETER
Condition
MIN
Typ.
MAX
UNIT
Card Power Supply (VCC) (VCC = VCC 1 or VCC 2 as appropriate)
Output Voltages to ICC1 and
ICC2
5V output
3V output
4.6
2.7
5.0
3.0
5.4
3.3
V
V
VCC1
VCC2
(with 40nAs dynamic loads
and VNOISE included)
2.9V < VPC < 3.6V
Peak to peak ripple and noise
on VCC
Deactivated
-0.25
0.0
0.4
V
CL = 6.8 µF and
mV
pp
mA
VNOISE
ICC1
ICC2
IOC
150
200
C
cp = 0.68 µF
5V output
65
65
200
200
Maximum Output Currents to
ICC1 and ICC2
3V output
mA
Each output
ICC over-current.
100
200
mA
measured separately
Combined Current
ICC1+ICC2
5V output
65
65
mA
mA
ICC12
3V output
VPC 3.0V to 3.6V
Assertion of
VCC Startup current
ISTARTUP
*
See Curve
mA
CMDVCC
Note: The following diagram shows the maximum start up and maximum operating current for VCC. If the load placed on VCC draws more
current than line indicated by “Maximum Static ICC at startup” when VCC is asserted, the DC-DC converter may not be able to achieve the
minimum voltage levels as specified for VCC2 above. Once the startup load condition has been met, the load can be increased to draw up to
the current limit indicated by the line labeled “ICC max after starting”. This type of load increase is expected as the clock signal to the card is
asserted and data transfer takes place. The diagram shows the worst-case condition, which is at 85°C.
70mA
Icc max after starting
60mA
50mA
40mA
30mA
20mA
Maximum Static ICC at
startup
3.00
3.30
3.60
2.70
VPC
Page: 16 of 25
© 2005 TERIDIAN Semiconductor Corporation
Rev 2.3
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
