ncn6001 ON Semiconductor, ncn6001 Datasheet - Page 21

• Manufacturer Part Number: ncn6001
• Description: Compact Smart Card Interface Ic
• Manufacturer: ON Semiconductor

DC/DC OPERATION
capable to handle either step up or step down power supply
(Figure 16). The operation is fully automatic and, beside the
CRD_VCC to 400 mV called by the EMV specifications, an
active pull down NMOS is provided (Q7) to discharge the
The power conversion is based on a full bridge structure
In order to achieve the 250 ms max time to discharge
CMD_STOP
CMD_1.8V
CMD_3.0V
CMD_5.0V
Protocol: Special Mode
10 mF
G_HIZ
G_Q1
G_Q3
G_Q4
G_Q2
G_Q7
GND
C1
Figure 15. MISO Read Out Sequences
Figure 16. Basic DC/DC Converter
Q3
Q1
http://onsemi.com
6
V
CC
10
NCN6001
21
Q5
output voltage programming, does not need any further
adjustments.
external CRD_VCC reservoir capacitor. This timing is
guaranteed for a 10 mF maximum load reservoir capacitor
value (Figure 4).
22 mH
L1
11
Q6
GND
PWR_GND
CRD_VCC
12
Protocol: Standard SPI
13
Q4
Q2
GND
Q7
C2
GND
10 mF