ncn6000 ON Semiconductor, ncn6000 Datasheet - Page 24

• Manufacturer Part Number: ncn6000
• Description: Compact Smart Card Interface Ic
• Manufacturer: ON Semiconductor

Table 5. Ceramic/Electrolytic Capacitors Comparison
NCN6000 characterization, the best comprise, at time of
printing
6.8 mF/10 V/Ceramic/X7R capacitor in parallel to achieve
the CRD_VCC filtering. The ESR will not extend 50 mW
over the temperature range and the combination of standard
parts provide an acceptable –20% to +20% tolerance,
Figure 22. External Capacitor Current Charge and
Manufacturers
Based on the experiments carried out during the
MURATA
VISHAY
VISHAY
this
CRD_VCC Voltage Ripple.
document,
Figure 21. CRD_VCC Ripple as a Function of the Capacitor Technology
Tantalum/594C/593C
Electrolytic Low Cost
CERAMIC/GRM225
Electrolytic/94SV
Type/Series
Top Trace = Electrolytic or Tantalum 10 mF
Bottom Trace = X7R 10 mF ceramic
The high ripple pulse across CRD_VCC is the consequence
of the large ESR of the electrolytic capacitor.
is
to
use
http://onsemi.com
Format
0805
two
NCN6000
24
together with a low cost. Obviously, the capacitor must be
SMD type to achieve the extremely low ESR and ESL
necessary for this application. Figure 21 illustrates the
CRD_VCC ripple observed in the NCN6000 demo board
depending upon the type of capacitor used to filter the output
voltage.
NOTES: Rload = 100 W , Vbat = 5.0 V, CRD_VCC = 5.0 V
10 mF/6.3 V
Max Value
10 mF/16 V
10 mF/10 V
10 mF/10 V
Figure 23. CRD_VCC Voltage Ripple
Cout = 10 mF/X7R, CRD_CLK = Stop High
+80%/−20%
−20%/+20%
−35%/+50%
Tolerance
C= 10 mF
Electrolytic or Tantalum
C= 10 mF
Ceramic
Typ. Z @ 500 kHz
450 mW
400 mW
30 mW
2.0 W