Datasheet

ST8024L Electrical characteristics
Doc ID 17709 Rev 5 11/35
Table 7. Step-up converter
Symbol Parameter
(1)
Test conditions Min. Typ. Max. Unit
f
CLK
Clock frequency Card active 2.2 3.2 MHz
V
th(vd-vf)
Threshold voltage for
step-up converter to
change to voltage
follower
5 V card 5.2 5.8 6.2
V3 V card 3.8 4.1 4.4
1.8 V card 3.8 4.1 4.4
V
UP
Output voltage on pin
V
UP
(average value)
5 V card 5.2 5.7 6.2
V3 V card 3.5 3.9 4.3
1.8 V card 3.5 3.9 4.3
1. V
DD
= 3.3 V, V
DDP
= 5 V, f
XTAL
= 10 MHz, unless otherwise noted. Typical values are at T
A
= 25 °C.
Table 8. Card supply voltage characteristics
Symbol Parameter
(1)
Test conditions Min. Typ. Max. Unit
C
VCC
External capacitance
on pin V
CC
See
(2)
80 400 nF
V
CC
Card supply voltage
(including ripple
voltage)
Card inactive; |I
CC
| = 0 mA
5 V, 3 V and
1.8 V card
-0.1 0 0.1
V
Card inactive; |I
CC
| = 1 mA
5 V, 3 V and
1.8 V card
-0.1 0 0.3
Card active; |I
CC
| < 80 mA 5 V card 4.75 5 5.25
Card active; |I
CC
| < 65 mA 3 V card 2.85 3 3.15
Card active; |I
CC
| < 45 mA 1.8 V card 1.68 1.8 1.92
Card active; single current
pulse I
P
= –100 mA; t
p
= 2 µs
5 V card 4.65 5 5.25
Card active; single current
pulse I
P
= –100 mA; t
p
= 2 µs
3 V card 2.76 3 3.20
Card active; single current
pulse I
P
= –100 mA; t
p
= 2 µs
1.8 V card 1.62 1.8 1.98
Card active; current pulses,
Q
P
= 40 nAs
5 V card 4.65 5 5.25
3 V card 2.76 3 3.20
1.8 V card 1.62 1.8 1.98
Card active; current pulses
Q
P
= 40 nAs with
|I
CC
| < 200 mA, t
p
< 400 ns
5 V card 4.65 5 5.25
3 V card 2.76 3 3.20
1.8 V card 1.62 1.8 1.98
V
CC
(RIPPLE)
(P-P)
Ripple voltage on
V
CC
(peak-to-peak
value)
f
RIPPLE
= 20 kHz to 200 MHz 350 mV