Specifications

CY8C24123A
CY8C24223A
CY8C24423A
Document Number: 38-12028 Rev. *V Page 26 of 71
DC Switch Mode Pump Specifications
Tab le 21 lists the guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75 V to 5.25 V and
–40 °C  T
A
 85 °C, 3.0 V to 3.6 V and –40 °C  T
A
 85 °C, or 2.4 V to 3.0 V and –40 °C  T
A
 85 °C, respectively. Typical parameters
are measured at 5 V, 3.3 V, and 2.7 V at 25 °C and are for design guidance only.
Table 21. DC Switch Mode Pump (SMP) Specifications
Symbol Description Min Typ Max Units Notes
V
PUMP
5 V 5 V output voltage from pump 4.75 5.0 5.25 V Configuration listed in footnote.
[11]
Average, neglecting ripple. SMP trip
voltage is set to 5.0 V.
V
PUMP
3 V 3.3 V output voltage from pump 3.00 3.25 3.60 V Configuration listed in footnote.
[11]
Average, neglecting ripple. SMP trip
voltage is set to
3.25 V.
V
PUMP
2 V 2.6 V output voltage from pump 2.45 2.55 2.80 V Configuration listed in footnote.
[11]
Average, neglecting ripple. SMP trip
voltage is set to
2.55 V.
I
PUMP
Available output current
V
BAT
= 1.8 V, V
PUMP
= 5.0 V
V
BAT
= 1.5 V, V
PUMP
= 3.25 V
V
BAT
= 1.3 V, V
PUMP
= 2.55 V
5
8
8
–
–
–
–
–
–
mA
mA
mA
Configuration listed in footnote.
[11]
SMP trip voltage is set to 5.0 V.
SMP trip voltage is set to 3.25 V.
SMP trip voltage is set to 2.55 V.
V
BAT
5 V Input voltage range from
battery
1.8 – 5.0 V Configuration listed in footnote.
[11]
SMP trip voltage is set to 5.0 V.
V
BAT
3 V Input voltage range from
battery
1.0 – 3.3 V Configuration listed in footnote.
[11]
SMP trip voltage is set to 3.25 V.
V
BAT
2 V Input voltage range from
battery
1.0 – 3.0 V Configuration listed in footnote.
[11]
SMP trip voltage is set to 2.55 V.
V
BATSTART
Minimum input voltage from
battery to start pump
1.2 – – V Configuration listed in footnote.
[11]
0 °C  T
A
 100. 1.25 V at T
A
= –40 °C
V
PUMP_Line
Line regulation (over V
BAT
range)
–5 –%V
O
Configuration listed in footnote.
[11]
V
O
is the V
DD
Value for PUMP Trip”
specified by the VM[2:0] setting in the
DC POR and LVD Specification, Table
26 on page 35.
V
PUMP_Load
Load regulation – 5 – %V
O
Configuration listed in footnote.
[11]
V
O
is the “V
DD
value for PUMP Trip”
specified by the VM[2:0] setting in the
DC POR and LVD Specification, Table
26 on page 35.
V
PUMP_Ripple
Output voltage ripple (depends
on capacitor/load)
– 100 – mVpp Configuration listed in footnote.
[11]
Load is 5 mA.
E
3
Efficiency 35 50 – % Configuration listed in footnote.
[11]
Load is 5 mA. SMP trip voltage is set
to 3.25 V.
E
2
Efficiency – – –
F
PUMP
Switching frequency – 1.3 – MHz
DC
PUMP
Switching duty cycle – 50 – %
Note
11. L
1
= 2 mH inductor, C
1
= 10 mF capacitor, D
1
= Schottky diode. See Figure 10