Datasheet

CY8C24123A
CY8C24223A
CY8C24423A
Document Number: 38-12028 Rev. *R Page 24 of 65
Figure 9. Basic Switch Mode Pump Circuit
V
BATSTART
Minimum input voltage from
battery to start pump
1.2 – – V Configuration listed in footnote.
[10]
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.
[10]
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 32.
V
PUMP_Load
Load regulation – 5 – %V
O
Configuration listed in footnote.
[10]
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 32.
V
PUMP_Ripple
Output voltage ripple (depends
on capacitor/load)
– 100 – mVpp Configuration listed in footnote.
[10]
Load is 5 mA.
E
3
Efficiency 35 50 – % Configuration listed in footnote.
[10]
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 – %
Table 21. DC Switch Mode Pump (SMP) Specifications (continued)
Symbol Description Min Typ Max Units Notes
Battery
C1
D1
+
PSoC
Vdd
Vss
SMP
V
BAT
L
1
V
PUMP