CY8C29x66 Final Data Sheet
3. Electrical Specifications
3.3.6
DC Switch Mode Pump Specifications
The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C
≤
T
A
≤
85°C, or 3.0V to 3.6V and -40°C
≤
T
A
≤
85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and
are for design guidance only.
Table 3-11: DC Switch Mode Pump (SMP) Specifications
Symbol
Description
Min
Typ
Max
Units
Notes
V
PUMP
5V
V
PUMP
3V
I
PUMP
5V Output Voltage at Vdd from Pump
3V Output Voltage at Vdd from Pump
Available Output Current
V
BAT
= 1.5V, V
PUMP
= 3.25V
V
BAT
= 1.8V, V
PUMP
= 5.0V
4.75
3.00
5.0
3.25
5.25
3.60
V
V
Configuration of footnote. Average, neglecting ripple. SMP
trip voltage is set to 5.0V.
Configuration of footnote.
a
Average, neglecting ripple. SMP
trip voltage is set to 3.25V.
Configuration of footnote.
a
a
8
5
1.8
1.0
1.2
–
–
–
–
–
–
–
5.0
3.3
–
mA
mA
V
V
V
SMP trip voltage is set to 3.25V.
SMP trip voltage is set to 5.0V.
Configuration of footnote.
a
SMP trip voltage is set to 5.0V.
Configuration of footnote.
a
SMP trip voltage is set to 3.25V.
Configuration of footnote.
a
0
o
C
≤
T
A
≤
100. 1.25V at T
A
= -
40
o
C.
Configuration of footnote.
a
V
O
is the “Vdd Value for PUMP
Trip” specified by the VM[2:0] setting in the DC POR and
LVD Specification, Table 3-15 on page 27.
Configuration of footnote.
a
V
O
is the “Vdd Value for PUMP
Trip” specified by the VM[2:0] setting in the DC POR and
LVD Specification, Table 3-15 on page 27.
Configuration of footnote.
a
Load is 5 mA.
Configuration of footnote.
a
Load is 5 mA. SMP trip voltage
is set to 3.25V.
V
BAT
5V
V
BAT
3V
V
BATSTART
Δ
V
PUMP_Line
Input Voltage Range from Battery
Input Voltage Range from Battery
Minimum Input Voltage from Battery to
Start Pump
Line Regulation (over V
BAT
range)
–
5
–
%V
O
Δ
V
PUMP_Load
Load Regulation
–
5
–
%V
O
Δ
V
PUMP_Ripple
Output Voltage Ripple (depends on capaci- –
tor/load)
100
50
1.4
50
–
–
–
–
mVpp
%
MHz
%
E
3
F
PUMP
DC
PUMP
Efficiency
Switching Frequency
Switching Duty Cycle
35
–
–
a. L
1
= 2
μ
H inductor, C
1
= 10
μ
F capacitor, D
1
= Schottky diode. See Figure 3-2.
Figure 3-2. Basic Switch Mode Pump Circuit
D1
Vdd
V
PUMP
L
1
V
BAT
C1
SMP
+
Battery
PSoC
Vss
August 5, 2008
Document No. 38-12013 Rev. *J
25
CYPRESS [ CYPRESS SEMICONDUCTOR ]
