CY8C58LP_13 Datasheet, PDF (68/122 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC®)

PSoC^® 5LP: CY8C58LP Family
Datasheet
Table 11-7. Inductive Boost Regulator AC Specifications
Parameter
V_RIPPLE
Description
Ripple voltage,
peak-to-peak^[27]
Conditions
LBOOST = 10 μH, CBOOST = 22 μF || 0.1 μF, 2 <
VBAT:VOUT ≤ 4, Iout = 10 mA
Table 11-8. Recommended External Components for Boost Circuit
Parameter
L_BOOST
C_BOOST
I_F
V_R
Description
Boost inductor
Filter capacitor^[27]
External Schottky diode
average forward current
Conditions
LBOOST = 4.7 µH
LBOOST = 10 µH
LBOOST = 22 µH
Min
–
Min
4.7
–
–
–
1
20
Typ
–
Typ
10
10
22
22
–
–
Max Units
100
mV
Max Units
22
µH
–
µF
–
µF
–
µF
–
A
–
V
Figure 11-5.
L_BOOST = 10
Efficiency
µH^[28]
vs
I_OUT
V_BOOST
=
3.3
V,
90
Vbat = 2.8
88
Vbat = 2.4
Vbat = 1.8
86
84
82
80
0
10
20
30
40
50
60
70
I_OUT, mA
Figure 11-6.
LBOOST = 22
Efficiency
µH^[28]
vs
I_OUT
V_BOOST
=
3.3
V,
90
88
86
84
82
80
0
Vbat = 2.8
Vbat = 2.4
Vbat = 1.8
10
20
30
40
50
60
70
I_OUT, mA
Notes
27. Based on device characterization (Not production tested).
28. Typical example. Actual efficiency may vary depending on external component selection, PCB layout, and other design parameters.
Document Number: 001-84932 Rev. *C
Page 68 of 122