CY8C38_1105 Datasheet, PDF (73/130 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC) Multiply and divide instructions

PSoC^® 3: CY8C38 Family
Data Sheet
Table 11-7. Inductive Boost Regulator AC Specifications
Unless otherwise specified, operating conditions are: V_BAT = 2.4 V, V_OUT = 2.7 V, I_OUT = 40 mA, F_SW = 400 kHz, L_BOOST = 10 µH,
C_BOOST = 22 µF || 0.1 µF.
Parameter
Description
Conditions
Min Typ Max Units
V_RIPPLE
Ripple voltage
(peak-to-peak)
V_OUT = 1.8 V, F_SW = 400 kHz, I_OUT = 10 mA
–
–
100
mV
F_SW
Switching frequency
– 0.1, 0.4, –
or 2
MHz
Table 11-8. Recommended External Components for Boost Circuit
Parameter
Description
Conditions
Min Typ Max
L_BOOST
C_BOOST
I_F
V_R
Boost inductor
Filter capacitor^[29]
External Schottky diode
average forward current
External Schottky diode is required for
V_OUT > 3.6 V
4.7
10
47
10
22
47
1
–
–
20
–
–
Figure 11-8. Efficiency vs V_OUT
I_OUT = 30 mA, V_BAT ranges from 0.7 V to V_OUT, L_BOOST = 22 µH
Figure 11-9. Efficiency vs V_BAT
I_OUT = 30 mA, V_OUT = 3.3 V, L_BOOST = 22 µH
Units
µH
µF
A
V
Note
29. Based on device characterization (Not production tested).
Document Number: 001-11729 Rev. *S
Page 73 of 130
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