CY8C34 Datasheet, PDF (64/99 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC)

PRELIMINARY
PSoC^®3: CY8C34 Family Data Sheet
11.3 Power Regulators
Specifications are valid for -40°C ≤ Ta ≤ 85°C and Tj ≤ 100°C, except where noted. Specifications are valid for 1.71V to 5.5V, except
where noted.
11.3.1 Digital Core Regulator
Table 11-4. Digital Core Regulator DC Specifications
Parameter
Description
Conditions
Min
Typ Max Units
Vddd
Input voltage
1.8
-
5.5
V
Vccd
Output voltage
-
1.80
-
V
Regulator output capacitance
Total capacitance on the two Vccd pins.
-
1.1
-
µF
Each capacitor is ±10%, X5R ceramic or
better, see Power System on page 25
11.3.2 Analog Core Regulator
Table 11-5. Analog Core Regulator DC Specifications
Parameter
Description
Vdda
Input voltage
Vcca
Output voltage
Conditions
Regulator output capacitor
±10%, X5R ceramic or better
Min
Typ Max Units
1.8
-
5.5
V
-
1.80
-
V
-
1
-
µF
11.3.3 Inductive Boost Regulator
Table 11-6. Inductive Boost Regulator DC Specifications
Parameter
Description
Conditions
Min
Vbat
Input voltage
Includes startup
0.5
Vin=1.6-5.5V, Vout=1.6-5.5V, external
-
diode
Iboost
Load current^{[10, 11]}
Vin=1.6-3.6V, Vout=1.6-3.6V, internal diode -
Vin=0.8-1.6V, Vout=1.6-3.6V, internal diode -
Vin=0.8-1.6V, Vout=3.6-5.5V, external
-
diode
Vin=0.5-0.8V, Vout=1.6-3.6V, internal diode -
Lboost
Boost inductor
10 µH spec'd
4.7
Cboost
Filter capacitor^[9]
22 µF || 0.1 µF spec'd
10
If
External Schottky diode average External Schottky diode is required for
1
forward current
Vboost > 3.6V
Vr
External Schottky diode peak
External Schottky diode is required for
20
reverse voltage
Vboost > 3.6V
Ilpk
Inductor peak current
-
Quiescent current
Boost active mode
-
Boost standby mode, 32 khz external
-
crystal oscillator, Iboost < 1 µA
Typ Max Units
-
5.5
V
-
50
mA
-
75
mA
-
30
mA
-
20
mA
-
15
mA
10
47
µH
22
47
µF
-
-
A
-
-
V
-
700 mA
200
-
µA
12
-
µA
Notes
10. For output voltages above 3.6V, an external diode is required.
11. Maximum output current applies for output voltages < 4x input voltage.
Document Number: 001-53304 Rev. *B
Page 64 of 99
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