CY8C34_11 Datasheet, PDF (69/126 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC®)

PSoC^® 3: CY8C34 Family
Data Sheet
11.3.3 Inductive Boost Regulator.
Table 11-6. Inductive Boost Regulator DC 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
V_BAT
I_OUT
I_LPK
I_Q
V_OUT
Reg_LOAD
Reg_LINE
η
Description
Conditions
Input voltage
Includes startup
Load current^{[25, 26]}
T=-35 °C to +65 °C
Over entire temperature range
V_BAT = 1.6 – 3.6 V, V_OUT = 3.6 – 5.0 V,
external diode
V_BAT = 1.6 – 3.6 V, V_OUT = 1.6 – 3.6 V,
internal diode
V_BAT = 0.8 – 1.6 V, V_OUT = 1.6 – 3.6 V,
internal diode
V_BAT = 0.8 – 1.6 V, V_OUT = 3.6 – 5.0 V,
external diode
V_BAT = 0.5 – 0.8 V, V_OUT = 1.6 – 3.6 V,
internal diode
Inductor peak current
Quiescent current
Boost active mode
Boost standby mode, 32 khz external crystal
oscillator, I_OUT < 1 µA
Boost voltage range^{[27, 28]}
1.8 V
1.9 V
2.0 V
2.4 V
2.7 V
3.0 V
3.3 V
3.6 V
5.0 V
External diode required
Load regulation
Line regulation
Efficiency
L_BOOST = 10 µH
L_BOOST = 22 µH
Min Typ
0.5
–
0.68
–
–
–
–
–
–
–
–
–
–
–
–
–
–
200
–
12
1.71 1.80
1.81 1.90
1.90 2.00
2.28 2.40
2.57 2.70
2.85 3.00
3.14 3.30
3.42 3.60
4.75 5.00
–
–
–
–
70
85
82
90
Max
3.6
3.6
50
75
30
20
15
700
–
–
1.89
2.00
2.10
2.52
2.84
3.15
3.47
3.78
5.25
3.8
4.1
–
–
Units
V
V
mA
mA
mA
mA
mA
mA
µA
µA
V
V
V
V
V
V
V
V
V
%
%
%
%
Notes
25. For output voltages above 3.6 V, an external diode is required.
26. Maximum output current applies for output voltages ≤ 4x input voltage.
27. Based on device characterization (Not production tested).
28. At boost frequency of 2 MHz,V_OUT is limited to 2 x V_BAT. At 400 kHz, V_OUT is limited to 4 x V_BAT.
Document Number: 001-53304 Rev. *K
Page 69 of 126
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