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Table 37. Core Buck Switching Regulator (CBUCK) Specifications (Cont.)
Specification
Input supply voltage ramp-up
time
1.
The maximum continuous voltage is 4.8V. Voltage transients up to 6.0V (for up to 10 seconds), cumulative duration over the lifetime of the device, are
allowed. Voltage transients as high as 5.0V (for up to 250 seconds), cumulative duration over the lifetime of the device, are allowed.
2.
Minimum capacitor value refers to the residual capacitor value after taking into account the part-to-part tolerance, DC-bias, temperature, and aging.
3.
Total capacitance includes those connected at the far end of the active load.
16.2 3.3V LDO (LDO3P3)
Table 38. LDO3P3 Specifications
Specification
Input supply voltage, V
in
Output current
Nominal output voltage, V
o
Dropout voltage
Output voltage DC accuracy
Quiescent current
Line regulation
Load regulation
PSRR
LDO turn-on time
External output capacitor, C
External input capacitor
1.
The maximum continuous voltage is 4.8V. Voltage transients up to 6.0V (for up to 10 seconds), cumulative duration over the lifetime of the device, are
allowed. Voltage transients as high as 5.0V (for up to 250 seconds), cumulative duration over the lifetime of the device, are allowed.
2.
Minimum capacitor value refers to the residual capacitor value after taking into account the part-to-part tolerance, DC-bias, temperature, and aging.
Document Number: 002-14949 Rev. *G
PRELIMINARY
0 to 4.3V
Min. = V
+ 0.2V = 3.5V dropout voltage requirement
o
must be met under maximum load for performance
specifications.
–
Default = 3.3V
At max load.
Includes line/load regulation.
No load
V
from (V
+ 0.2V) to 4.8V, max load
in
o
load from 1 mA to 450 mA
V
≥ V
+ 0.2V,
in
o
V
= 3.3V, C
o
o
Max. load, 100 Hz to 100 kHz
Chip already powered up.
Ceramic, X5R, 0402,
o
(ESR: 5 mΩ–240 mΩ), ± 10%, 10V
For SR_VDDBATA5V pin (shared with Bandgap)
Ceramic, X5R, 0402,
(ESR: 30m-200 mΩ), ± 10%, 10V.
Not needed if sharing VBAT capacitor 4.7 µF with
SR_VDDBATP5V.
Notes
Notes
= 4.7 µF,
CYW43353
Min.
Typ.
Max.
40
–
–
Min.
Typ.
Max.
1
3.0
3.6
4.8
0.001
–
450
–
3.3
–
–
–
200
–5
–
+5
–
–
100
–
–
3.5
–
–
0.3
20
–
–
–
160
250
4.7
10
2
1.0
–
4.7
–
Page 88 of 113
Units
µs
Units
V
mA
V
mV
%
µA
mV/V
mV/mA
dB
µs
µF
µF
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