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