BCM43455 Preliminary Data Sheet
3.3V LDO (LDO3P3)
3.3V LDO (LDO3P3)
Table 45: LDO3P3 Specifications
Notes
Specification
Min.
Typ.
Max. Units
a
Input supply voltage, V
Output current
Min. = V + 0.2V = 3.5V dropout voltage 3.0
3.6
in
o
5.25
V
requirement must be met under
maximum load for performance
specifications.
–
0.001
–
450
–
mA
V
Nominal output voltage, V
Dropout voltage
Default = 3.3V
–
3.3
o
At max. load.
–
–
–
–
–
200
+5
mV
%
Output voltage DC accuracy
Quiescent current
Includes line/load regulation.
No load
–5
–
100
3.5
μA
Line regulation
V from (V + 0.2V) to 5.25V, max. load –
mV/V
in
o
Load regulation
PSRR
load from 1 mA to 450 mA
≥ V + 0.2V,
–
–
–
0.3
–
mV/mA
dB
V
20
in
o
V = 3.3V, C = 4.7 μF,
o
o
Max. load, 100 Hz to 100 kHz
LDO turn-on time
Chip already powered up.
–
160
4.7
250
10
μs
b
External output capacitor, C
Ceramic, X5R, 0402,
(ESR: 5 mΩ–240 mΩ), ± 10%, 10V
μF
o
1.0
External input capacitor
For SR_VDDBATA5V pin (shared with –
Bandgap) Ceramic, X5R, 0402,
4.7
–
μF
(ESR: 30m-200 mΩ), ± 10%, 10V.
Not needed if sharing VBAT capacitor
4.7 μF with SR_VDDBATP5V.
a. The maximum continuous voltage is 5.25V. Voltages up to 6.0V for up to 10 seconds, cumulative duration, over
the lifetime of the device are allowed. Voltages as high as 5.0V for up to 250 seconds, cumulative duration, over
the lifetime of the device are allowed.
b. Minimum capacitor value refers to the residual capacitor value after taking into account the part-to-part
tolerance, DC-bias, temperature, and aging.
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 131
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