BCM4354 Data Sheet
3.3V LDO (LDO3P3)
Table 43: Core Buck Switching Regulator (CBUCK) Specifications (Cont.)
Specification
Notes
Min.
Typ.
Max. Units
– µs
Input supply voltage ramp-up
time
0 to 4.3V
40
–
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 5.5V 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.
c. Total capacitance includes those connected at the far end of the active load.
3.3V LDO (LDO3P3)
Table 44: LDO3P3 Specifications
Specification
Notes
Min.
Typ.
Max. Units
5.25a
Input supply voltage, Vin
Min. = Vo + 0.2V = 3.5V dropout voltage
2.3
3.6
V
requirement must be met under maximum
load for performance specifications.
Output current
–
0.2
–
–
600
–
mA
V
Nominal output voltage, Vo
Default = 3.3V
3.3
Dropout voltage
At max. load.
–
–
200
+5
120
6
mV
%
Output voltage DC accuracy
Quiescent current
Includes line/load regulation.
No load
–5
–
–
100
5.8
1.5
µA
mA
µA
Maximum load (600 mA)
–
Leakage current
Line regulation
Power-Down mode,
junction temperature = 85°C
–
5
Vin from (Vo + 0.2V) to 4.8V, max. load
load from 1 mA to 450 mA
–
–
3.5
mV/V
Load regulation
PSRR
–
–
–
0.25
–
mV/mA
dB
Vin ≥ Vo + 0.2V,
20
Vo = 3.3V, Co = 4.7 µF,
Max. load, 100 Hz to 100 kHz
LDO turn-on time
Chip already powered up.
–
160
4.7
250
–
µs
1.0b
External output capacitor, Co Ceramic, X5R, 0402,
(ESR: 5 mꢀ–240 mꢀ), ± 10%, 10V
µF
External input capacitor
For SR_VDDBATA5V pin (shared with
Bandgap) Ceramic, X5R, 0402,
(ESR: 30m-200 mꢀ), ± 10%, 10V.
Not needed if sharing VBAT capacitor 4.7 µF
with SR_VDDBATP5V.
–
4.7
–
µF
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 5.5V 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®
October 15, 2014 • 4354-DS109-R
Page 159
BROADCOM CONFIDENTIAL
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