BCM43455 Preliminary Data Sheet
2.5V LDO (BTLDO2P5)
2.5V LDO (BTLDO2P5)
Table 46: BTLDO2P5 Specifications
Specification
Notes
Min.
Typ.
Max. Units
a
Input supply voltage
Min. = 2.5V + 0.2V = 2.7V.
3.0
3.6
5.25
V
Dropout voltage requirement must be
met under maximum load for
performance specifications.
Nominal output voltage
Default = 2.5V.
Range
–
2.5
2.5
–
–
V
Output voltage programmability
2.2
–5
2.8
5
V
Accuracy at any step (including line/
load regulation), load > 0.1 mA.
%
Dropout voltage
Output current
At maximum load.
–
–
–
200
70
mV
mA
μA
0.1
–
–
Quiescent current
No load.
8
16
Maximum load at 70 mA.
Power-down mode.
–
660
1.5
–
700
5
μA
Leakage current
Line regulation
–
μA
V from (V + 0.2V) to 5.25V,
–
3.5
mV/V
in
o
maximum load.
Load regulation
PSRR
Load from 1 mA to 70 mA,
–
–
–
0.3
–
mV/mA
dB
V = 3.6V.
in
V
≥ V + 0.2V, V = 2.5V, C = 2.2 μF, 20
in
o
o
o
maximum load, 100 Hz to 100 kHz.
LDO turn-on time
In-rush current
Chip already powered up.
–
–
–
150
250
μs
V = V + 0.15V to 5.25V, C = 2.2 μF, –
mA
in
o
o
No load.
b
External output capacitor, C
External input capacitor
Ceramic, X5R, 0402,
(ESR: 5m–240 mΩ), ±10%, 10V
2.64
–
o
0.7
2.2
4.7
μF
μF
For SR_VDDBATA5V pin (shared with –
Bandgap) ceramic, X5R, 0402,
(ESR: 30–200 mΩ), ±10%, 10V.
Not needed if sharing VBAT 4.7 μF
capacitor 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. The minimum value refers to the residual capacitor value after taking into account part-to-part tolerance, DC-
bias, temperature, and aging.
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 132
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