BCM4319 Preliminary Data Sheet
PALDO
PALDO
Table 22: Internal PALDOa
Notes Minimum Typical
Specification
Maximum Units
Input supply voltage
Output current
Output voltage range b
–
–
2.7
–
–
5.5
400
4.0
V
–
mA
V
Programmable, 100 mV 2.7
steps
3.3
Output voltage accuracy
Quiescent current
–
–5
–
–
5
%
No load
40
8
–
μA
mA
Maximum load
@30 kHz, 100 mA
–
–
Output noise
–
–
500
nV/ Hz
μF
Output capacitor (ESR: 30m–200
mΩ)
–
–
3.3
–
Output current limit
–
–
–
–
–
700
–
–
mA
mV
μs
Dropout voltage
400 mA load
200
60
–
Start-up time from power-down
–
30
20
c 2.5 to 3.3V(10–90%)
μs
Settling time for voltage step change
a. PALDO has programmable overvoltage protection that can be set to 3.6V or 4.4V: default is enabled.
b. For PSRR performance, the input supply should be at least 200 mV higher than the output.
c. Settling time for ΔV high to low voltage change will depend on load current: Tset ~ Cout.ΔV / Iload.
2.5V LDO (LDO2p5V)
Table 23: 2.5V LDO (LDO2p5V)
Specification
Notes
Minimum Typical
Maximum Units
Input supply voltage
Output current
–
2.7
–
–
5.5
50
2.75
–
V
–
–
mA
V
Output voltage
–
2.25
–
2.5
6
Quiescent current
No load
Max load
–
μA
mA
μF
–
1.5
1
–
Output capacitor
0.7
5
(ESR: 30 mΩ–200 mΩ)
Start-up time from power-down
–
–
500
1000
μs
Broadcom®
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Page 69
April 2, 2014 • 4319-DS05-R
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