BCM43455 Preliminary Data Sheet
LNLDO
LNLDO
Table 48: LNLDO Specifications
Specification
Notes
Min.
Typ.
Max. Units
Input supply voltage, Vin
Min. V = V + 0.15V = 1.35V (where V = 1.3
1.35
1.5
V
IN
O
O
1.2V)dropout voltage requirement must be
met under maximum load.
Output Current
–
0.1
1.1
–
150
mA
V
Output Voltage, V
Programmable in 25 mV steps.
Default = 1.2V
1.2
1.275
o
Dropout Voltage
At maximum load
–
–
150
+4
–
mV
%
Output Voltage DC Accuracy Includes line/load regulation
–4
–
–
Quiescent current
No load
44
970
–
μA
μA
Max. load
–
990
5
Line Regulation
V from (V + 0.1V) to 1.5V, 150 mA load –
mV/V
in
o
Load Regulation
Leakage Current
Output Noise
Load from 1 mA to 150 mA
Power-down
–
–
–
0.02
–
0.05
10
mV/mA
μA
@30 kHz, 60–150 mA load C = 2.2 μF
@100 kHz, 60–150 mA load C = 2.2 μF
–
60
35
nV/rt Hz
nV/rt Hz
o
o
PSRR
@ 1kHz, Input > 1.35V, C = 2.2 μF, V =
20
–
–
dB
o
o
1.2V
LDO Turn-on Time
LDO turn-on time when rest of chip is up
–
140
2.2
180
4.7
μs
a
External Output Capacitor, Total ESR (trace/capacitor):
5 mΩ–240 mΩ
μF
0.5
C
o
External Input Capacitor
Only use an external input capacitor at the –
VDD_LDO pin if it is not supplied from
CBUCK output.
1
2.2
μF
Total ESR (trace/capacitor): 30 mΩ–200 mΩ
a. 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 134
BROADCOM CONFIDENTIAL
CYPRESS [ CYPRESS ]
