BCM4390DKWBGT Datasheet, PDF (68/78 Pages) Cypress Semiconductor – WICED™ Wi-Fi IEEE 802.11 b/g/n SoC with Embedded Application Processor

BCM4390 Advance Data Sheet
LNLDO
LNLDO
Table 22: LNLDO Specifications
Specification
Notes
Min Typ Max Units
Input supply voltage, V_in Min = 1.2V_o + 0.15V = 1.35V dropout voltage 1.3 1.35 1.5 V
requirement must be met under maximum
load.
Output Current
Output Voltage, V_o
Dropout Voltage
–
Programmable in 25 mV steps.
Default = 1.2V
At maximum load
0.1 –
150 mA
1.1 1.2 1.275 V
–
–
150 mV
Output Voltage DC Accuracy Includes line/load regulation
Quiescent current
No load
–4 –
+4 %
–
44 –
μA
Line Regulation
Load Regulation
Leakage Current
Output Noise
PSRR
LDO Turn-on Time
Max load
–
V_in from (V_o + 0.1V) to 1.5V, max load –
Load from 1 mA to 150 mA
–
Power-down
–
@30 kHz, 60–150 mA load C_o = 2.2 μF
–
@100 kHz, 60–150 mA load C_o = 2.2 μF
@ 1kHz, Input > 1.35V, C_o= 2.2 μF, V_o = 1.2V 20
LDO turn-on time when rest of chip is up –
970 990 μA
–
5
mV/V
0.02 0.05 mV/mA
–
10 μA
–
60 nV/rt Hz
35 nV/rt Hz
–
–
dB
140 180 μs
External Output Capacitor, Total ESR (trace/capacitor):
C_o
5 mΩ–240 mΩ
0.5^{a 2.2 4.7 μF}
External Input Capacitor Only use an external input capacitor at the –
1
2.2 μF
VDD_LDO pin if it is not supplied from
CBUCK output.
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 ®
February 5, 2014 • 4390-DS103-R
WICED Wi-Fi IEEE 802.11 SoC w/Embedded App Processor
Page 67
BROADCOM CONFIDENTIAL