BCM43455 Datasheet, PDF (136/159 Pages) Cypress Semiconductor – Single-Chip 5G WiFi IEEE 802.11ac MAC/Baseband/ Radio with Integrated Bluetooth 4.1 and FM Receiver

BCM43455 Preliminary Data Sheet
PCIe LDO
PCIe LDO
Table 49: PCIe LDO Specifications
Specification
Notes
Min. Typ. Max. Units
Input supply voltage, Vin
Min. V_IN = V_O + 0.15V = 1.35V (where
1.3 1.35
V_O = 1.2V)dropout voltage requirement
must be met under maximum load.
Output Current
Peak load=80 mA. Average load=35 mA 0.1 –
Output Voltage, V_o
Programmable in 25 mV steps.
Default = 1.2V
1.1 1.2
Dropout Voltage
At maximum load
–
–
Output Voltage DC Accuracy Includes line/load regulation
–4
–
Quiescent current
No load
–
10
55 mA load
–
550
Line Regulation
V_IN from (V_O + 0.1V) to 1.5V, 150 mA load –
–
Load Regulation
Load from 1 mA to 150 mA
–
0.02
Leakage Current
Power-down
–
5
Bypass mode
–
0.02
Output Noise
@30 kHz, 60–150 mA load C_o = 2.2 μF
–
–
@100 kHz, 60–150 mA load C_o = 2.2 μF
PSRR
@ 1kHz, Input > 1.35V, C_o= 2.2 μF,
V_o = 1.2V
20
–
LDO Turn-on Time
LDO turn-on time when balance of chip is up –
140
External Output Capacitor, C_o Total ESR (trace/capacitor):
5 mΩ–240 mΩ
0.27^{a 0.47}
External Input Capacitor
Only use an external input capacitor at the –
1
VDD_LDO pin if it is not supplied from
CBUCK output.
Total ESR (trace/capacitor): 30 mΩ–200 mΩ
1.5 V
55
mA
1.275 V
150 mV
+4
%
12
μA
570 μA
5
mV/V
0.05 mV/mA
20
μA
1.5 μA
60
nV/rt Hz
35
nV/rt Hz
–
dB
180 μs
–
μF
2.2 μF
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
BROADCOM CONFIDENTIAL
Page 135