BCM4354KKWBGT Datasheet, PDF (159/192 Pages) Cypress Semiconductor – Single-Chip 5G Wi-Fi IEEE 802.11ac 2×2 MAC/ Baseband/Radio with Integrated Bluetooth 4.1 and FM Receiver

BCM4354 Data Sheet
Internal Regulator Electrical Specifications
Section 18: Internal Regulator Electrical
Specifications
Note: Values in this data sheet are design goals and are subject to change based on the results of
device characterization.
Functional operation is not guaranteed outside of the specification limits provided in this section.
Core Buck Switching Regulator
Table 43: Core Buck Switching Regulator (CBUCK) Specifications
Specification
Notes
Min.
Input supply voltage (DC)
DC voltage range inclusive of
3.0
disturbances.
PWM mode switching frequency CCM, Load > 100 mA VBAT = 3.6V
2.8
PWM output current
–
–
Output current limit
–
–
Output voltage range
Programmable, 30 mV steps
1.2
Default = 1.35V
PWM output voltage
DC accuracy
Includes load and line regulation.
–4
Forced PWM mode
PWM ripple voltage, static
PWM mode peak efficiency
Measure with 20 MHz bandwidth limit. –
Static Load. Max. ripple based on
VBAT = 3.6V, Vout = 1.35V,
Fsw = 4 MHz, 2.2 μH inductor L > 1.05 μH,
Cap + Board total-ESR < 20 mΩ,
C_out > 1.9 μF, ESL<200pH
Peak Efficiency at 200 mA load
78
PFM mode efficiency
10 mA load current
70
Start-up time from
power down
VIO already ON and steady.
–
Time from REG_ON rising edge to CLDO
reaching 1.2V
External inductor
0806 size, ± 30%, 0.11 ± 25% Ohms
–
External output capacitor
Ceramic, X5R, 0402,
2.0^b
ESR <30 mΩ at 4 MHz, ± 20%, 6.3V
External input capacitor
For SR_VDDBATP5V pin,
ceramic, X5R, 0603,
ESR < 30 mΩ at 4 MHz, ± 20%, 6.3V,
4.7 µF
0.67^b
Typ.
3.6
4
–
1400
1.35
–
7
86
81
–
2.2
4.7
4.7
Max.
5.25^a
5.2
600
–
1.5
4
20
–
–
850
–
10^c
–
Units
V
MHz
mA
mA
V
%
mVpp
%
%
µs
µH
µF
µF
Broadcom^®
October 15, 2014 • 4354-DS109-R
BROADCOM CONFIDENTIAL
Page 158