BCM43903 Datasheet, PDF (16/87 Pages) Cypress Semiconductor – WICED™ IEEE 802.11 b/g/n SoC with an Embedded Applications Processor

BCM43903 Preliminary Data Sheet
BCM43903 1.2V
VBAT
Operational:
2.3V to 4.8V
Performance:
3.0V to 4.8V
Absolute Maximum: 5.5V
VDDIO
Operational:
3.3V
VBAT
Core Buck
Regulator
(CBUCK)
1.35V
VDDIO
REG_ON
1.35V
LPLDO1
Figure 3: Typical Power Topology (Page 1 of 2)
15 mA
Cap-less
LNLDO
Cap-less
LNLDO
Cap-less
VCOLDO
Cap-less
LNLDO
Cap-less
LNLDO
XTAL LDO
1.2V
1.2V
1.2V
1.2V
1.2V
1.2V
Mini-PMU
(Inside WL Radio)
CLDO
1.3V, 1.2V,
.095V (AVS)
BBPLL
LNLDO
1.2V
BCM43903 Power Management Unit Features
WLRF TX Mixer and PA (not always)
WLRF LOGEN
WLRF LNA
WLRF AFE and TIA
WLRF TX
WLRF ADC REF
WLRF XTAL
WLRF RFPLL, PFD, and MMD
WLAN/CLB/Top, Always On
WL PHY
WL Subcore
WL VDDM (SRAMS in AOS)
APPS VDDM
APPS SOCSRAM
APPS Subcore
WL BBPLL/DFLL
Supply ball
Ground ball
WLAN reset
ball
Supply bump/pad
Ground bump/pad
External to chip
Power
switch
No power switch
No dedicated power switch, but internal power-
down modes and block-specific power switches
Broadcom^®
March 12, 2016 • 43903-DS102-R
BROADCOM CONFIDENTIAL
Page 15