BCM43455 PMU Features
BCM43455 Preliminary Data Sheet
Figure 3 and Figure 4 on page 25 show the regulators and a typical power topology.
Figure 3: Typical Power Topology (Page 1 of 2)
WL RF- TX MIXER and PA (not all versions)
WL RF - LOGEN
BCM43455
1.2V
1.2V
1.2V
Internal LNLDO
80 mA
Internal LNLDO
10 mA
WL RF – LNA
Shaded areas are internal to the device.
Internal VCOLDO
80 mA
WL RF – AFE and TIA
WL RF – TX
1.2V
1.2V
Internal LNLDO
80 mA
Internal LNLDO
10 mA
WL RF – ADC REF
WL RF – XTAL
1.2V
XTAL LDO
30 mA
WL RF – RFPLL PFD and MMD
1 µF
0402
VBAT
2.2 µH
0806
CORE BUCK
1.2V
LNLDO
100 mA
0603
BT RF
1.35V
REGULATOR
CBUCK
Max 600 mA
Avg 170 mA
WL_REG_ON
2.2 µF
0402
0.1
4.7 µF
0402
BT_REG_ON
GND
µF
0201
PCIe LDO
Max 55 mA
Avg 35 mA
(bypass/off in
deepsleep)
1.2V
VDDIO
1.1V
LPLDO1
3 mA
PCIE PLL, RXTX
WL BBPLL/DFLL
0.47 µF
0201
WLAN/BT/CLB/Top, Always ON
WL OTP
CLDO
Max 200 mA
1.3V- 1.2V- 0.95V
(AVS)
Avg 80 mA
(bypass in
deep sleep)
WL PHY
4.7 µF
0402
WL Subcore
WL VDDM (SRAMs + AOS)
BT VDDM
BT Digital
Power switch
No power switch
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 24
BROADCOM CONFIDENTIAL
CYPRESS [ CYPRESS ]
