SI3454 查看數據表（PDF） - Silicon Laboratories
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SI3454 Datasheet PDF : 57 Pages
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Si3454
Functional Block Diagrams
SHDN
MCU
SCL
SDAI
SDAO
A0
A1
A2
A3
INT
RESET
AUTO
C8051
MCU Core
SPI
SRAM
OTP
POR WDT
50MHz TIMERS
ADrC
10 Bit
500Khz
Bandgap
Temp
Sensor
AMUX
HVIO
Detect Xn (/4)
VPWR
(+52V)
HV
Drive
SIO
Control
Detect
n
Drive
Detection MUX
Measure
PGA
n
Measure n
AMUX
n
Gate
Drive Xn
Gate
Drive
DC-DC
Controller
n
VDDA
VDD AGND
DGND CAP DCEN SWO ISENSE
KSENSx
SENSEn GATEn
DRAINn
VDD (+3.3V)
DC-DC Converter Block Diagram
Rsn
0.25
(NOTE: Only one port shown)
VDRAINn
VDDA
VPWR
DCEN
3.3V
Regulator 4.3V
CAP
ISENSE
SWO
AGND
The case shown has both the DC-DC converter and series regulator enabled.
To enable ONLY the series regulator, tie SWO to VPWR. External components are unnecessary.
2
Rev. 1.1
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