18730 Datasheet, PDF (13/38 Pages) Freescale Semiconductor, Inc – Power Management IC with Five Power Management IC with Five Power Management IC with Five Power Management IC with Five

FUNCTIONAL DIAGRAMS
Table 5. Serial Interface Functions
Register Name Address
0 CLR, SLEEP
1 Power Mode
2 Clock Select
3
VO1
4
VO2
5
SREG1
6
SREG2
7
SREG3
1000
0001
0010
0011
0100
0101
0110
0111
CLR
PSW1
Ext / Int
MSB
MSB
MSB
MSB
MSB
DATA1
DATA2
SLEEP Reserved Reserved Reserved Reserved Reserved Reserved
PSW2
RSTO1B
VCC2
SREG1
SREG2
SREG3 RSTO2B
Half Freq RSTB sleep S_Off_VG VG_Duty[3] VG_Duty[2] VG_Duty[1] VG_Duty[0]
VO1 Output Voltage
LSB
S_Off_VO1
VO2 Output Voltage
LSB
S_Off_VO2
SREG1 Output Voltage
LSB
Reserved
SREG2 Output Voltage
LSB
SREG3 Output Voltage
LSB
CP Off EXTG On
Twelve bits immediately before start-up of STRB are
always effective. Upon power on, the internal power on reset
works to initialize the registers. Serial data is fetched in the
order of Add_[3], Add_[2], ..., Add_[0], DATA1_[3],
DATA1_[2], ...., DATA2_[0].
Table 6. Block Operation
INPUT
WAKE(Int) RSTO1B(Int) RSTO1B RSTO2B(Int) SEQSEL
VG
L
X
X
X
X
-
H
L
L
L
L
O
H
H
L
L
L
O
H
H
L
L
H
O
H
H
H
H
L
O
H
H
H
H
H
O
O : Operation, - : Stop, X : Don’t care
VO1
-
O
O
O
O
O
OUTPUT
VO2 VCC1,2
-
-
-
-
-
-
-
-
O
O
O
O
REG1,2,3
-
-
O
-
O
O
Table 7. Start-Up Sequence Settings
SEQSEL
CLR/SLEEP Series Regulators
V_STBY
GND
RSTO2B(Ext)
RSTO1B(Ext)
RSTO2B(Int)
RSTO1B(Int)
Analog Integrated Circuit Device Data
Freescale Semiconductor
18730
13