BD91362MUV Datasheet, PDF (3/5 Pages) Rohm – Silicon Monolithic Integrated Circuit

○BLOCK DIAGRAM・APPLICATION CIRCUIT
EN
ITH1
FB1
DVDD
Gm Amp
Current
Comp
RQ
S
Soft
Start1
Slope1
I²C
Master
DVDD
SDA
SCL
FB2
ITH2
I²C I/F
SCP1
SELECTOR
VREF
CLK1
OSC
SCP/
TSD
CLK2
SCP2
Gm Amp
Current
Comp
RQ
S
Slope2
Soft
Start2
CLK2
Current
Sense/
Protect
+
Driver
Logic
PVCC
UVLO
Current
Sense/
Protect
+
Driver
Logic
3/4
VCC
BST
PVCC1
SW1
PGND1
VIN
VOUT1
FB1
PVCC2
VIN
SW2
PGND2
VOUT2
FB2
GND
○I2C - BUS control map
Byte Bit7 Bit6 Bit5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1
DEVICE ADDRESS[6:0]
R/W
2
FB1[2:0]
0
FB2[2:0]
0
Byte 1 is DEVICE ADDRESS:[1100011]
Byte 2 is DATA BIT, from Bit5 to Bit7 set FB2[2:0] , from Bit1 to Bit3 set FB1[2:0]. Bit0 and Bit4 input ‘0’ .
The mode of this IC is WRITE MODE only.
REGSEL REGISTER (Write), initial value : 00h
REGISTRE R/W Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
FB1[2:0]
0
FB2[2:0]
0
REGSEL W
0
0
0
0
0
0
0
0
Bit [7:5]:
FB1[2:0] Set CH1 output voltage
“000”： 1.000V(initial)
“001”： 0.925V
“010”： 0.950V
“011”： 0.975V
“100”： 0.900V
“101”： 1.025V
“110”： 1.050V
“111”： 1.075V
Bit [3:1]:
FB2[2:0] Set CH2 output voltage
“000”： 1.000V(initial)
“001”： 0.925V
“010”： 0.950V
“011”： 0.975V
“100”： 0.900V
“101”： 1.025V
“110”： 1.050V
“111”： 1.075V
REV. C