mb3775pfv Fujitsu Microelectronics, Inc., mb3775pfv Datasheet - Page 12

• Manufacturer Part Number: mb3775pfv
• Description: Switching Regulator Controller
• Manufacturer: Fujitsu Microelectronics, Inc.

12
MB3775
SYNCHRONIZATION OF ICs
To synchronize MB3775 ICs, first, the specified capacitor and resistor are connected to the C
of the master IC to start self oscillation. Next, 2 V is applied to the R
charge/discharge circuit for triangular wave oscillation. Finally, the C
connected.
Instead of applying V
by the dashed line in Fig. 8). Select the pull-up resistance R
0.5 x N
V
CC
V
2 V
RT
R
RT
R
pull
to the R
pull
R
V
N:
T
CC
pull
terminals, these terminals can be pulled up by a resistor (see resistance indicated
: Power Supply Voltage (V)
: Pull up Resistor (k
Number of Slave ICs
C
Fig. 8 - Connection of Master, Slave
T
R
(MASTER)
(SLAVE)
(SLAVE)
T
MB3775
MB3775
MB3775
pull
from the formula given below.
T
T
terminals of the master and slave ICs are
terminals of the slave ICs to disable the
V
CC
T
and R
T
terminals