MB3853 Datasheet, PDF (5/14 Pages) Fujitsu Component Limited. – 1A Motor Drive IC for Motor Applications

MB3853
2. Sample connection to 1 motor for forward-reverse control
(1) Connection diagram
INH 7
IN1 2
IN2 3
VCC1
1
Power supply
circuit
Control circuit
Control circuit
Protective
circuits
100 µF ^*1
−+
VCC2
8
SW1
SW2
SW3
SW4
6
OUT1
*2
M1
Forward-reverse
control
4
OUT2
*2
9
MONITOR
5
GND
*1 : The capacitor should be placed close to the IC terminal.
*2 : Ensure that the OUT1 terminal (pin 6) voltage and OUT2 terminal (pin 4) voltage do
not fall below −0.3 V by connecting the OUT1 and OUT2 terminals to ground through
a Shot key barrier diode.
(2) Table of functions
Mode
Input voltage level
INH
IN1
IN2
Inhibit mode
“L”
×
×
Mode (1)
“L”
“L”
Mode (2)
Mode (3)
“L”
“H”
“H”
“H”
“L”
Mode (4)
“H”
“H”
× _{: May be either “H” or “L” level}
Output terminals
OUT1
OUT2
OFF
(High impedance)
“H”
“H”
“H”
“L”
“L”
“H”
“L”
“L”
Motor mode
Continuous operation
Brake
Forward (reverse)
Reverse (forward)
Brake
5