Rainbow Electronics BA6955N User Manual
BA6283N / BA6955N
Motor driver ICs
Reversible motor driver
BA6283N / BA6955N
The BA6283N and BA6955N are reversible-motor drivers with a maximum output current of 1.0A. Two logic inputs allow
four output modes: forward, reverse, stop (standby), and brake.
The built-in power save circuit suppresses current consumption in the motor stop mode.
!!!!Applications
VCRs, audio devices
!!!!
Features
1) Logic and driver sections have separate ground pins; this allows the IC to drive speed-variable, reversible motors by
connecting an electronic governor circuit.
2) Built-in power saving circuit suppresses current consumption in stop (standby) mode.
3) Interfaces with TTL devices.
4) Built-in thermal shutdown circuit.
!!!!
Absolute maximum ratings
Parameter Symbol Limits Unit
Applied voltage
Power dissipation Pd
Operating temperature Topr
Storage temperature Tstg
Output current
∗1 Reduced by 9.2mW for each increase in Ta of 1°C over 25°C.
∗2 Reduced by 8.64mW for each increase in Ta of 1°C over 25°C.
∗3 Should not exceed Pd or ASO values.
BA6283N
BA6955N
(Ta = 25°C)
V
CC
I
OUT
!!!!Recommended operating conditions (Ta = 25°C)
Parameter
Operating power supply voltage
Symbol Min. Typ. Max. Unit
CC
V
M
V
5.5 15 V
5.5 15 V
18 V
∗1
1150
∗2
1080
−20~+75
−55~+150
∗3
1000
−
−
mW
°C
°C
mA
Motor driver ICs
!!!!Block diagram
BA6283N
BA6955N
CONTROL LOGIC
TSD
POWER
SAVE
1 2 3 4 5 6 7 8 9
OUT2 OUT1 GND GNDR
NF
V
M
V
CC
F
IN
BA6283N / BA6955N
R
IN
CONTROL LOGIC
TSD
POWER
SAVE
1 2 3 4 5 6 7 8
V
CC
F
IN
R
IN
OUT2 OUT1GND R
NF
V
M
Motor driver ICs
!!!!Pin descriptions
BA6283N
Pin No. Functions
BA6955N
Pin No.
Pin name
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
OUT2
R
NF
OUT1
V
M
GND
CC
V
IN
F
GND
R
IN
Pin name
V
CC
IN
F
GND
R
IN
OUT2
R
NF
OUT1
V
M
Motor output
Output GND, for connecting resistor for output current detection
Motor output
Motor power supply
GND
Power supply
Logic input
GND
Logic input
Functions
Power supply
Logic input
GND
Logic input
Motor output
Output GND, for connecting resistor for output current detection
Motor output
Motor power supply
BA6283N / BA6955N
!!!!Input / Output circuit
OUT2
V
Fig.1
M
OUT1
R
NF
F
IN
R
IN
12k
4.7k
20k
GND
11k
11k
10k
Resistances are typical values
Fig.2
V
CC
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