NJU7325
Single-Phase DC Brushless Motor Driver IC
■
GENERAL DESCRIPTION
The NJU7325 is dual power amplifiers.
■
PACKAGE OUTLINE
It features MOS-FET output for better saturation characteristics.
It is suitable for small fan-motor applications.
NJU7325R/RB1
■
FEATURES
Single Supply
Operating Voltage
V
DD
=2.4 to 5.5V
Low Operating Current
Low Saturation Output Voltage Vsat=±0.35V @Io=±250mA
C-MOS Technology
Package
VSP8, TVSP8
■
BLOCK DIAGRAM
1 : A OUTPUT
2 : A- INPUT
3 : A+ INPUT
4 : V
SS
5 : B+ INPUT
6 : B- INPUT
7 : B OUTPUT
8 : V
DD
1
2
3
4
Ach
8
-
+
7
Bch
+
-
6
5
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Input Voltage
RATINGS
+7.0
-0.3 to V
DD
+0.3
-40 to +85
-50 to +150
400
SYMBOL
(unit)
V
DD
(V)
Vid (V)
Topr (°C)
Tstg (°C)
P
D
(mW)
(Ta=25°C)
NOTE
Operating Temperature Range
Storage Temperature Range
Power Dissipation
VSP8/TVSP8 (Single)
-1-
NJU7325
■
RECOMMENDED OPERATING CONDITION
V
DD
= 2.4V
∼
5.5V
■
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMB
OL
I
DD
V
IO
I
IO
I
IB
R
IN
V
ICM
V
OM
AV
CMRR
PSRR
F
T
SR
CONDITION
No Load Condition
Follower
Vo=2.5V : 1 circuit
-
-
-
-
-
Io=+250mA
Io=-250mA
-
V
ICM
=0.4 to 4.0V
V
DD
=4.5 to 5.5V
C
L
=10pF ; Open
Voltage Follower
Loop
, R
L
=16.5Ω
:
(Ta=25°C, V
DD
=5V)
MIN.
Voltage
-
-15
-
-
-
0.4~4.0
4.55
-
55
53
55
-
-
3.0
-
10
10
10
12
-
4.65
0.35
-
-
-
1.5
1
4.0
+15
-
-
-
-
-
0.45
-
-
-
-
-
mA
mV
pA
pA
Ω
V
V
dB
dB
dB
MHz
V/µs
TYP.
MAX
UNIT
Operating Current
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Impedance
Input Common
Mode Voltage Range
Maximum Output
Voltage Range
Large-Signal
Voltage gain
Common Mode
Rejection ration
Supply Voltage
Rejection ration
Unity
Gain
Bandwidth
Slew Rate
Note1) Oscillation margin of NJU7325 will be narrow if the application features light load-current and
low-gain (i.e. voltage follower). Maintain the value of stray capacitance at the output terminal
with less than 100pF to prevent the oscillation.
Note2) Place decoupling-capacitor near V
SS
and V
DD
pins.
-2-
NJU7325
■
Application Circuit
M
V
DD
1
Ach
2
3
4
8
-
+
7
Bch
+
-
6
5
V
SS
Note) Place decoupling-capacitor near V
SS
and V
DD
pins.
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
-3-
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