NJU7326
Single-phase DC Brushless Motor Driver IC
■
GENERAL DESCRIPTION
The NJU7326 is a single-phase DC brushless motor driver IC.
■
PACKAGE OUTLINE
It features MOS-FET output for better saturation characteristics.
Slew rate of amplifiers and feedback resistors are optimized to
achieve low-noise motor operation.
It is suitable for small fan-motor applications.
NJU7326R/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 : Reverse INPUT
3 : Non-Reverse INPUT
4 : V
SS
5 : RH
6 : NC
7 : B OUTPUT
8 : V
DD
1
RF
RF
8
A
– +
B
+ –
2
3
4
7
6
5
RH
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NJU7326
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Input Voltage
Storage Temperature Range
RATINGS
+7.0
-0.3 to V
DD
+0.3
-55 to +150
-40 to +85
400
SYMBOL
(unit)
V
DD
(V)
Vid (V)
Tstg (°C)
Topr (°C)
P
D
(mW)
(Ta=25°C)
NOTE
Operating Temperature Range
Power Dissipation
VSP8/TVSP (Single)
■
RECOMMENDED OPERATING CONDITION
V
DD
= 2.4V to 5.5V
■
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMB
OL
I
DD
V
IO
V
ICM
V
OM+
V
OM-
RF
RH
Io=+250mA
Io=-250mA
-
-
CONDITION
No Load Condition
Follower
Vo=2.5V : 1 circuit
:
(Ta=25°C, V
DD
=5V)
MIN.
Voltage
-
-15
0.4~4.0
4.55
-
22.0
240
3.0
-
-
4.65
0.35
27.5
300
4.0
+15
-
-
0.45
33.0
360
mA
mV
V
V
Ω
Ω
TYP.
MAX
UNIT
Operating Current
Input Offset Voltage
Input Common
Mode Voltage Range
Maximum Output
Voltage Range
Feedback Resistance
Hall Bias Resistance
-2-
NJU7326
■
TYPICAL APPLICATION
V
DD
1
RF
HALL
BIAS
RESISTOR
8
RF
2
3
4
A
– +
B
+ –
7
6
5
Di
Di
HALL
SENSOR
RH
S
N
S
N
MOTOR
AMATEUR
Di
Di
MOTOR
STATER
Diodes shown in the picture indicate external re-circulating diodes.
Place re-circulating diodes at output terminals depending on the inductive load.
[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.
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