NJU7326
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
■
BLOCK DIAGRAM
zSingle Supply
zOperating Voltage
VDD=2.4 to 5.5V
zLow Operating Current
zLow Saturation Output Voltage Vsat=±0.35V @Io=±250mA
zC-MOS Technology
zPackage
VSP8, TVSP8
1
8
RF
2
A
– +
B
+ –
7
6
3
4
RF
1 : A OUTPUT
2 : Reverse INPUT
3 : Non-Reverse INPUT
4 : VSS
5 : RH
6 : NC
7 : B OUTPUT
8 : VDD
RH
5
-1-
NJU7326
■
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
RATINGS
SYMBOL
(unit)
Supply Voltage
+7.0
VDD (V)
Input Voltage
-0.3 to VDD+0.3
VID (V)
Storage Temperature Range
-50 to +150
Tstg (°C)
Operating Temperature Range
-40 to +85
Topr (°C)
Power Dissipation
400
PD (mW)
■
NOTE
VSP8/TVSP (Single)
RECOMMENDED OPERATING CONDITION
VDD = 2.4V to 5.5V
■
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMB
OL
(Ta=25°C, VDD=5V)
CONDITION
No Load Condition
Follower
Vo=2.5V : 1 circuit
:
MIN.
TYP.
MAX
UNIT
-
3.0
4.0
mA
Voltage
Operating Current
IDD
Input Offset Voltage
VIO
-15
-
+15
mV
VICM
0.4~4.0
-
-
V
Input Common
Mode Voltage Range
Maximum Output
Voltage Range
VOM+
Io=+250mA
4.55
4.65
-
VOM-
Io=-250mA
-
0.35
0.45
Feedback Resistance
RF
-
22.0
27.5
33.0
kΩ
RH
-
240
300
360
Ω
Hall Bias Resistance
-2-
V
NJU7326
■
TYPICAL APPLICATION
VDD
1
8
RF
HALL
BIAS
RESISTOR
2
Di
3
Di
4
RF
A
– +
B
+ –
7
6
5
RH
HALL
SENSOR
S
N
N
S
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.
-3-
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