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NJU7326
Single-phase DC Brushless Motor Driver IC
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GENERAL DESCRIPTION The NJU7326 is a single-phase DC brushless motor driver IC.
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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
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FEATURES
z Single Supply z Operating Voltage VDD=2.4 to 5.5V z Low Operating Current z Low Saturation Output Voltage Vsat=±0.35V @Io=±250mA z C-MOS Technology z Package VSP8, TVSP8
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BLOCK DIAGRAM
1 : A OUTPUT 2 : Reverse INPUT 3 : Non-Reverse INPUT 4 : VSS 5 : RH 6 : NC 7 : B OUTPUT 8 : VDD
1
RF RF
8
A – + B + –
2 3 4
7 6 5
RH
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NJU7326
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ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Input Voltage Storage Temperature Range RATINGS +7.0 -0.3 to VDD+0.3 -55 to +150 -40 to +85 400 SYMBOL (unit) VDD (V) Vid (V) Tstg (°C) Topr (°C) PD (mW)
(Ta=25°C) NOTE
Operating Temperature Range Power Dissipation
VSP8/TVSP (Single)
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RECOMMENDED OPERATING CONDITION VDD = 2.4V to 5.5V
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ELECTRICAL CHARACTERISTICS PARAMETER SYMB OL IDD VIO VICM VOM+ VOMRF RH Io=+250mA Io=-250mA CONDITION No Load Condition Follower Vo=2.5V : 1 circuit :
(Ta=25°C, VDD=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
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NJU7326
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TYPICAL APPLICATION
VDD
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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