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 -55 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 Ω 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-