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 ■ 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 2 1 : A OUTPUT 2 : A- INPUT 3 : A+ INPUT 4 : VSS 5 : B+ INPUT 6 : B- INPUT 7 : B OUTPUT 8 : VDD 8 Ach - + 7 Bch 3 + - 6 4 ■ 5 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) Operating Temperature Range -40 to +85 Topr (°C) Storage Temperature Range -50 to +150 Tstg (°C) Power Dissipation 400 PD (mW) NOTE VSP8/TVSP8 (Single) -1- NJU7325 ■ RECOMMENDED OPERATING CONDITION VDD = 2.4V ∼ 5.5V ■ ELECTRICAL CHARACTERISTICS PARAMETER SYMB OL (Ta=25°C, VDD=5V) CONDITION TYP. MAX UNIT - 3.0 4.0 mA Operating Current IDD No Load Condition Follower Vo=2.5V : 1 circuit Input Offset Voltage VIO - -15 - +15 mV Input Offset Current IIO - - 10 - pA Input Bias Current IIB - - 10 - pA Input Impedance RIN - - 1012 - Ω Input Common Mode Voltage Range VICM - 0.4~4.0 - - V Maximum Output Voltage Range VOM Io=+250mA 4.55 4.65 - Io=-250mA - 0.35 0.45 - 55 - - dB CMRR VICM=0.4 to 4.0V 53 - - dB PSRR VDD=4.5 to 5.5V 55 - - dB FT CL=10pF ; Open - 1.5 - MHz SR Voltage Follower - 1 - V/µs Large-Signal Voltage gain Common Mode Rejection ration Supply Voltage Rejection ration Unity Gain Bandwidth Slew Rate AV : MIN. Loop , RL=16.5Ω Voltage 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 VSS and VDD pins. -2- V NJU7325 ■ Application Circuit M VDD 1 8 Ach 2 - + 7 Bch 3 4 + - 6 5 VSS Note) Place decoupling-capacitor near VSS and VDD 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-