NJU7356 New Japan Radio Co.,Ltd, NJU7356 Datasheet
NJU7356
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NJU7356 Summary of contents
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... Single-phase DC Brushless Motor Driver IC GENERAL DESCRIPTION The NJU7356 is single-phase DC brushless motor driver IC. And It features MOS-FET driver circuit for better output characteristics. NJU7356 features Lock Detect, Frequency Generator Output, Thermal Shutdown Circuit and Hall Bias Terminal. Maximum output current is 1000mA and Continuance output current is 400mA suitable for variable speed FAN required Low Noise & ...
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... NJU7356 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Input Voltage Output Current (Continuance) Output Current (Peak) Operating Temperature Range Storage Temperature Range Power Dissipation Junction Temperature Note1 : This value is not to be over Pd. Note2 : Input voltage is not to be over supply voltage to really use. ...
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... FG-LEAK Lock Detect Circuit* Lock Protect T ON Time ON Lock Protect T OFF Time OFF Detect Protection T ON/OFF Ratio RATIO Hall Bias Hall Bias Voltage V HB CONDITION - - - - - - - Io=+400mA Io=-400mA Io=+400mA Io=-400mA IN+=5V, IN-=0V, R =10k L IN+=0V, IN-=5V, FG= NJU7356 (V =5V, Ta=25°C) DD MIN. TYP. MAX. UNIT - 2.0 5.0 - 180 - - 0.4 - 4.0 4.65 4. 0.20 0. ...
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... NJU7356 INPUT-OUTPUT TRUTH TABLE IN OUTA TIMING CHART Motor locked IN+ IN- OUTA OUTB FG POWER DISSIPATION 400 350 300 250 200 150 100 OUTB (Output Transistor (Output Transistor OFF ) Toff Ton Motor lock protection period 25 50 ...
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... NJU7356 VDD-Vhb VDD=5V, IN+=2.5V, IN-=GND (Io=5mA VDD (V) VDD-Vol VDD=5V, IN-=2.5V, IN+=GND (Io=400mA VDD (V) Io-Vol VDD=5V, IN-=2.5V, IN+=GND (Io=400mA) 200 400 ...
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... VDD(V) APPLICATION NOTE The NJU7356 are single-phase DC brushless motor driver IC in small TVSP8 package. With minimal external components, that can drive up to 400mA of motor current for small fan application. [Application Circuit Example] 1) Hall Bias unused application circuit GND ...
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... Therefore the same value of hall bias resistors is selected for R1 and R2. Given that the bias current is set to be 5mA by HW101A datasheet, R1 and R2 can be determined as follows: VDD Rin Ihbias 300 C1 HB VDD Hall IN+ element IN- R3 NJU7356 NJU7356 R L OUTA Motor OUTB ...
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... NJU7356 The output voltage of hall elements is influenced by the bias current and magnetic flux density of hall elements. The optimum input voltage of NJU7356 are 100mVp-p and higher. With such input voltage, the highest efficiency can be obtained. 2-2. When using HB (R3 design) By connecting a Hall device to the Hall bias terminal (HB), a constant Hall output amplitude that has good temperature characteristics is obtained, resulting in stable linear drive ...