RK73B1JT473 NJRC [New Japan Radio], RK73B1JT473 Datasheet
RK73B1JT473
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RK73B1JT473 Summary of contents
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GENERAL DESCRIPTION The NJW4800 is a general purpose, half bridge power driver capable of supplying 4A current. The internal gate driver drives high-side/low-side power MOSFET; therefore, it has fast switching. Additionally, it has protection features such as over current protection ...
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NJW4800 BLOCK DIAGRAM Over current Protection Thermal Shut Down Under Voltage Lock Out PWM Input Control STBY 750k Ω FLT REG FLT REG Regulator (5V) High Side Level Shift Gate Driver Low Side Gate Driver ...
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ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Input Voltage FLT pin Voltage BS pin Voltage BS-OUT pin Voltage Power Dissipation Operating Junction Temperature Operating Temperature Range Storage Temperature Range RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL Operating Voltage Output Switch Current V Input ...
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NJW4800 ELECTRICAL CHARACTERISTICS PARAMETER General Characteristics Quiescent Current 1 (Operating) Quiescent Current 2 (Switching) Quiescent Current 3 (Standby) Output Block High-side SW ON Resistance Low-side SW ON Resistance Over Current Limit Output Rise Time Output Fall Time Dead Time PWM ...
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ELECTRICAL CHARACTERISTICS (Unless otherwise noted, V PARAMETER Internal Power Supply Circuit Output Voltage 1 Line Regulation Load Regulation REG pin Output Current Fault Function (FLT pin) Low Level Output Voltage OFF Leak Current PIN OPERATION TABLE INPUT PWM STBY L ...
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NJW4800 TIMING CHART Fig1. Output Rise/Fall Time, PWM Rise/Fall Delay Time PWM OUT Fig2. Maximum Continuous Output Time (High-level) PWM OUT Fig3. Switching and Dead Time - 6 - 50% tr 90% 50% 10% t d_ON t HPWM ON High ...
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TYPICAL APPLICATIONS PWM Controller (NJU7600) C =1µF FAULT PWM Signal Stand-by REG FLT Digital FAULT Audio PWM Signal PWM Signal STBY Stand-by REG FLT FAULT PWM PWM Signal STBY Stand-by Class-D full bridge audio amplifier Ver.2010-09- =1µF ...
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NJW4800 CHARACTERISTICS Over Current Limit vs. Temperature (High-side =0.47µF BS 6.5 C =1µF REG 6 5.5 5 4.5 4 -50 - Ambient Temperature Ta ( High-side SW ON Resistance vs. Temperature (I =1A, V ...
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CHARACTERISTICS Continuous Output High Time vs. Temperature + (V =12V, V 400 =0.47 µ µ 380 REG 360 340 320 300 -50 - Ambient Temperature Ta ( Under Voltage Lockout Block ...
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NJW4800 CHARACTERISTICS Quiescent Current 1 vs. Operating Voltage (V =0V, Ta=25 PWM 2 =0.47 µ µ REG 1 Operating Voltage V Quiescent Current 2 vs. Operating Voltage ...
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PIN DESCRIPTION PIN PIN NAME NUMBER 1 PWM 2 VDD 3 OUT 4 GND STBY 7 REG 8 FLT Exposed – PAD Ver.2010-09-29 PWM Signal Input Terminal As for Control Logic, Refer to PIN OPERATION TABLE (page.5) ...
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NJW4800 FUNCTIONAL EXPLANATION High-side, Low-side Switch The SW output drives the load controlled by the logic input signal from PWM terminal at PWM. When the signal at PWM is high (above 2.2V), the high-side switch is turned on. ...
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Boot Strap In order to drive the gate of the high side SW, the voltage that is higher than power supply voltage is necessary. The bootstrap condenser generates the power supply voltage of V gate of the high side SW. ...
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NJW4800 Under Voltage Lockout(UVLO) The UVLO circuit operating is released above V because the UVLO circuit operates, IC does not operate. There is 0.25V width hysteresis voltage at rise and decay of power supply voltage. Hysteresis prevents the malfunction at ...
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... The bypass capacitors should be connected as much as possible near VDD terminal. Ex. Bill of Materials Components Parts Name C − GRM21BB11H104KA01B P C GRM31MB31H105KA87B REG C GRM21BR71H474KA88B BS R RK73B1JT473 FLT Ver.2010-09-29 Functions Aluminum-Cap. Ceramic-Cap. 0.1µF, 50V (B-val) Ceramic-Cap. 1µF, 50V (B-val) Ceramic-Cap. 0.1µF, 50V (X7R-val) 47kΩ NJW4800 Manufacturers Nippon Chemi-con Murata Murata Murata KOA - 15 - ...
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NJW4800 MEMO - 16 - [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 ...