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| NJM2373/73A/76 Adjustable High Precision Shunt Regulator GENERAL DESCRIPTION The NJM2373/73A and NJM2376 are adjustable high precision shunt regulators. The output voltage can be adjusted to any value between reference voltage and 14V by two extend resistors. NJM2373F/AF NJM2376F NJM2373U / AU NJM2376U PACKAGE OUTLINE FEATURES Operating Voltage ( VREF to 13V) High Precision Reference Voltage NJM2373 1.25V2% NJM2373A/76 1.25V1% Minimum External Parts Bipolar Technology Package Outline MTP5 , SOT-89 BLOCK DIAGRAM CATHODE PIN CONFIGURATION NC 1 ANODE 2 NC 3 4 REFERENCE 5 CATHODE ( NJM2373F/73AF ) REFERENCE + NC 1 ANODE 2 NC 3 5 REFERENCE 4 CATHODE VREF ( NJM2376F ) REFERENCE 1 ANODE ANODE 2 CATHODE 3 ( NJM2373U / AU ) CATHODE 1 ANODE 2 REFERENCE 3 ( NJM2376U ) NJM2373/73A/76 ABUSOLUTE MAXIMUM RATINGS PARAMETER Cathode Voltage Continuous Cathode Current Reference Input Current Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL VKA IKA IREF PD (MTP5) (SOT-89) Topr Tstg RATINGS +14 -30 to 50 -10 to 0.05 250 350 -40 to +85 -40 to +150 (Ta=25C) UNIT V mA mA mW C C (Ta=25C) UNIT V mA (IK=1mA, Ta=25C) MAX. UNIT 1275 mV 1250 1262.5 TYP. 1250 -- -- 2.0 0.4 0.01 0.12 2.7 2.0 4.0 1.0 1.0 -- mV/V mV/V A A A RECOMMENDED OPERATING CONDITIONS PARAMETER Cathode Voltage Cathode Current SYMBOL VKA IK MIN. VREF 1 TYP. -- -- MAX. 13 30 ELECTRICAL CHARACTERISTICS PARAMETER Reference Voltage Reference Voltage Change vs. Cathode Voltage Change Reference Input Current Minimum Input Current Cathode Current (Off Cond.) Dynamic Impedance SYMBOL VREF VREF/VREF IREF IMIN IOFF |ZKA| CONDITIONS VKA=VREF (*1) . NJM2373 VKA=VREF (*1) , NJM2373A NJM2376 |VREF|VKA5V(*2) 5VVKA13V(*2) VKA= VREF R1=10k,R2= (*2) VKA=VREF,VREF=-1%(*1) VKA=13V,VREF=0V(*3) VKA= VREF, f1kHz 1mAIK100mA(*1) MIN. 1225 1237.5 -- -- -- -- -- -- TEMPERATURE CHARACTERISTICS PARAMETER Reference Voltage Change Reference Input Current Change SYMBOL VREF IREF CONDITIONS VKA=VREF (*1) VKA= VREF R1=10k,R2=(*2) MIN. (IK=10mA, Ta=-20 to +85C) TYP. MAX. UNIT 10 0.5 mV A |VREF| *** Reference Voltage includes error. (*1) : TEST CIRCUIT1(Fig.1) (*2) : TEST CIRCUIT2(Fig.2) (*3) : TEST CIRCUIT3(Fig.3) NJM2373/73A/76 TEST CIRCUIT INPUT IK VKA INPUT R1 IK IREF VKA INPUT IOFF VKA VREF R2 VREF 1. VKA=VREF VO=VKA=VREF (Fig.1) 2. VKA>VREF VO = VKA = VREF (1+ R1/ R 2) + IREF * R1 (Fig.2) 3. IOFF (Fig.3) TYPICAL CHARACTERISTICS Reference Voltage VS. Ambient Temperature IK=1mA,VKA=VREF 1260 Pow e Dissipation VS. Ambient Temperature 400 350 Power Dissipation [mW] 250 200 150 100 50 0 0 20 40 60 80 100 Ambient Temperature [C] MTP-5 Reference Voltage [mV] 300 SOT-89 1255 1250 1245 1240 -40 -20 0 20 40 60 80 100 Ambient Temperature [C] Reference Voltage VS. Cathode Current VKA=VREF,Ta=25C 1255 Reference Voltage VS. Cathode Current VKA=VREF,Ta=25C 1400 1253 Reference Voltage [mV] 0 10 20 30 1254 Reference Voltage [mV] 1200 1000 1252 1251 800 1250 Cathode Current [mA] 600 0 20 40 60 80 100 Cathode Current [uA] NJM2373/73A/76 Reference Voltage VS. Cathode Current ( IK=1mA,R1=10k,R2=val500k,Ta=25C ) 1.5 Of fstate Cathode Current VS. Cathode Voltage VREF=VA,Ta=25C 0.6 Offstate Cathode Current [nA] 0 5 10 15 Reference Voltage [mV] 1.0 0.5 0.5 0.4 0.0 Cathode Current [V] 0.3 0 5 10 15 Cathode Voltage [V] Stable Operation Cathode Current VS. Load Capacitance VKA=VREF,Ta=25 Stable Operation Cathode Current [uA] 500 Output Noise Voltage [uVrms] Output Noise Voltage VS. Ambient Temperature IK=1mA,VKA=VREF 120 110 100 90 80 70 60 400 300 Stable Operation Region 200 100 Aunstable Operation Region 0 0.001 0.01 0.1 1 10 -40 -20 0 20 40 60 80 100 Loda Capacitance [uF] Ambient Temperature [C] Note) Oscillation might occur while operating within the range of safety curve. So that, it is necessary to make ample margins by taking considerations of fluctuation of the device NJM2373/73A/76 Reference Input Current VS. Ambient Temperature IK=1mA,R1=10k,R2= 3.0 Output Noise Voltage VS. Ambient Temperature IK=1mA,VKA=VREF 120 2.5 Output Noise Voltage [uVrms] Reference Input Current [uA] 110 100 90 80 70 60 2.0 1.5 -40 -20 0 20 40 60 80 100 Ambient Temperature [C] -40 -20 0 20 40 60 80 100 Ambient Temperature [C] Dynamic Impedance VS. Frequency IK=1mA,VKA=VREF,Ta=25C 1.2 Voltage Gaine VS. Frequency IK=1mA,Ta=25C 80 60 360 270 Voltage Gain 180 Phase [deg] Dynamic Impedance [] 40 Voltage Gain [dB] 0.8 20 0 -20 -40 -60 Phase 90 0 -90 0.4 -180 -270 -360 1,000,000 10,000,000 0.0 1 10 100 1,000 10,000 100,000 Frequency [Hz] -80 100 1,000 10,000 100,000 Frequency [Hz] CAUTION] The specifications on this data book are only given for information, without any guarantee as regards either mistakes or omissions. The application circuit in this data book 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. This datasheet has been download from: www..com Datasheets for electronics components. |
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