NJM2373/73A/76 Adjustable High Precision Shunt Regulator ■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE 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 ■ FEATURES ● Operating Voltage ( VREF to 13V) ● High Precision Reference Voltage NJM2373U / AU NJM2376U NJM2373 1.25V±2% NJM2373A/76 1.25V±1% ● Minimum External Parts ● Bipolar Technology ● Package Outline MTP5 , SOT-89 ■ BLOCK DIAGRAM ■ PIN CONFIGURATION NC 1 CATHODE 5 CATHODE ANODE 2 NC 3 4 REFERENCE ( NJM2373F/73AF ) REFERENCE NC 1 + 5 REFERENCE ANODE 2 - NC 3 VREF 4 CATHODE ( 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=25°C) UNIT V mA mA mW °C °C ■ RECOMMENDED OPERATING CONDITIONS PARAMETER Cathode Voltage Cathode Current SYMBOL VKA IK MIN. VREF 1 TYP. — — MAX. 13 30 ■ ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Reference Voltage VREF Reference Voltage Change vs. Cathode Voltage Change ∆VREF/∆VREF Reference Input Current IREF Minimum Input Current Cathode Current (Off Cond.) Dynamic Impedance CONDITIONS VKA=VREF (*1) . NJM2373 VKA=VREF (*1) , NJM2373A NJM2376 |VREF|≤VKA≤5V(*2) MIN. 1225 1237.5 (IK=1mA, Ta=25°C) MAX. UNIT 1275 mV 1250 1262.5 TYP. 1250 — — ±2.7 mV/V — — ±2.0 mV/V — 2.0 4.0 µA IMIN 5V≤VKA≤13V(*2) VKA= VREF R1=10kΩ,R2=∞ (*2) VKA=VREF,∆VREF=-1%(*1) — 0.4 1.0 µA IOFF VKA=13V,VREF=0V(*3) — 0.01 1.0 µA |ZKA| VKA= VREF, f≤1kHz 1mA≤IK≤100mA(*1) — 0.12 — Ω ■ TEMPERATURE CHARACTERISTICS PARAMETER Reference Voltage Change Reference Input Current Change (Ta=25°C) UNIT V mA SYMBOL CONDITIONS MIN. (IK=10mA, Ta=-20 to +85°C) TYP. MAX. UNIT ∆VREF VKA=VREF (*1) ±10 mV ∆IREF VKA= VREF R1=10kΩ,R2=∞(*2) 0.5 µA |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 VKA INPUT IK VKA VKA IK R1 IOFF IREF R2 VREF INPUT VREF 1. VKA=VREF 2. VKA>VREF VO=VKA=VREF VO = VKA = VREF (1+ R1/ R 2) + IREF • R1 (Fig.1) 3. IOFF (Fig.2) (Fig.3) ■ TYPICAL CHARACTERISTICS Reference Voltage VS. Ambient Temperature IK=1mA,VKA=VREF Pow e Dissipation VS. Ambient Temperature 400 1260 SOT-89 300 Reference Voltage [mV] Power Dissipation [mW] 350 250 MTP-5 200 150 100 1255 1250 1245 50 0 0 20 40 60 80 1240 100 -40 -20 Ambient Temperature [°C] 20 40 60 80 100 Reference Voltage VS. Cathode Current VKA=VREF,Ta=25°C Reference Voltage VS. Cathode Current VKA=VREF,Ta=25°C 1255 1400 Reference Voltage [mV] 1254 Reference Voltage [mV] 0 Ambient Temperature [°C] 1253 1252 1251 1250 1200 1000 800 600 0 10 20 Cathode Current [mA] 30 0 20 40 60 Cathode Current [uA] 80 100 NJM2373/73A/76 Of fstate Cathode Current VS. Cathode Voltage VREF=VA,Ta=25°C Reference Voltage VS. Cathode Current ( IK=1mA,R1=10kΩ,R2=val500kΩ,Ta=25°C ) 0.6 Offstate Cathode Current [nA] Reference Voltage [mV] 1.5 1.0 0.5 0.5 0.4 0.3 0.0 0 5 10 15 0 5 Cathode Current [V] 120 500 Output Noise Voltage [uVrms] Stable Operation Cathode Current [uA] 15 Output Noise Voltage VS. Ambient Temperature IK=1mA,VKA=VREF Stable Operation Cathode Current VS. Load Capacitance VKA=VREF,Ta=25℃ 400 300 10 Cathode Voltage [V] Stable Operation Region 200 100 110 100 90 80 70 Aunstable Operation Region 0 0.001 60 0.01 0.1 1 10 Loda Capacitance [uF] 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 -40 -20 0 20 40 60 Ambient Temperature [°C] 80 100 NJM2373/73A/76 Output Noise Voltage VS. Ambient Temperature IK=1mA,VKA=VREF Reference Input Current VS. Ambient Temperature IK=1mA,R1=10kΩ,R2=∞ 120 Output Noise Voltage [uVrms] 2.5 2.0 110 100 90 80 70 60 1.5 -40 -20 0 20 40 60 80 -40 100 -20 Ambient Temperature [°C] 20 40 Voltage Gain [dB] 0.4 360 60 270 Voltage Gain 90 0 0 -20 -90 -180 Phase -60 0.0 -270 -80 1,000 10,000 100,000 180 20 -40 100 100 80 40 0.8 10 80 Voltage Gaine VS. Frequency IK=1mA,Ta=25°C 1.2 1 60 Ambient Temperature [°C] Dynamic Impedance VS. Frequency IK=1mA,VKA=VREF,Ta=25°C Dynamic Impedance [Ω] 0 Phase [deg] Reference Input Current [uA] 3.0 100 1,000 Frequency [Hz] 10,000 100,000 -360 1,000,000 10,000,000 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. 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