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Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements withou t prior notification. The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications. MITSUMI Precision Adjustable Shunt Regulator MM1431 Series Precision Adjustable Shunt Regulator MM1431 Series Outline This IC is 3-termial adjustable shunt regulator, wh ich provides a highly accu rate 0.8% bandgap reference voltage. The output voltage can be adjusted to any value between reference voltage VREF and 35V with two external resistors. Moreover, there are a lot of ranges of the application as a zener diode besides the replacement is possible because it has steep turn-on characteristics. Features (Unless otherwise specifi ed, Topr=+25°C) (1) Reference voltage tolerance V REF=2.495V±0.8% (2) Output voltage can be adjusted V REF Vo 35V (3) Low Dynamic Output Impedance ZKA 0.2 typ. (4) Specifi cations Operating Temperature −30~+85ºC Cathode to Anode voltage V KA V REF~35 V Cathode current I K 0.6~50 mA Reference voltage V REF 2.495V±0.8% Reference voltage deviation over temperature range ±10mV (V KA=VREF, IK=10mA Ta=−30~+85ºC) Minimum Cathode Current I Kmin. 0.6mA max. Off-state Cathode Current I OFF . 0.1µA typ. Pin Assignment Top view TO-92A 123Reference Cathode Anode Top view SC-82ABB Reference Cathode AnodeN.C. Top view SOT-25A * N.C. Anode Reference SUB Cathode * note : The second terminal is SUB, so connect the terminal to GND. Product list Packages Parts no. Reference voltage Cathode current Dynamic impedance
MITSUMI Precision Adjustable Shunt Regulator MM1431 Series
- Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
- The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications. Absolute Maximum Ratings (Ambient Temperature, Ta=25°C) Item Symbol Ratings Unit Operating Temperature TOPR -30~+85 °C Storage Temperature TSTG -40~+125 °C Cathode to Anode voltage VKA 35 V Cathode current IK -100~100 mA Reference input current IREF -0.05~10 mA Allowable loss Pd 550 (TO-92) 150 (SOT-25A) mW Recommended Operating Conditions (Ambient Temperature, Ta=25°C) Cathode to Anode voltage VKA VREF~35 V Cathode current IK 0.6~50 mA Equivalent Circuit Diagram
MITSUMI Precision Adjustable Shunt Regulator MM1431 Series
- Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
- The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications. Measuring Circuit Electrical Characteristics (Ambient Temperature, Ta=25°C) Item Symbol Measurement conditions Min. Typ. Max. Unit Reference voltage VREF VKA=VREF, IK=10mA 2.475 2.495 2.515 V Reference voltage deviation over temperature range VREF/ Ta VKA=VREF, IK=10mA Ta=-30~+85°C ±10 mV Lord regulation VREF VKA=VREF~10V IK=10mA -1.4 -2.7 mV/V / VKA VKA=10V~35V IK=10mA -1 -2 mV/V Reference input current IREF IK=10mA R1=10K, R2=∞ 14 µ A Reference input current deviation over temperature range IREF/ Ta IK=10mA R1=10K, R2=∞ Ta=-30~+85°C ±0.5 µA Minimum Cathode Current IKmin. V KA=VREF 0.3 0.6 mA Off-state Cathode Current IOFF VKA=35V, VREF=0V 0.1 1.0 µA Dynamic Impedance ZKA VKA=VREF, f <= 1kHz IK=1~50mA 0.2 0.5 Ω (1) VKA=VREF (2) VKA >= VREF Vo=VKA=VREF (3) IOFF (4) Open Loop Voltage Gain
MITSUMI Precision Adjustable Shunt Regulator MM1431 Series
- Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
- The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications. High Voltage Operating Characteristics Reference Input Current -100 31-12 0-2 Cathode Voltage VKA (V) -25 -50 -75 100 125 150 Cathode Current IK (mA) 10050-25 75 02 5-50 Ambient Temperature Ta (°C) 1.5 0.5 2.5 Reference Input Current IRef (µA) Low Current Operating Characteristics 3210 Cathode Voltage VKA (V) 0.8 0.6 0.4 0.2 1.0 1.2 Cathode Current IK (mA) Reference Voltage Reference Voltage -30 402053 5 302510 150 Cathode Voltage VKA (V) -10 -15 -20 -25 Voltage Changed Portion VRef (mV) 2.40 10050-25 75 02 5-50 Ambient Temperature Ta (°C) 2.48 2.46 2.44 2.42 2.50 2.56 2.54 2.52 2.58 2.60 Reference Voltage VRef (V) Off State Leakage 10050-25 75 02 5-50 Ambient Temperature Ta (°C) 0.05 0.20 0.15 0.10 0.25 0.30 Off-state Cathode Current IOFF (mA) Characteristics
MITSUMI Precision Adjustable Shunt Regulator MM1431 Series
- Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
- The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications. Dynamic Output Impedance Open loop Voltage Gain V KA=5V 0.01 1M10k 100k1k100 Frequency f (Hz) 0.1 100 Dynamic Impedance (ZKA) (Ω) -20 10M100k 1M10k1k Frequency f (Hz) Open Loop Voltage Gain AV (dB) Pulse Response 624 5 310 Time t (µs) Input Voltage Output Voltage Input And Output Voltage VIN VOUT (V) Stability Boundary Conditions 100.1 10.0100.1 Load Capacitance CL (µF)
100 Cathode Current IK (mA)
d Notes concerning stability operation region The MM1431AT/AN requires external capasitors for regulator stability. These capacitors must be correctly selected for good performance. a: VKA=VREF b: VKA=5V C: VKA=10V d: VKA=15V Cathode voltage temperature Ta=25°C I KA=10mA CL=: Ceramic capacitor