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| MITSUMI Precision Adjustable Shunt Regulator MM1530 AT/AN Precision Adjustable Shunt Regulator Monolithic IC MM1530 AT/AN Outline The MM1530AT/AN is 3-termial adjustable shunt regulator, which provides a highly accurate 0.8% bandgap reference voltage. The output voltage can be adjusted to any value between reference voltage VREF and 12 volts 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 1. Reference voltage tolerance 2. Output voltage can be adjusted 3. Low Dynamic Output Impedance VREF=1.260V0.8% VREFVo12V ZKA =0.13 typ. Package TO-92 SOT-25 Pin Assignment 1 1 2 3 1 2 3 Reference Anode Cathode 1 2 3 5 4 2 3 4 5 SOT-25 (TOP VIEW) note:The second terminal is SUB, so connect the terminal to GND. NC SUB Cathode Reference Anode TO-92 MITSUMI Precision Adjustable Shunt Regulator MM1530 AT/AN Equivalent Circuit Diagram 3 VK REF 1 2 VA * TO-92 Package Absolute Maximum Ratings (Ambient Temperature, Ta=25C) Item Operating Temperature Storage Temperature Cathode to Anode voltage Cathode current Reference input current Allowable loss Symbol TOPR TSTG VKA IK IREF Pd Ratings -30~+85 -40~+125 12 50 50 500 (TO-92) 150 (SOT-25) Unit C C V mA A mW Recommended Operating Conditions Cathode to Anode voltage Cathode current (Ambient Temperature, Ta=25C) VREF~12 1~30 V mA VKA IK MITSUMI Precision Adjustable Shunt Regulator MM1530 AT/AN Electrical Characteristics Item Reference voltage Reference voltage deviation over temperature range Lord regulation Reference input current Reference input current deviation over temperature range Minimum Cathode Current Off-state Cathode Current Dynamic Impedance (Ambient Temperature, Ta=25C) Measurement conditions VKA=VREF VKA=VREF Ta=0~+70C VKA=VREF, VREF < VKA < 5V = = < VKA < 12V 5V = = VKA=VREF R1=10K, R2= VKA=VREF, R1=10K, R2= Ta=0~+70C VKA=VREF, VREF=2% Min. Typ. Max. Unit 1.250 1.260 1.270 3 1.0 1.0 2 0.3 0.15 0.1 0.13 12 2.7 2.0 4 1.2 0.3 1.0 0.5 V mV mV/V mV/V A A mA A Symbol VREF VREF/ Ta VREF / VKA IREF IREF/ Ta IKmin. IOFF ZKA VKA=12V, VREF=0V VKA=VREF, f < 1kHz IK=1~30mA = Measuring Circuit (1) VKA=VREF (3) IOFF > (2) VKA = VREF Vo=VKA=VREF (4) Open Loop Voltage Gain MITSUMI Precision Adjustable Shunt Regulator MM1530 AT/AN Characteristics High Voltage Operating Characteristics 1200 Input Current 4 Cathode Current IK (mA) 1000 800 600 400 200 0 0 0.5 1 1.5 Input Current IRef (A) 3 2 1 0 -50 0 50 100 150 Cathode Voltage VKA (V) Ambient Temperature Ta (C) Low Current Operating Characteristics 1 Reference Voltage 1.3 Cathode Current IK (A) 0.8 0.6 0.4 0.2 0 -0.2 0 10 20 30 Reference Voltage (V) 1.28 1.26 1.24 1.22 1.2 0 5 10 15 20 25 Cathode Voltage VKA (V) Cathode Voltage VKA (V) Detection Voltage Character Reference Voltage VRef (V) 1.3 Off State Leakage 1 Off-state Cathode Current IOFF (mA) 1.28 1.26 1.24 1.22 1.2 -50 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -50 0 50 100 150 0 50 100 150 Ambient Temperature Ta (C) Ambient Temperature Ta (C) MITSUMI Precision Adjustable Shunt Regulator MM1530 AT/AN Dynamic Output Impedance 100 Open loop Voltage Gain * Phase Open Loop Voltage Gain * Phase AV (dB) 200 150 100 50 0 Dynamic Impedance (ZKA) () 10 10V 1 7.5V 5V 2.5V 1k 10k 100k 1M 10M 0.1 -50 1k 10k 100k 1M 10M Frequency f (Hz) Frequency f (Hz) Pulse Response 6 5 VIN 4 3 2 VOUT 1 0 0 10 20 30 Stability Boundary Conditions 3 Input And Output Voltage VIN VOUT (V) Cathode Current IK (mA) 2.5 2 1.5 1 0.5 0 00.1 0.01 0.1 1 10 Time t (s) Load Capacitance CL (F) Notes concerning stability operation region The MM1431AT/AN requires external capasitors for regulator stability. These capacitors must be correctly selected for good performance. |
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