TL432

TL432 SOT-23 Encapsulate Adjustable Reference Source TL432 Adjustable Accurate Reference Source DEVICE DESCRIPSION The TL432 is a three-terminal Shunt Voltage Reference providing a highly accurance 1.24V. The TL432 thermal stability and wide operating current, makes is sritable for all variety of applications that are looking for a low cost solution with high performance. SOT-23 1. REFERENCE 2. CATHODE FEATURES z Low dynamic output impedance z The effective temperature compensation in the working range of full temperature z Low output noise voltage z Fast on -state response z Sink current capability of 0.1mA to100mA 3. ANODE APPLICATION z Shunt Regulator z High-Current Shunt Regulator z Precision Current Limiter ABSOLUTE MAXIMUM RATINGS (Operating temperature rangeapplies unless otherwise specified) Parameter Symbol Value Units Cathode Voltage VKA 18 V Cathode Current Range (continuous) IKA 100 mA Reference lnput Current Range Iref 6 μA Power Dissipation Thermal Resistance from Junction to Ambient Operating Temperature PD 350 mW RθJA 357 ℃/W Topr 0~+70 ℃ Junction Temperature TJ 150 ℃ Storage Temperature Tstg -65~+150 ℃ 1 of 5 TL432 ELECTRICAL CHARACTERISTICS (Ta=25℃ unless otherwise specified) Parameter Reference input voltage (Fig 1) Deviation of reference voltage over full temperature range (Fig 1) Ratio of change in reference input voltage to the change in cathode voltage (Fig 2) Deviation of reference input current over full temperature range (Fig 2) Minimum cathode current for regulation (Fig 1) Symbol Test Vref Unit 1.2586 V 16 mV 2.4 mV/V 0.6 μA VKA=VREF 0.1 mA VKA=15V,VREF=0 0.5 μA 0.5 Ω 1.2214 IKA=10mA, △VKA=1.25V~15V lKA=10mA, R1=10kΩ, R2=∞, 0℃≤Ta≤70℃ IKA(min) ZKA Typ 0℃≤Ta≤70℃ △lref /△T Dynamic impedance Min VKA =VREF, IKA =10mA △Vref /△VKA Ioff Max VKA=VREF, IKA=10mA △Vref(DEV) Off-state cathode current(Fig 3) conditions VKA=VREF, lKA=0.1 ~20mA, f≤1.0kHz CLASSIFICATION OF Vref Rank 1% 1.5% Range 1.2276~1.2524 1.2214~1.2586 2 of 5 TL432 Typical Characteristics Cathode Current versus Cathode Voltage KA IK, CATHODE CURRENT (mA) 100 KA 50 0 -50 ref VKA=Vref Ta=25℃ -100 -1.5 -1.0 -0.5 0.0 0.5 VKA, CATHODE VOLTAGE 1.0 1.5 (V) Test Circuit for VKA=Vref Cathode Current versus Cathode Voltage IK, CATHODE CURRENT (uA) 400 300 200 IKA(min) 100 0 -100 VKA=Vref Ta=25℃ -200 -1.0 -0.5 0.0 0.5 VKA, CATHODE VOLTAGE 1.0 1.5 (V) Reference Input Voltage versus Ambient Temperature Vref, REFERENCE INPUT VOLTAGE (mV) 1300 1275 1250 1225 1200 VKA=Vref IK=10mA 1175 -40 -20 0 20 40 Ta, AMBIENT TEMPERATURE 60 80 100 (℃) 3 of 5 TL432 Change in Reference Input Voltage versus Cathode Voltage 0 △Vref, REFERENCE INPUT VOLTAGE (mV) IK=10mA Ta=25℃ -4 -8 -12 -16 -20 0 6 3 9 VKA, CATHODE VOLTAGE 12 15 (V) Test Circuit for VKA=Vref(1+R1/R2)+R1*Iref Reference Input Current versus Ambient Temperature Iref, REFERENCE INPUT CURRENT (nA) 500 400 300 200 100 IK=10mA 0 -40 R1=10KΩ -20 0 20 40 60 Ta, AMBIENT TEMPERATURE 80 100 (℃) Test Circuit for Iref Off-State Cathode Current versus Ambient Temperature Ioff, OFF-STATE CATHODE CURRENT (nA) 40 35 30 25 20 15 10 VKA=15V 5 Vref=0V 0 -40 -20 0 20 40 Ta, AMBIENT TEMPERATURE 60 80 100 (℃) a 4 of 5 Test Circuit for Ioff TL432 PACKAGE OUTLINE Plastic surface mounted package; 3 leads SOT-23 5 of 5