TL432

TL432 SOT-23 Encapsulate Adjustable 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. 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 SOT-23 1. REFERENCE 2. CATHODE 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 ℃ www.slkormicro.com 1 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) Off-state cathode current(Fig 3) Dynamic impedance Symbol Vref △Vref /△VKA △lref /△T IKA(min) ZKA conditions Max 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 VKA=VREF, IKA=10mA △Vref(DEV) Ioff Test Min Typ 1.2214 VKA =VREF, IKA =10mA 0℃≤Ta≤70℃ IKA=10mA, △VKA=1.25V~15V lKA=10mA, R1=10kΩ, R2=∞, 0℃≤Ta≤70℃ 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 www.slkormicro.com 2 TL432 Cathode Current versus Cathode Voltage IK, CATHODE CURRENT (mA) 100 50 0 -50 VKA=Vref -100 -1.5 Ta=25℃ -1.0 -0.5 0.0 0.5 VKA, CATHODE VOLTAGE 1.0 1.5 (V) KA Cathode Current versus Cathode Voltage 400 IK, CATHODE CURRENT (uA) KA 300 200 IKA(min) 100 0 ref -100 VKA=Vref Ta=25℃ -200 -1.0 -0.5 0.0 0.5 VKA, CATHODE VOLTAGE 1.0 1.5 (V) Test Circuit for VKA=Vref Reference Input Voltage versus Ambient Temperature Vref, REFERENCE INPUT VOLTAGE (mV) 1300 1275 1250 1225 1200 VKA=Vref 1175 -40 IK=10mA -20 0 20 40 Ta, AMBIENT TEMPERATURE www.slkormicro.com 60 80 100 ( ℃) 3 TL432 Change in Reference Input Voltage versus Cathode Voltage 0 △Vref, REFERENCE INPUT VOLTAGE (mV) IK=10mA Ta=25℃ -4 -8 -12 -16 Test Circuit for VKA=Vref(1+R1/R2)+R1*Iref -20 0 3 6 9 VKA, CATHODE VOLTAGE 12 15 (V) 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 Test Circuit for Iref 100 ( ℃) 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 www.slkormicro.com 60 80 Test Circuit for Ioff 100 ( ℃) 4 TL432 PACKAGE OUTLINE Plastic surface mounted package; 3 leads www.slkormicro.com SOT-23 5