TL432 0.5%

UMW R UMW TL432 Adjustable Accurate Reference Source DEVICE DESCRIPSION: The UMW TL432 is a three-terminal adjustable shunt regulator highly accurate 1.25V band gap reference with 0.5%, 1% tolerance. The device offers thermal stability, wide operating current (50mA) and an extended temperature range of 0℃ to 85℃ for operation in power supply applications. The UMW TL432 offers a wide operating voltage range of up to 12V and is an excellent choice for voltage reference requirements in an isolated feedback circuit for 3.0V ~ 3.3V switching mode power supplies. The tight tolerance guarantees a lower design cost for the power supply manufacturer by virtually eliminating the need for an extra power supply manufacturing process of the power supply FEATURES: .Low dynamic output impedance .The effective temperature compensation in the working range of full temperature .Low output noise voltage .Fast on -state response .Sink current capability of 0.1mA to100mA APPLICATION: MARKING: ● Shunt Regulator ● High-Current Shunt Regulator ● Precision Current Limiter ABSOLUTE MAXIMUM RATINGS (Operating temperature range applies unless otherwise specified) Parameter Symbol Value Unit Cathode Voltage VKA 18 V Cathode Current Range (Continuous) IKA 100 mA Reference lnput Current Range Iref 6 mA Power Dissipation PD 350 mW RθJA 350 ℃/W Tj 125 ℃ Operating Ambient Temperature Range Topr -40~+85 ℃ Storage temperature Range Tstg -40~+150 ℃ Thermal Resistance from Junction to Ambient Operating Junction Temperature www.umw-ic.com 1 友台半导体有限公司 UMW R UMW TL432 Adjustable Accurate Reference Source ELECTRICAL CHARACTERISTICS (Ta=25℃ unless otherwise specified) Parameter Symbol Test Condition Min Typ Max Unit Vref VKA=VREF, IKA=10mA 1.22 1.25 1.26 V 4.5 16 mV 1 2.5 mV/V 1.5 4 µA 0.2 0.6 µA 0.1 mA 0.05 0.5 µA 0.15 0.5 Ω Reference input voltage (Fig.1) Deviation of reference voltage over full temperature range (Fig 1) VKA =VREF, IKA =10mA △Vref /△T 0℃≤Ta≤70℃ Ratio of change in reference input voltage to the change in cathode △Vref /△VKA IKA=10mA △VKA=1.25V~15V voltage (Fig.2) lref Reference input current (Fig.2) Deviation Of reference input curren over full temperature range (Fig.2) t △lref /△T Minimum cathode current for regulation (Fig.1) Off-state cathode Current (Fig.3) Dynamic impedance lKA=10mA, R1=10kΩ R2=∞ lKA=10mA, R1=10kΩ R2=∞ 0℃≤Ta≤70℃ IKA(min) VKA=VREF, IKA=10mA IKA(OFF) VKA=36V,VREF=0 ZKA VKA=VREF, lKA=1 to100mA f≤1.0kHz Note: TMIN=-25℃ ,TMAX=+85℃ CLASSIFICATION of Vref Rank 0.5％ 1.00% Range 1.234-1.246 1.228-1.252 Figure 1. Test Circuit for VKA = Vref www.umw-ic.com Figure 2. Test Circuit for VKA >Vref 2 Figure 3. Test Circuit for Ioff 友台半导体有限公司 UMW R UMW TL432 Adjustable Accurate Reference Source www.umw-ic.com 3 友台半导体有限公司