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UC29431D from TI/UNITRODE, Texas Instruments 8pcs , SOP8,Precision Adjustable Shunt Regulator
Partno Mfg Dc Qty Available
UC29431D TI/UNITRODE N/a 8
UC29431D from TI, Texas Instruments 107pcs , SOP,Precision Adjustable Shunt Regulator
MAXIMUM RATINGSSupply Voltage: V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36VDIL-8, SOIC-8 (Top View)Regulated Output: V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36VN or J, D PackageInternal Resistors: R1, R2, R3. . . . . . . . . . . . . . . . . . . . . . . 13VE/A Input: SENSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6VE/A Compensation: COMP . . . . . . . . . . . . . . . . . . . . . . . . . . 6VOutput Sink Current: I. . . . . . . . . . . . . . . . . . . . . . . . . . . 140mAPower Dissipation at T ≤25°C (DIL-8). . . . . . . . . . . . . . . . . 1WADerate 8mW/°C for T > 25°CAStorage Temperature Range . . . . . . . . . . . . . –65°C to +150°CJunction Temperature. . . . . . . . . . . . . . . . . . . –55°C to +150°CLead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300°CCurrents are positive into, negative out of the specified termi-nal. Consult Packaging Section of Databook for thermal limita-tions and considerations of packages.FEATURES DESCRIPTION• Multiple On-Chip Programmable The UC39431 is an adjustable shunt voltage regulator with 100mA sink ca-Reference Voltagespability. The architecture, comprised of an error amplifier andtransconductance amplifier, gives the user separate control of the small• 0.4% Initial Accuracysignal error voltage frequency response along with a fixed linear• 0.7% Overall Reference Tolerancetransconductance. A minimum 3MHz gain bandwidth product for both theerror and transconductance amplifiers assures fast response. In addition to• 2.2V to 36.0V Operating Supplyexternal programming, the IC has three internal resistors that can be con-Voltage and User Programmablenected in six different configurations to provide regulated voltages of 2.82V,Reference3.12V, 5.1V, 7.8V, 10.42V, and 12.24V. A sister device (UC39432) provides• 36.0V Operating Supply Voltageaccess to the non-inverting error ampilifer input and reference, while elimi-nating the three internal resistors.• Reference Accuracy Maintained ForEntire Range of Supply Voltage• Superior Accuracy and EasierCompensation for OptoisolatorApplication• Improved Architecture Provides aKnown Linear Transconductance witha +5% Typical Tolerance

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