SC4431: Shunt Regulator With Open Collector Or Output

• Open collector output drives Optoisolator with as little as 1.5 V input voltage
• Trimmed bandgap design – initial accuracies to ± 0.5%
• 40 mA drive capability
• Regulates output as low as 50 mV
• Wide supply voltage range: 1.5 V to 15 V
• Low supply current: typically 110 µA
• Full industrial temperature range
• SOT-23 5-lead package

Typical Application Circuit

Click diagram to enlarge

• Telecom power supplies
• Opto driver for very low output voltage (1.5 V) isolated power supplies
• Battery-operated applications
• Point-of-use power supplies

SOT-23-5

• SC4431CSK-.5 TR: Package Minimum Tape & Reel Only
• SC4431CSK-.5TRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
• SC4431CSK-1 TR: Package Minimum Tape & Reel Only
• SC4431CSK-1 TRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
• SC4431CSK-2 TR: Package Minimum Tape & Reel Only
• SC4431CSK-2TRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only