The NCP431/NCP432 integrated circuits are three−terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V using two external resistors.

FEATUREs
• Programmable Output Voltage to 36 V
• Low Minimum Operating Current: 40 A, Typ @ 25°C
• Voltage Reference Tolerance: ±0.5%, Typ @ 25°C (NCP431B/NCP432B)
• Low Dynamic Output Impedance, 0.22  Typical
• Sink Current Capability of 40 A to 100 mA
• Equivalent Full−Range Temperature Coefficient of 50 ppm/°C Typical
• Temperature Compensated for Operation over Full Rated Operating Temperature Range
• SC Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
• These are Pb−Free Devices

Typical Applications
• Voltage Adapters
• Switching Power Supply
• Precision Voltage Reference
• Charger
• Instrumentation