KA431AZ – Programmable Shunt Regulator

The adjustable and fixed voltage regulators of the AMS1117 series are designed to deliver 1A output current and function down to 1V input-to-output difference. The device's dropout voltage is guaranteed to be 1.3V at maximum output current, dropping at lower load currents. Trimming on-chip adjusts the reference voltage to one percent. The current limit is also reduced, reducing stress on the regulator and energy source circuitry under overload conditions. The AMS1117 devices are pin compatible with existing three-terminal SCSI regulators and are available in low-profile surface mount SOT-223 packages, 8L SOIC packages, and TO-252 (DPAK) plastic packages.

The LM1086 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5V at 1.5A of load current. It has the same pin-out as industry standard LM317. The LM1086 is available in an adjustable version, which can set the output voltage with only two external resistors. It is also available in six fixed voltages: 1.8V, 2.5V, 2.85V, 3.3V, 3.45V and 5.0V. The fixed versions integrate the adjust resistors. The LM1086 circuit includes a zener trimmed bandgap reference, current limiting and thermal shutdown.

The LM7809 series of three terminal positive regulators are available in the TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.

Features of NCP1117DT33RKG : Fixed output voltages of 1.5 V, 1.8 V, 1.9 V, 2.0 V, 2.5 V, 2.85 V, 3.3 V, 5.0 V, and 12 V; adjustable output voltage option; no minimum load requirement for fixed voltage output devices; output current in excess of 1.0 A; 1.2 V maximum dropout voltage at 800 mA over temperature; ? Trimmed Reference/Output Voltage to 1.0% These Pb-Free Devices Applications have the following features: ? Operation to 20 V Input ? NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable Applications? of NCP1117DT33RKG Hard drive controllers, switching power supplies, battery chargers, active SCSI termination for 2.85 V versions, consumer and industrial equipment point of regulation, and more.