The SG78xxA/SG78xx series of positive regulators offer self-contained, fixed-voltage capability with up to 1.5 A of load current and input voltage up to 50 V (SG78xxA series only).
These units feature a unique on-chip trimming system to set the output voltages to within ±1.5% of nominal on the SG78xxA series with ±2.0% on the SG78xx series. The SG78xxA versions also offer much-improved line and load regulation characteristics. An improved bandgap reference design eliminates problems such as drift in output voltage and large changes in the line and load regulation normally associated with the Zener diode references.
All protective features of thermal shutdown, current limiting, and safe-area control have been designed into these units. Since these regulators require only a small output capacitor for satisfactory performance, ease of application is assured.
Although designed as fixed-voltage regulators, the output voltage can be increased by using a simple voltage divider. The low quiescent drain current of the device ensures good regulation when this method is used.
The product is in hermetically sealed TO-257 (both cases grounded ‘G’ and isolated ‘IG’), TO-3, TO-39, and leadless chip carrier (LCC) packages.
Feature
- Output Voltage Set Internally to ±1.5% on SG78xxA
- Input Voltage Range to 50 V max on SG78xxA
- 2 V Input-Output Differential
- Excellent Line and Load Regulation
- Fold back Current Limiting
- Thermal Overload Protection
- Voltages Available: 5 V, 12 V, 15 V
- Contact Factory for Other Voltage Options
- Available in Surface Mount Package
