Full output current not available
at high input-output voltages
*The 10 μF capacitors are optional to improve ripple rejection
Figure 15. Adjustable Lab Voltage Regulator
Figure 16. Current Regulator
Equation 1.
*When CL is larger than 20 μF, D1 protects the LM137 in case the input supply is shorted
**When C2 is larger than 10 μF and −VOUT is larger than −25V, D2 protects the LM137 in case the output is shorted
Figure 17. Negative Regulator with Protection Diodes
*Minimum output ≃ −1.3V when control input is low
Figure 18. −5.2V Regulator with Electronic Shutdown*