Datasheet

Typical application LM137, LM337
12/18 Doc ID 2167 Rev 4
* 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 V
O
is larger than - 25 V, D2 protects the LM137 in case the output is
shorted.
Figure 17. Current regulator
Figure 18. Negative regulator with protection diodes