L78M12ABDT STMicroelectronics

L78MxxAB L78MxxAC Precision 500 mA regulators Datasheet production data Features Output current to 0.5 A Output voltages of 5 6 8 9 10 12 15 24 V Thermal overload protection Short circuit protection Output transition SOA protection 2 % output voltage tolerance TO-220 DPAK Guaranteed in extended temperature range Description The L78MxxA series of three-terminal positive regulators is available in TO-220 and DPAK packages and with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shutdown and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents. Table 1. Device summary Part numbers L78M05AB L78M12AB L78M05AC L78M12AC L78M06AB L78M15AB L78M08AB L78M24AB L78M09AB L78M24AC L78M10AB May 2012 Doc ID 2147 Rev 13 1/31 This is information on a product in full production. www.st.com 31Contents L78MxxAB, L78MxxAC Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.1 Design considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 9 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2/31 Doc ID 2147 Rev 13