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DATA SHEET www.onsemi.com Negative Voltage Regulators 1.0 A TO−220 T SUFFIX CASE 221AB MC7900 Series The MC7900 series of fixed output negative voltage regulators are intended as complements to the popular MC7800 series devices. These negative regulators are available in the same seven−voltage op.
le. The G−Suffix Denotes a Pb−Free Lead Finish Heatsink surface connected to Pin 2. 1 2 3 Pin 1. Ground 2. Input 3. Output D2PAK D2T SUFFIX CASE 936 12 3 Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. STANDARD APPLICATION Input Cin* 0.33 mF MC79XX Output CO** 1.0 mF 2.0 k 25 2.4 k 14.7 k 2.0 k 8.0 k Gnd A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0 V above more negative even during the high point of the input ripple voltage. 12 k 1.0 k 4.0 k 3.6 k 1.0 k 4.0 k R1 X.
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