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MC7912BTG
MC7900 Series 1.0 A Negative Voltage Regulators 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 options as the MC7800 devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the negative MC7900 series. Available in fixed output voltage options from − 5.0 V to − 24 V, these regulators employ current limiting, thermal shutdown, and safe−area compensation − making them remarkably rugged under most operating conditions. With adequate heatsinking they can deliver output currents in excess of 1.0 A. • No External Components Required • Internal Thermal Overload Protection • Internal Short Circuit Current Limiting • Output Transistor Safe−Area Compensation • Available in 2% Voltage Tolerance (See Ordering Information) • Pb−Free Package May be Available. The G−Suffix Denotes a Pb−Free Lead Finish http://onsemi.com TO−220 T SUFFIX CASE 221AB Heatsink surface connected to Pin 2. D2PAK D2T SUFFIX CASE 936 2.0 k 14.7 k 4.0 k 1.0 k 12 k 1.2 k 4.0 k 1.0 k 3 1 2 3 Heatsink surface (shown as terminal 4 in case outline drawing) is connected to Pin 2. 25 2.4 k 8.0 k 3.6 k 2 Pin 1. Ground 2. Input 3. Output Gnd 2.0 k 1 R1 STANDARD APPLICATION 1.6 k R2 MC79XX Input VO 10 k Cin* 0.33 mF Output CO** 1.0 mF 20 pF 10 pF 2.0 k 20 k 20 k 10 k 240 0.3 1.1 k 750 VI This device contains 26 active transistors. Figure 1. Representative Schematic Diagram 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. XX, These two digits of the type number indicate nominal voltage. ** Cin is required if regulator is located an appreciable distance from power supply filter. ** CO improve stability and transient response. ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. DEVICE MARKING INFORMATION See general marking information in the device marking section on page 14 of this data sheet. © Semiconductor Components Industries, LLC, 2013 July, 2013 − Rev. 18 1 Publication Order Number: MC7900/D
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ON Semiconductor
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