1.0 A Negative Voltage Regulators
MC7900 Series
The MC7900 series of fixed output negative voltage regulators are inten...
1.0 A Negative Voltage
Regulators
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 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
2.0 k
25 2.4 k 14.7 k
Gnd
2.0 k
8.0 k
3.6 k
1.0 k
4.0 k R1
12 k 1.0 k
4.0 k
1.2 k
1.6 k
R2
10 k
VO
20 pF
10 pF 10 k
2.0 k
20 k 20 k
1.1 k
240 0.3
750
This device contains 26 active
transistors.
VI
Figure 1. Representative Schematic Diagram
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TO−220 T SUFFIX CASE 221AB
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.
S...