MC79L12ACP Fairchild Semiconductor, MC79L12ACP Datasheet - Page 5

• Manufacturer Part Number: MC79L12ACP
• Description: Linear Regulators - Standard Negative Voltage Reg 3Terminal 1a
• Manufacturer: Fairchild Semiconductor

Specifications of MC79L12ACP

• Polarity: Negative
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: - 12 V
• Output Current: 100 mA
• Line Regulation: 250 mV
• Load Regulation: 100 mV
• Dropout Voltage (max): 1.7 V
• Input Voltage Max: 40 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Package / Case: TO-92
• Mounting Style: Through Hole
• Voltage Regulation Accuracy: 5 %
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Design Considerations
designed with Thermal Overload Protections that shuts
down the circuit when subjected to an excessive power
overload condition, Internal Short Circuit Protection that
limits the maximum current the circuit will pass.
capacitors are not required. However, it is recommended
that the regulator input be bypassed with a capacitor if the
regulator is connected to the power supply filter with long
wire length, or if the output load capacitance is large. An
input bypass capacitor should be selected to provide good
The MC79L00, A Series of fixed voltage regulators are
In many low current applications, compensation
Figure 2. Positive and Negative Regulator
+V
−V
0.33mF
0.33mF
in
in
MC78LXX
MC79LXX
0.1mF
0.1mF
MC79L00, MC79L00A Series
APPLICATIONS INFORMATION
+V
−V
O
O
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high−frequency characteristics to insure stable operation
under all load conditions. A 0.33 mF or larger tantalum,
mylar, or other capacitor having low internal impedance at
high frequencies should be chosen. The bypass capacitor
should be mounted with the shortest possible leads directly
across the regulator’s input terminals. Normally good
construction techniques should be used to minimize ground
loops and lead resistance drops since the regulator has no
external sense lead. Bypassing the output is also
recommended.
A common ground is required between the input and the output
voltages. The input voltage must remain typically 2.0 V above
the output voltage even during the low point on the ripple voltage.
** C
* C
*
Input
distance from the power supply filter
O
I
C
0.33mF
is required if regulator is located an appreciable
I
improves stability and transient response.
*
Figure 3. Standard Application
MC79LXX
C
0.1mF
O
**
Output