MC78T05CT ON Semiconductor, MC78T05CT Datasheet - Page 6

• Manufacturer Part Number: MC78T05CT
• Description: IC REG VOLT POS 3A 5V TO220AB
• Manufacturer: ON Semiconductor

Specifications of MC78T05CT

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 35V
• Voltage - Dropout (typical): 2.2V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Limit (min): -
• Other names: MC78T05CTOS

immunity to changes in load, input voltage, power
dissipation, and temperature. Line and load regulation are
tested with a pulse of short duration (< 100 s) and are
strictly a function of electrical gain. However, pulse widths
of longer duration (> 1.0 ms) are sufficient to affect
temperature gradients across the die. These temperature
gradients can cause a change in the output voltage, in
addition to changes caused by line and load regulation.
Longer pulse widths and thermal gradients make it
desirable to specify thermal regulation.
voltage caused by a change in dissipated power for a
specified time, and is expressed as a percentage output
voltage change per watt. The change in dissipated power
The performance of a voltage regulator is specified by its
Thermal regulation is defined as the change in output
Figure 1. MC78T05AC Line and Thermal Regulation
VOLTAGE REGULATOR PERFORMANCE
Representative Schematic Diagram
MC78T00 Series
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can be caused by a change in either the input voltage or the
load current. Thermal regulation is a function of IC layout
and die attach techniques, and usually occurs within 10 ms
of a change in power dissipation. After 10 ms, additional
changes in the output voltage are due to the temperature
coefficient of the device.
of a typical MC78T05AC to a 20 W input pulse. The
variation of the output voltage due to line regulation is
labeled
of a typical MC78T05AC to a 20 W load pulse. The output
voltage variation due to load regulation is labeled
thermal regulation component is labeled
Figure 2. MC78T05AC Load and Thermal Regulation
. Figure 2 shows the load and thermal regulation response
Figure 1 shows the line and thermal regulation response
and the thermal regulation component is labeled
.
and the