MC78T05C ON, MC78T05C Datasheet

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MC78T05C

Manufacturer Part Number
MC78T05C
Description
THREE-AMPERE POSITIVE FIXED VOLTAGE REGULATORS
Manufacturer
ON
Datasheet
MC78T00 Series
3.0 A Positive Voltage
Regulators
circuits capable of driving loads in excess of 3.0 A. These
three−terminal regulators employ internal current limiting, thermal
shutdown, and safe−area compensation. Devices are available with
improved specifications, including a 2% output voltage tolerance, on
AC−suffix 5.0 V, 12 V and 15 V device types.
devices can be used with external components to obtain adjustable
voltages and currents. This series of devices can be used with a
series−pass transistor to supply up to 15 A at the nominal output
voltage.
March, 2004 − Rev. 4
This family of fixed voltage regulators are monolithic integrated
Although designed primarily as a fixed voltage regulator, these
XX these two digits of the type number indicate voltage.
must remain typically 2.2 V above the output voltage even during the low point on the input
ripple voltage.
Output Current in Excess of 3.0 A
Power Dissipation: 25 W
No External Components Required
Output Voltage Offered in 2% and 4% Tolerance*
Thermal Regulation is Specified
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe−Area Compensation
Pb−Free Packages are Available
Semiconductor Components Industries, LLC, 2004
A common ground is required between the input and the output voltages. The input voltage
** C
**
** C
(See Applications Information for details.)
in
O
is required if regulator is located an appreciable distance from power supply filter.
is not needed for stability; however, it does improve transient response.
0.33 mF
Input
C
Figure 1. Simplified Application
in
*
MC78TXX
C
O
Output
**
www.DataSheet4U.com
1
*Heatsink surface is connected to Pin 2.
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
1
MC
A = Assembly Location
WL= Wafer Lot
Y = Year
W = Work Week
2
xx = Voltage Option
y = “A” letter for precise 2% regulators, not
z = temperature range, “B” for wide
VOLTAGE REGULATORS
3
= Specific Device Code
used for standard 4% regulators.
temperature range, −40 C to +125 C, “C”
for standard temperature range,
0 C to +125 C.
ORDERING INFORMATION
POSITIVE FIXED
http://onsemi.com
CASE 221A
Pin 1. Input
CASE 936
T SUFFIX
D
TO−220
2
3 A
PAK−3
2. Ground*
3. Output
Publication Order Number:
DIAGRAMS
MARKING
78TxxyzD2T
AWLYWW
AWLYWW
78TxxyzT
MC78T00/D
MC
MC

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MC78T05C Summary of contents

Page 1

... Figure 1. Simplified Application A common ground is required between the input and the output voltages. The input voltage must remain typically 2.2 V above the output voltage even during the low point on the input ripple voltage. XX these two digits of the type number indicate voltage required if regulator is located an appreciable distance from power supply filter ...

Page 2

... Symbol Value Internally Limited qJA P Internally Limited D R 2.5 qJC T +150 stg +125 max max P (Note 2), unless otherwise noted.) O max MC78T05C Max Min Typ Max 5.1 4.8 5.0 5.2 5.2 4.75 5.0 5.25 25 − 3 − − 0.01 − 0.002 0.03 5.0 − 3.5 5.0 6.0 − ...

Page 3

... +25 C Reg Reg = + 5.0 mA max http://onsemi.com 3 P (Note 2), unless otherwise noted.) max MC78T05C Max Min Typ Max − − 1.5 − − − 5.0 − − − 0.2 − max due to heating effects must be taken into account ...

Page 4

... J Average Temperature Coefficient of Output Voltage (I = 5.0 mA Although power dissipation is internally limited, specifications apply only for P 7. Line and load regulation are specified at constant junction temperature. Changes in V separately. Pulse testing with low duty cycle is used. MC78T00 Series ( 3 ...

Page 5

... J Average Temperature Coefficient of Output Voltage (I = 5.0 mA Although power dissipation is internally limited, specifications apply only for P 9. Line and load regulation are specified at constant junction temperature. Changes in V separately. Pulse testing with low duty cycle is used. MC78T00 Series ( 3 ...

Page 6

... The performance of a voltage regulator is specified by its immunity to changes in load, input voltage, power dissipation, and temperature. Line and load regulation are tested with a pulse of short duration (< 100 ms) 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 ...

Page 7

... out 1.5 A out 5.0 V out 1.0 10 100 1 100 k f, FREQUENCY (Hz) Figure 6. Ripple Rejection versus Frequency 4 3 125 C J 2.0 1 125 INPUT VOLTAGE (Vdc) in Figure 8 ...

Page 8

... I = 3.0 A out 2.0 I out 1 0.5 A out 1 0.5 −90 −50 − JUNCTION TEMPERATURE ( C) J Figure 10. Dropout Voltage 0.8 V out 0.6 I out 0 0.2 0 −0.2 −0.4 −0.6 1.0 0 TIME (ms) Figure 12. Line Transient Response 2.4 C/W 20 3.3 C/W 10 6.3 C/W 10 Figure 14. Maximum Average Power MC78T00 Series 8 ...

Page 9

... digits of type number indicating voltage. The MC78T00 series can be current boosted with a PNP transistor. The 2N4398 provides current Resistor R in conjunction with the V of the PNP determines when the pass transistor begins conducting; this circuit is not short circuit proof. Input−output differential voltage minimum is increased by the V of the pass transistor ...

Page 10

... V Tol. O MC78T05ABT 2%* MC78T05ACT 2%* MC78T05ACTG 2%* MC78T05BT 4% MC78T05BTG 4% MC78T05CD2T 4% MC78T05CD2TR4 4% MC78T05CT 4% MC78T05CTG 4% MC78T08CT 4% MC78T12ACT 2%* MC78T12BT 4% MC78T12CT 4% MC78T15ABT 2%* MC78T15ACT 2%* MC78T15CT 4% NOTE: Automotive temperature range selections are available with special test conditions and additional tests. Contact your local ON Semiconductor sales office for information. †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D ...

Page 11

... D N MC78T00 Series TO−220 T SUFFIX CASE 221A−09 ISSUE AA NOTES: SEATING 1. DIMENSIONING AND TOLERANCING PER ANSI −T− PLANE Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH DIMENSION Z DEFINES A ZONE WHERE ALL S BODY AND LEAD IRREGULARITIES ARE ALLOWED. DIM ...

Page 12

... SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur ...

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