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MC78M24CT 데이터시트 PDF




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부품번호 MC78M24CT 기능
기능 Three-Terminal MEDIUM Current Positive Voltage Regulators
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MC78M24CT 데이터시트, 핀배열, 회로
MC78M00, MC78M00A
Series
Three-Terminal
Medium Current Positive
Voltage Regulators
The MC78M00/MC78M00A Series positive voltage regulators are
identical to the popular MC7800 Series devices, except that they are
specified for only half the output current. Like the MC7800 devices,
the MC78M00 three–terminal regulators are intended for local,
on–card voltage regulation.
Internal current limiting, thermal shutdown circuitry and safe–area
compensation for the internal pass transistor combine to make these
devices remarkably rugged under most operating conditions.
Maximum output current, with adequate heatsinking is 500 mA.
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe–Area Compensation
MC78M00A High Accuracy (±2%) Available for 5.0 V, 8.0 V, 12 V
and 15 V
Representative Schematic Diagram
1.0 k 1.0 k
300
3.6
k
6.4
k
210
6.7
V 16 k
1.0 k
100
200
3.0 k
5.6 k
300
6.0 k
2.0 k 3.9 k
40
pF
50 200
Input
0.24
13
Output
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1
2
3
MARKING
DIAGRAMS
TO–220
T SUFFIX
CASE 221A
Heatsink surface
connected to Pin 2.
MC
78MxxZT
ALYWW
1
3
DPAK
DT SUFFIX
CASE 369A
8MxxZ
ALYWW
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
Pin 1. Input
2. Ground
3. Output
xx = Voltage Option
Z = A, B, or C Option
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
6.0 2.8 k
k
This device contains 28 active transistors.
Gnd
© Semiconductor Components Industries, LLC, 2000
April, 2000 – Rev. 7
1
Publication Order Number:
MC78M00/D




MC78M24CT pdf, 반도체, 판매, 대치품
MC78M00, MC78M00A Series
MC78M09C/B ELECTRICAL CHARACTERISTICS (VI = 15 V, IO = 350 mA, 0°C < TJ < 125°C, PD 5.0 W, unless otherwise noted.)
Characteristics
Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C)
VO 8.64 9.0
Output Voltage Variation
(11.5 Vdc VI 23 Vdc, 5.0 mA IO 350 mA)
VO 8.55 –
Line Regulation
(TJ = 25°C, 11.5 Vdc VI 25 Vdc, IO = 200 mA)
Regline
6.0
Load Regulation
(TJ = 25°C, 5.0 mA IO 500 mA)
(TJ = 25°C, 5.0 mA IO 200 mA)
Regload
25
10
Input Bias Current (TJ = 25°C)
IIB – 3.2
Quiescent Current Change
(11.5 Vdc VI 25 Vdc, IO = 200 mA)
(5.0 mA IO 350 mA)
IIB
––
––
Output Noise Voltage (TA = 25°C, 10 Hz f 100 kHz)
Vn – 52
Ripple Rejection
(IO = 100 mA, f = 120 Hz, 12.5 V VI 22.5 V)
(IO = 300 mA, f = 120 Hz, 12.5 V VI 22.5 V, TJ = 25°C)
RR
56 –
56 80
Dropout Voltage
(TJ = 25°C)
VI–VO – 2.0
Short Circuit Current Limit (TJ = 25°C, VI = 35 V)
IOS – 50
Average Temperature Coefficient of Output Voltage
(IO = 5.0 mA)
VO/T – ±0.2
Peak Output Current
(TJ = 25°C)
IO – 700
MC78M12C/AC/B ELECTRICAL CHARACTERISTICS (VI = 19 V, IO = 350 mA, 0°C < TJ < 125°C, PD 5.0 W,
unless otherwise noted.)
9.45
9.45
50
180
90
6.0
0.8
0.5
Vdc
Vdc
mV
mV
mA
mA
µV
dB
Vdc
mA
mV/°C
mA
Characteristics
Symbol Min Typ Max Unit
Output Voltage (TJ = 25°C)
MC78M12C
MC78M12AC
VO Vdc
11.50 12 12.50
11.76 12 12.24
Output Voltage Variation
(14.5 Vdc VI 27 Vdc, 5.0 mA IO 350 mA)
MC78M12C
MC78M12AC
VO Vdc
11.4 – 12.6
11.5 – 12.5
Line Regulation
(TJ = 25°C, 14.5 Vdc VI 30 Vdc, IO = 200 mA)
Load Regulation
(TJ = 25°C, 5.0 mA IO 500 mA)
(TJ = 25°C, 5.0 mA IO 200 mA)
Input Bias Current (TJ = 25°C)
Quiescent Current Change
(14.5 Vdc VI 30 Vdc, IO = 200 mA)
(5.0 mA IO 350 mA)
Output Noise Voltage (TA = 25°C, 10 Hz f 100 kHz)
Regline
Regload
IIB
IIB
Vn
8.0 50 mV
mV
25 240
10 120
3.2 6.0 mA
mA
– 0.8
– 0.5
75 – µV
Ripple Rejection
(IO = 100 mA, f = 120 Hz, 15 V VI 25 V)
(IO = 300 mA, f = 120 Hz, 15 V VI 25 V, TJ = 25°C)
Dropout Voltage
(TJ = 25°C)
Short Circuit Current Limit (TJ = 25°C, VI = 35 V)
Average Temperature Coefficient of Output Voltage
(IO = 5.0 mA)
Peak Output Current
(TJ = 25°C)
RR
55 –
55 80
VI–VO – 2.0
IOS – 50
VO/T – ±0.3
IO – 700
dB
– Vdc
– mA
– mV/°C
– mA
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MC78M24CT 전자부품, 판매, 대치품
MC78M00, MC78M00A Series
DEFINITIONS
Line Regulation – The change in output voltage for a
change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.
Load Regulation – The change in output voltage for a
change in load current at constant chip temperature.
Maximum Power Dissipation – The maximum total
device dissipation for which the regulator will operate
within specifications.
Input Bias Current – That part of the input current that
is not delivered to the load.
Output Noise Voltage – The rms AC voltage at the
output, with constant load and no input ripple, measured
over a specified frequency range.
Long Term Stability – Output voltage stability under
accelerated life test conditions with the maximum rated
voltage listed in the devices’ electrical characteristics and
maximum power dissipation.
100
Free Air
PD(max) for TA = 50°C
2.4
90 Mounted
2.0
Vertically
80
Minimum
70 Size Pad
60
2.0 oz. Copper
L
1.6
ÎÎÎÎL 1.2
ÎÎÎÎÎÎÎÎ0.8
50 0.4
RθJA
40 0
0 5.0 10 15 20 25 30
L, LENGTH OF COPPER (mm)
Figure 1. DPAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
10
5.0
θHS = 10°C/W
Infinite Heat
Sink
3.0 θHS = 20°C/W
2.0
No Heat Sink
1.0
0.5
0.3
0.2 θJC = 5°C/W
PD(max) = 7.52 W
0.1
25 50
75
100 125
TA, AMBIENT TEMPERATURE (°C)
150
Figure 2. Worst Case Power Dissipation
versus Ambient Temperature (TO–220)
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