©2002 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.1
Features
• Output Current in Excess of 1A
• Output Voltages of -5, -6, -8 , -9, -10, -12, -15, -18 and -
24V
• Internal Therm al Over load Protection
• Short Circuit Protection
• Output Tra nsistor Safe Operating Area Compensation
Description
The MC79XX / MC79XXA/ LM79XX series of three
terminal negative regulators are available in TO-220
package and with several fixed output voltages, making
them useful in a wide range of applications. Each type
employs internal current limiting, thermal shut down and
safe operating area protection, mak ing it essentially
indestructible.
TO-220
1. GND 2. Input 3. Output
1
Vin
Internal Block Digram
VOLTAGE
REFERENCE
+
-
PROTECTION
CIRCUITRY
R1
R2
Rsc
GND
I1 I2
Out
In
Q1
Q2
Output
Input
MC79XX/MC79XXA/LM79XX
3-Terminal 1A Negative Voltage Regulator
MC79XX/MC79XXA/LM79XX
2
Absolute Maximum Ratings
Note:
1. Thermal resistance test board
Size: 76.2 mm * 114.3mm * 1.6mm(1S0P)
JED E C standar d: JESD51-3, JESD51-7
2. Assume no ambient airflow
Electrical Characteristics (MC7905/LM7905)
(VI = -10V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note
3. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Value Unit
Input Voltage VI-35 V
Thermal Resistance Junction-Case (Note1) RθJC 5°C/W
Thermal Resistance Junction-Air (Note1, 2) RθJA 65
Operating Temperature Range TOPR 0 ~ +125 °C
Storage Temperature Range TSTG -65 ~ +150 °C
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -4.8 -5.0 -5.2 V
IO = 5mA to 1A, PO ≤ 15W
VI = -7V to -20V -4.75 -5.0 -5.25
Line Regulation (Note3) ∆VOTJ = +25°CVI = -7V to -25V - 35 100 mV
VI = -8V to -12V - 8 50
Load Regulation (Note3) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 10 100 mV
TJ =+25°C
IO = 250mA to 750mA -350
Quiescent Current IQTJ =+25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -8V to -25V - 0.1 0.8
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - - 0.4 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA =+25°C-40- µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2- V
Short Circuit Current ISC TJ =+25°C, VI = -35V - 300 - mA
Peak Current IPK TJ =+25°C-2.2-A
MC79XX/MC79XXA/LM79XX
3
Electrical Characteristics (MC7906) (Continued)
(VI = -11V, IO = 500mA, 0°C ≤TJ ≤ +125°C, C I =2.2µF, CO =1µF, unless otherwise specified.)
Note
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -5.75 -6 -6.25 V
IO = 5mA to 1A, PO ≤ 15W
VI = -9V to -21V -5.7 -6 -6.3
Line Regulation (Note1) ∆VOTJ = +25°CVI = -8V to -25V - 10 120 mV
VI = -9V to -13V - 5 60
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 10 120 mV
TJ =+25°C
IO = 250mA to 750mA -360
Quiescent Current IQTJ =+25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -8V to -25V - 0.1 1.3
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -0.5 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA =+25°C- 130 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2- V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
4
Electrical Characteristics (MC7908) (Continued)
(VI = -14V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -7.7 -8 -8.3 V
IO = 5mA to 1A, PO ≤ 15W
VI = -10V to -23V -7.6 -8 -8.4
Line Regulation (Note1) ∆VOTJ = +25°CVI = -10.5V to -25V - 10 160 mV
VI = -11V to -17V - 5 80
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 12 160 mV
TJ =+25°C
IO = 250mA to 750mA -480
Quiescent Current IQTJ =+25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -10.5V to -25V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -0.6 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA =+25°C- 175 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2- V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
5
Electrical Characteristics (MC7909) (Continued)
(VI = -15V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -8.7 -9.0 -9.3 V
IO = 5mA to 1A, PO ≤ 15W
VI = -1.5V to -23V -8.6 -9.0 -9.4
Line Regulation (Note1) ∆VOTJ = +25°CVI = -11.5V to -26V - 10 180 mV
VI = -12V to -18V - 5 90
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 12 180 mV
TJ = +25°C
IO = 250mA to 750mA -490
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -11.5V to -26V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -0.6 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA = +25°C- 175 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2-V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
6
Electrical Characteristics (MC7910) (Continued)
(VI = -17V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -9.6 -10 -10.4 V
IO = 5mA to 1A, Pd ≤ 15W
VI = -12V to -28 -9.5 -10 -10.5
Line Regulation (Note1) ∆VOTJ = +25°CVI = -12.5V to -28V - 12 200 mV
VI = -14V to -20V - 6 100
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 12 200 mV
TJ = +25°C
IO = 250mA to 750mA - 4 100
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -12.5V to -28V - 0 .1 1
Temperature Coefficient of VO∆Vo/∆TI
O = 5mA - -1 - mV/°C
Output Noise Voltage VN10Hz ≤ f ≤ 100kHz
TA =+25°C- 280 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2-V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
7
Electrical Characteristics (MC7912) (Continued)
(VI = -19V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -11.5 -12 -12.5 V
IO = 5mA to 1A, PO ≤ 15W
VI = -15.5V to -27V -11.4 -12 -12.6
Line Regulation (Note1) ∆VOTJ = +25°CVI = -14.5V to -30V - 12 240 mV
VI = -16V to -22V - 6 120
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 12 240 mV
TJ = +25°C
IO = 250mA to 750mA - 4 120
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -14.5V to -30V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -0.8 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA = +25°C- 200 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2- V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
8
Electrical Characteristics (MC7915) (Continued)
(VI = -23V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = + 25°C -14.4 -15 -15.6 V
IO = 5mA to 1A, PO ≤ 15W
VI = -18V to -30V -14.25 -15 -15.75
Line Regulation (Note1) ∆VOTJ = +25°CVI = -17.5V to -30V - 12 300 mV
VI = -20V to -26V - 6 150
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 12 300 mV
TJ = +25°C
IO = 250mA to 750mA - 4 150
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -17.5V to -30V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -0.9 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA =+25°C- 250 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2-V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
9
Electrical Characteristics (MC7918) (Continued)
(VI = -27V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -17.3 -18 -18.7 V
IO = 5mA to 1A, PO ≤ 15W
VI = -22.5V to -33V -17.1 -18 -18.9
Line Regulation (Note1) ∆VOTJ = +25°CVI = -21V to -33V - 15 360 mV
VI = -24V to -30V - 8 180
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 15 360 mV
TJ = +25°C
IO = 250mA to 750mA - 5 180
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -21V to -33V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -1 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA = +25°C- 300 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2- V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
10
Electrical Characteristics (MC7924) (Continued)
(VI = -33V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -23 -24 -25 V
IO = 5mA to 1A, PO ≤ 15W
VI = -27V to -38V -22.8 -24 -25.2
Line Regulation (Note1) ∆VOTJ = +25°CVI = -27V to -38V - 15 480 mV
VI = -30V to -36V - 8 180
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 15 480 mV
TJ = +25°C
IO = 250mA to 750mA - 5 240
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -27V to -38V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -1 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA = +25°C- 400 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2- V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
11
Electrical Characteristics (MC7905A) (Continued)
(VI = -10V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -4.9 -5.0 -5.1 V
IO = 5mA to 1A, PO ≤ 15W
VI = -7V to -20V - 4.8 -5.0 -5.2
Line Regulation (Note1) ∆VO
TJ = +25°CVI = -7V to -20V IO=1A - 5 50
mV
VI = -8V to -12V IO=1A - 2 25
VI = -7.5V to -25V - 7 50
VI = -8V to -12V , IO=1A - 7 50
Load Regulation (Note1) ∆VOTJ =+25°C, IO = 5mA to 1.5A - 10 100 mV
TJ = +25°C
IO = 250mA to 750mA -350
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -8V to -25V - 0.1 0.8
Temperature Coefficient of
VD∆Vo/∆TI
O = 5mA - - 0.4 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA = +25°C-40- µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2- V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
12
Electrical Characteristics (MC7912A) (Continued)
(VI = -19V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to he at ing e ffe cts mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -11.75 -12 -12.25 V
IO = 5mA to 1A, PO ≤ 15W
VI = -15.5V to -27V -11.5 -12 -12.5
Line Regulation (Note1) ∆VO
TJ = +25°C
VI = -14.5V to -27V
Io = 1A - 12 120
mV
VI = -16V to -22V
Io = 1A -660
VI = -14.8V to -30V - 12 120
VI = -16V to -22V, Io = 1A - 12 120
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 12 150 mV
TJ = +25°C
IO = 250mA to 750mA -475
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -15V to -30V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -0.8 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA = +25°C- 200 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2-V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
13
Electrical Characteristics (MC7915A) (Continued)
(VI = -23V, IO = 500mA, 0°C ≤TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to hea tin g ef fe ct s mus t be t ak en
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VOTJ = +25°C -14.7 -15 -15.3 V
IO = 5mA to 1A, PO ≤ 15W
VI = -18V to -30V -14.4 -15 -15.6
Line Regulation (Note1) ∆VO
TJ = +25°C
VI = -17.5V to -30V
Io = 1A - 12 150
mV
VI = -20V to -26V
Io = 1A -675
VI = -17.9V to -30V - 12 150
VI = -20V to -26V, Io = 1A - 6 150
Load Regulation (Note1) ∆VO
TJ = +25°C
IO = 5mA to 1.5A - 12 150 mV
TJ = +25°C
IO = 250mA to 750mA -475
Quiescent Current IQTJ = +25°C-36mA
Quiescent Current Change ∆IQIO = 5mA to 1A - 0.05 0.5 mA
VI = -18.5V to -30V - 0.1 1
Temperature Coefficient of VD∆Vo/∆TI
O = 5mA - -0.9 - mV/°C
Output Noise Voltage VNf = 10Hz to 100kHz
TA = +25°C- 250 - µV
Ripple Rejection RR f = 120Hz
∆VI = 10V 54 60 - dB
Dropout Voltage VDTJ = +25°C
IO = 1A -2-V
Short Circuit Current ISC TJ = +25°C, VI = -35V - 300 - mA
Peak Current IPK TJ = +25°C-2.2-A
MC79XX/MC79XXA/LM79XX
14
Typical Perfomance Characteristics
Figu re 1. Output Volta ge
Figure 3. Quiescent Current
Figure 5. Short Circuit C urrent
Figure 2. Load Regulation
Figure 4. Dropout Voltage
4.8
4.85
4.9
4.95
5
5.05
5.1
-40 -25 0 25 50 75 100 125
Vin=10V
Io=40mA
Vin=25V
Io=100mA
Ou
tp
ut
Vo
lta
ge
[-
V
]
TA, Ambient Temperature [oC]
Output Voltage[-V]
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
-40 -25 0 25 50 75 100 125
Quiescent Cur rent [mA ]
DtVlt[V]
TA, Ambient Temperature [oC]
-0.1
-0.050
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
-40 -25 0 25 50 75 100 125
Sh
ort
Cir
cui
t
Cu
rre
nt
[A]
T
A
, Ambient Temperature [oC]
Short Circuit Current[A]
-5
-3
-1
1
3
5
7
9
11
13
15
-40 -25 0 25 50 75 100 125
Io=0.75A
Io=1.5A
Lo
ad
Re
gul
ati
on
[m
V]
TA, Ambient Temperature [oC]
Load Regulation[mV]
0
0.5
1
1.5
2
2.5
3
3.5
4
-40-250255075100125
Io=1A
Dropout Voltage [V]
TA, Ambient Temperature [oC]
MC79XX/MC79XXA/LM79XX
15
Typical Applications
Figure 6. Negative Fixed out put regulator
Figure 7. Split power supply ( ±
±±
±12V/1A)
Notes:
(1) To specify an output voltage, substitute voltage value for "XX "
(2) Require d fo r stability . Fo r v alu e g i ve n, c ap acitor mu st be soli d ta nta l um. If alum iniu m ele ctr onics are used, at le as t ten times
value shown should be selected. CI is required if regulator is located an appreciable distance from power supply filter.
(3) To improve transient response. If large capacitors are used, a high current diode from input to output (1N400l or similar)
should be introduced to protect the device from momentary input short circuit.
2.2µ
µµ
µF
2
- VI- VO
KA79XX
1
3
++
1µ
µµ
µF
CICO
Input Output
MC79XX
LM79XX
1N4001
2.2µ
µµ
µF
2
- 15V -12V
KA7912
1
3
++
1µ
µµ
µF
0.33µ
µµ
µF
+ KA7812
+ 15V +12V
+
1µ
µµ
µF
1
2
3
1N4001
GND
*
*
MC7812
MC7912
Co
Co
C1
C1
MC79XX/MC79XXA/LM79XX
16
Mechanical Dimensions
Package Dimensions in millimeters
4.50
±0.20
9.90
±0.20
1.52
±0.10
0.80
±0.10
2.40
±0.20
10.00
±0.20
1.27
±0.10
ø3.60
±0.10
(8.70)
2.80
±0.10
15.90
±0.20
10.08
±0.30
18.95MAX.
(1.70)
(3.70)(3.00)
(1.46)
(1.00)
(45°)
9.20
±0.20
13.08
±0.20
1.30
±0.10
1.30
+0.10
–0.05
0.50
+0.10
–0.05
2.54TYP
[2.54
±0.20
]2.54TYP
[2.54
±0.20
]
TO-220
MC79XX/MC79XXA/LM79XX
17
Ordering Information
Product Number Output Voltage Tolerance Package Operating Temperature
LM7905CT ±4% TO-220 0 ~ +125°C
Product Number Output Voltage Tolerance Package Operating Temperature
MC7905CT
±4%
TO-220 0 ~ +125°C
MC7906CT
MC7908CT
MC7909CT
MC7910CT
MC7912CT
MC7915CT
MC7918CT
MC7924CT
MC7905ACT
±2%MC7912ACT
MC7915ACT
MC79XX/MC79XXA/LM79XX
11/12/02 0.0m 001
Stock#DSxxxxxxxx
2002 Fairchild Semicond uctor Corporation
LIFE SU PP ORT POL ICY
FAIRCHILD’S PRODUCTS AR E NOT AUTHORIZED FOR USE AS C RITICAL COMPONENTS I N LIFE S UPPORT DEVICE S
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORA TION. As used he rein :
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or syst em who se failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effec tiv ene ss.
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DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRO DUCTS HEREIN TO IMPROVE RELIABILITY, FUN C TION OR DESIGN . FAIRCHILD DO ES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
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