Order this document by MC7800/D
MC7800,
MC7800A, LM340,
Three-Terminal Positive
Voltage Regulators
These voltage regulators are monolithic integrated circuits designed as
fixed–voltage regulators for a wide variety of applications including local,
on–card regulation. These regulators employ internal current limiting,
thermal shutdown, and safe–area compensation. With adequate heatsinking
they can deliver output currents in excess of 1.0 A. Although designed
primarily as a fixed voltage regulator, these devices can be used with
external components to obtain adjustable voltages and currents.
LM340A Series
THREE–TERMINAL
POSITIVE FIXED
VOLTAGE REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
•
•
•
•
•
Output Current in Excess of 1.0 A
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe–Area Compensation
Output Voltage Offered in 2% and 4% Tolerance
Available in Surface Mount D2PAK and Standard 3–Lead Transistor
Packages
Previous Commercial Temperature Range has been Extended to a
Junction Temperature Range of –40°C to +125°C
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
1
2
3
Pin 1. Input
2. Ground
3. Output
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MC7805AC
LM340AT–5
MC7805C
LM340T–5
MC7806AC
MC7806C
MC7808AC
MC7808C
MC7809C
MC7812AC
LM340AT–12
60V
6.0
8.0
80V
9.0 V
12 V
5.0
50V
MC7812C
LM340T–12
MC7815AC
LM340AT–15
MC7815C
LM340T–15
MC7818AC
MC7818C
MC7824AC
MC7824C
18 V
24 V
15 V
12 V
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
(D2PAK)
1
2
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
STANDARD APPLICATION
Input
Cin*
0.33
µF
MC78XX
Output
CO**
ORDERING INFORMATION
Device
MC78XXACT
Insertion Mount
LM340AT–XX
MC78XXACD2T
MC78XXCT
LM340T–XX
MC78XXCD2T
XX indicates nominal voltage.
4%
Surface Mount
TJ = –40° to +125°C
40°
125°C
Insertion Mount
2%
Surface Mount
Output Voltage
Tolerance
Operating
Temperature Range
Package
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 input
ripple voltage.
XX, These two digits of the type number
indicate nominal voltage.
* Cin is required if regulator is located an
appreciable distance from power supply
filter.
** CO is not needed for stability; however,
it does improve transient response. Values
of less than 0.1
µF
could cause instability.
©
Motorola, Inc. 1997
Rev 5
MOTOROLA ANALOG IC DEVICE DATA
1
MC7800, MC7800A, LM340, LM340A Series
MAXIMUM RATINGS
(TA = 25°C, unless otherwise noted.)
Rating
Input Voltage (5.0 – 18 V)
Input Voltage
(24 V)
Power Dissipation
Case 221A
TA = 25°C
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 936 (D2PAK)
TA = 25°C
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Storage Junction Temperature Range
Operating Junction Temperature
NOTE:
ESD data available upon request.
Symbol
VI
Value
35
40
Unit
Vdc
PD
R
θJA
R
θJC
PD
R
θJA
R
θJA
Tstg
TJ
Internally Limited
65
5.0
Internally Limited
See Figure 13
5.0
–65 to +150
+150
W
°C/W
°C/W
W
°C/W
°C/W
°C
°C
Representative Schematic Diagram
MC7800
LAT
Q17
Vin
R24
50
LAT 3 A
Q18
Q19
QNPN
C3
Q10
QNPN
R18
100 k
R22
100
Q7
QNPN
R17
9.0 k
D1
Zener
R1
10.66 k
Q8
QNPN
R2
1.56 k
R5
4.5 k
Q14
QNPN
Q1
C2
3.0 P
N+
QNPN 6
Q13
QNPN
R6
1.0 k
R7
14 k
Q4
QNPN
Q3
QNPN
C1
30 P
R21
600
1.0 P
D2
Zener
R19
27.5 k
Q20
QNPN
R14
1.0 k
R15
680
R23
0.2
Vout
5.01
R30
18 k
Sense
Q5
QNPN 2
Q9
QNPN 2
Q12
QNPN
R11
15 k
Q15
QNPN
R20
17500
R16
600
R10
3340–(3316ACT)
R12
3.0 k
R25
6.0 k
R26
3.0 k
R29
9.0 k
R28
9.0 k
R27
9.0 k
Q6
QNPN
R9
3.0 k
SUB
Q11 2
R13
11660
Q2
Q16
QNPN 4
Diode
R3
1.8 k
R8
5.0 k
This device contains 22 active transistors.
2
MOTOROLA ANALOG IC DEVICE DATA
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS
(Vin = 10 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7805C/LM340T–5
Characteristic
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PD
≤
15 W)
7.0 Vdc
≤
Vin
≤
20 Vdc
8.0 Vdc
≤
Vin
≤
20 Vdc
Line Regulation (Note 2)
7.5 Vdc
≤
Vin
≤
20 Vdc, 1.0 A
8.0 Vdc
≤
Vin
≤
12 Vdc
Load Regulation (Note 2)
5.0 mA
≤
IO
≤
1.0 A
5.0 mA
≤
IO
≤
1.5 A (TA = 25°C)
Quiescent Current
Quiescent Current Change
7.0 Vdc
≤
Vin
≤
25 Vdc
5.0 mA
≤
IO
≤
1.0 A (TA = 25°C)
Ripple Rejection
8.0 Vdc
≤
Vin
≤
18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Output Noise Voltage (TA = 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
VO
VO
4.75
–
Regline
–
–
Regload
–
-
IB
∆I
B
–
–
RR
VI – VO
Vn
rO
ISC
Imax
TCVO
62
–
–
–
–
–
–
0.3
0.08
83
2.0
10
0.9
0.6
2.2
–0.3
1.0
0.8
–
–
–
–
–
–
–
dB
Vdc
µV/V
O
mΩ
A
A
mV/°C
–
1.3
1.3
3.2
25
25
6.5
mA
mA
0.5
0.8
20
10
mV
5.0
–
5.25
–
mV
Min
4.8
Typ
5.0
Max
5.2
Unit
Vdc
Vdc
ELECTRICAL CHARACTERISTICS
(Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7805AC/LM340AT–5
Characteristic
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PD
≤
15 W)
7.5 Vdc
≤
Vin
≤
20 Vdc
Line Regulation (Note 2)
7.5 Vdc
≤
Vin
≤
25 Vdc, IO = 500 mA
8.0 Vdc
≤
Vin
≤
12 Vdc, IO = 1.0 A
8.0 Vdc
≤
Vin
≤
12 Vdc, IO = 1.0 A, TJ = 25°C
7.3 Vdc
≤
Vin
≤
20 Vdc, IO = 1.0 A, TJ = 25°C
Load Regulation (Note 2)
5.0 mA
≤
IO
≤
1.5 A, TJ = 25°C
5.0 mA
≤
IO
≤
1.0 A
250 mA
≤
IO
≤
750 mA
Quiescent Current
Quiescent Current Change
8.0 Vdc
≤
Vin
≤
25 Vdc, IO = 500 mA
7.5 Vdc
≤
Vin
≤
20 Vdc, TJ = 25°C
5.0 mA
≤
IO
≤
1.0 A
Ripple Rejection
8.0 Vdc
≤
Vin
≤
18 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Symbol
VO
VO
Regline
–
–
–
–
Regload
–
–
–
IB
∆I
B
–
–
–
RR
VI – VO
68
–
0.3
–
0.08
83
2.0
0.8
0.8
0.5
–
–
dB
Vdc
–
1.3
0.8
0.53
3.2
25
25
15
6.0
mA
mA
0.5
0.8
1.3
4.5
10
12
4.0
10
mV
Min
4.9
4.8
Typ
5.0
5.0
Max
5.1
5.2
Unit
Vdc
Vdc
mV
NOTES:
1. Tlow = –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
Thigh = +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. 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 cycle is used.
MOTOROLA ANALOG IC DEVICE DATA
3
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS (continued)
(Vin = 10 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7805AC/LM340AT–5
Characteristic
Output Noise Voltage (TA = 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance (f = 1.0 kHz)
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
Vn
rO
ISC
Imax
TCVO
Min
–
–
–
–
–
Typ
10
0.9
0.2
2.2
–0.3
Max
–
–
–
–
–
Unit
µV/V
O
mΩ
A
A
mV/°C
NOTES:
1. Tlow = –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
Thigh = +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. 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 cycle is used.
ELECTRICAL CHARACTERISTICS
(Vin = 11 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7806C
Characteristic
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PD
≤
15 W)
8.0 Vdc
≤
Vin
≤
21 Vdc
9.0 Vdc
≤
Vin
≤
21 Vdc
Line Regulation, TJ = 25°C (Note 2)
8.0 Vdc
≤
Vin
≤
25 Vdc
9.0 Vdc
≤
Vin
≤
13 Vdc
Load Regulation, TJ = 25°C (Note 2)
5.0 mA
≤
IO
≤
1.5 A
Quiescent Current (TJ = 25°C)
Quiescent Current Change
8.0 Vdc
≤
Vin
≤
25 Vdc
5.0 mA
≤
IO
≤
1.0 A
Ripple Rejection
9.0 Vdc
≤
Vin
≤
19 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Output Noise Voltage (TA = 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
VO
VO
5.7
–
Regline
–
–
Regload
IB
∆I
B
–
–
RR
VI – VO
Vn
rO
ISC
Imax
TCVO
58
–
–
–
–
–
–
0.3
0.08
65
2.0
10
0.9
0.2
2.2
–0.3
1.3
0.5
–
–
–
–
–
–
–
dB
Vdc
µV/V
O
mΩ
A
A
mV/°C
–
–
0.5
0.8
1.3
3.3
24
12
30
8.0
mV
mA
mA
6.0
–
6.3
–
mV
Min
5.75
Typ
6.0
Max
6.25
Unit
Vdc
Vdc
NOTES:
1. Tlow = –40°C for MC78XXAC, C
Thigh = +125°C for MC78XXAC, C
2. 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 cycle is used.
4
MOTOROLA ANALOG IC DEVICE DATA
MC7800, MC7800A, LM340, LM340A Series
ELECTRICAL CHARACTERISTICS
(Vin = 11 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7806AC
Characteristic
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PD
≤
15 W)
8.6 Vdc
≤
Vin
≤
21 Vdc
Line Regulation (Note 2)
8.6 Vdc
≤
Vin
≤
25 Vdc, IO = 500 mA
9.0 Vdc
≤
Vin
≤
13 Vdc, IO = 1.0 A
Load Regulation (Note 2)
5.0 mA
≤
IO
≤
1.5 A, TJ = 25°C
5.0 mA
≤
IO
≤
1.0 A
250 mA
≤
IO
≤
750 mA
Quiescent Current
Quiescent Current Change
9.0 Vdc
≤
Vin
≤
25 Vdc, IO = 500 mA
9.0 Vdc
≤
Vin
≤
21 Vdc, IO = 1.0 A, TJ = 25°C
5.0 mA
≤
IO
≤
1.0 A
Ripple Rejection
9.0 Vdc
≤
Vin
≤
19 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Output Noise Voltage (TA = 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance (f = 1.0 kHz)
Short Circuit Current Limit (TA = 25°C)
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
VO
VO
Regline
–
–
Regload
–
–
–
IB
∆I
B
–
–
–
RR
VI – VO
Vn
rO
ISC
Imax
TCVO
58
–
–
–
–
–
–
–
–
–
65
2.0
10
0.9
0.2
2.2
–0.3
0.8
0.8
0.5
–
–
–
–
–
–
–
dB
Vdc
µV/V
O
mΩ
A
A
mV/°C
–
1.3
0.9
0.2
3.3
25
25
15
6.0
mA
mA
5.0
1.4
12
15
mV
Min
5.88
5.76
Typ
6.0
6.0
Max
6.12
6.24
Unit
Vdc
Vdc
mV
ELECTRICAL CHARACTERISTICS
(Vin = 14 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7808C
Characteristic
Output Voltage (TJ = 25°C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PD
≤
15 W)
10.5 Vdc
≤
Vin
≤
23 Vdc
Line Regulation, TJ = 25°C, (Note 2)
10.5 Vdc
≤
Vin
≤
25 Vdc
11 Vdc
≤
Vin
≤
17 Vdc
Load Regulation, TJ = 25°C (Note 2)
5.0 mA
≤
IO
≤
1.5 A
Quiescent Current
Quiescent Current Change
10.5 Vdc
≤
Vin
≤
25 Vdc
5.0 mA
≤
IO
≤
1.0 A
Ripple Rejection
11.5 Vdc
≤
Vin
≤
18 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
Output Noise Voltage (TA = 25°C)
10 Hz
≤
f
≤
100 kHz
NOTES:
1. Tlow = –40°C for MC78XXAC, C
Symbol
VO
VO
Regline
Min
7.7
7.6
Typ
8.0
8.0
Max
8.3
8.4
Unit
Vdc
Vdc
mV
–
–
Regload
IB
∆I
B
–
–
RR
VI – VO
Vn
56
–
–
–
–
6.0
1.7
1.4
3.3
–
–
62
2.0
10
32
16
35
8.0
1.0
0.5
–
–
–
dB
Vdc
µV/V
O
mV
mA
mA
Thigh = +125°C for MC78XXAC, C
2. 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 cycle is used.
MOTOROLA ANALOG IC DEVICE DATA
5
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