AMC DOC. #:AMC78XX_A
November 2001
Copyright 2001, ADD Mic rotech Cor p. 1 www.addmtek.c om
3-Pin Plastic TO-252
Surface Mount
(Top View)
3-Pin Plastic TO-263
Surface Mount
(Top View)
DESCRIPTION FEATURES
The AMC78XX series of three terminal voltage
regulator is designed for a wide range of applications
with different fixed output voltages. One of these
applications is local on card regulation, eliminating the
distribution problems associated with single point
regulation. Although designed primarily as fixed
voltage regulators, these devices can be used with
external components to obtain adjustable voltage and
currents.
The internal current limiting and thermal shutdown
features of these regulators make them essentially
immune to overload. Safe area protection for the
output transistor is provided to limit internal power
dissipation.
! Output current in excess of 1A
! No external components required
! High power dissipation capability
! Internal thermal overload protection
! Internal short-circuit current limiting
# Output transistor safe-area compensation
# Pin assignment identical to earlier LM78XX
series.
APPLICATIONS PACKAGE PIN OUT
3-Pin Plastic TO-220
(Top View)
! Add On Cards
! Logic Systems
! Instrumentation
! Power Supplies
AMC7805 – 5V
AMC7812 – 12V
AMC7824 – 24V
ORDER INFORMATION
Plastic TO-220 Plastic TO-263 Plastic TO-252
TA (OC) T 3-pin ST 3-pin SJ 3-pin
0 to 70 AMC78XXT AMC78XXST AMC78XXSJ
Note: All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e.
AMC78XXSJT).
V
OLTAGE REGULATOR
AMC78XX
V
IN
V
out
GND
V
IN
V
out
GND
A
AA
ADD MICROTECH CORP.
V
IN
V
out
GND
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 2 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Voltage (AMC7805/12) 35V
Input Voltage (AMC7824 only) 40V
Operating Temperature Range, TA 0OC to 70 OC
Maximum Junction Temperature, TJ 150 OC
Storage Temperature Range -65OC to 150OC
Lead Temperature (soldiering, 10 seconds) 260 OC
Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.
Currents are positive into, negative out of the specified terminal.
VIN
VOUT
GND
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 3 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply the operating at specified junction temperatures, VIN = 10V., and
IO = 500mA.
AMC7805
Parameter Symbol Test Co nd itions Min Typ Max Units
TJ = 25 °C 4.80 5.00 5.20
Output Voltage VO 0 °C ≤ TJ ≤ 125 °C, 5mA ≤ IO ≤ 1A,
7.5V ≤ VIN ≤ 20V 4.75 5.00 5.25 V
7.5V ≤ VIN ≤ 20V 3 100
Line Regul ation ∆VOI TJ = 25 °C 8V ≤ VIN ≤ 12V 1 50
mV
5mA ≤ IO ≤ 1A 15 100
Load Regulat ion ∆VOL TJ = 25 °C 250mA ≤ IO ≤ 750mA 5 50
mV
TJ = 25 °C 8
Quiescent Current IQ IO ≤ 1A 0 °C ≤ TJ ≤ 125 °C 8.5
mA
0 °C ≤ TJ ≤ 125 °C, 5mA ≤ IO ≤ 1A 0.5
Quiescent Current Change ∆IQ 0 °C ≤ TJ ≤ 125 °C, 7.5V ≤ VIN ≤ 20V,
IO ≤ 1A 1.3
mA
Ripple Re jection 8V ≤ VIN ≤ 18V, f = 120Hz 62 78 dB
Output Resistance f = 1KHz, 0 °C ≤ TJ ≤ 125 °C 17 mΩ
Temperature Coefficient IO = 5mA, 0 °C ≤ TJ ≤ 125 °C 1.1 mV/ °C
Dropout Voltage IO = 1A, TJ = 25 °C 2.0 V
Short-Circuit Current TJ = 25 °C 750 mA
Peak Output Current TJ = 25 °C 2.2 A
Note : All characteristics are measured with capacitor across the input of 0.22µF, and a capacitor across the output of 0.1µF.
All Characteristi cs except noi se voltage and ri pple rejection ratio are measured using pulse techniques (tw ≤ 10 ms,
duty ≤ 5%). Output voltage changes due to changes in internal temperature must be taken into account separately.
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 4 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply the operating at specified junction temperatures, VIN = 19V., and
IO = 500mA.
AMC7812
Parameter Symbol Test Co nd itions Min Typ Max Units
TJ = 25 °C 11.5 12.0 12.5
Output Voltage VO 0 °C ≤ TJ ≤ 125 °C, 5mA ≤ IO ≤ 1A,
14.5V ≤ VIN ≤ 27V 11.4 12.0 12.6 V
14.5V ≤ VIN ≤ 30V 10 240
Line Regul ation ∆VOI TJ = 25 °C 16V ≤ VIN ≤ 22V 3 120
mV
5mA ≤ IO ≤ 1A 12 240
Load Regulat ion ∆VOL TJ = 25 °C 250mA ≤ IO ≤ 750mA 4 120
mV
TJ = 25 °C 4.3 8
Quiescent Current IQ IO ≤ 1A 0 °C ≤ TJ ≤ 125 °C 8.5
mA
0 °C ≤ TJ ≤ 125 °C, 5mA ≤ IO ≤ 1A 0.5
Quiescent Current Change ∆IQ 0 °C ≤ TJ ≤ 125 °C, 14.8V ≤ VIN ≤ 27V,
IO ≤ 1A 1.3
mA
Ripple Re jection 15V ≤ VIN ≤ 25V, f = 120Hz 55 72 dB
Output Resistance f = 1KHz, 0 °C ≤ TJ ≤ 125 °C 18 mΩ
Temperature Coefficient IO = 5mA, 0 °C ≤ TJ ≤ 125 °C 1.1 mV/ °C
Dropout Voltage IO = 1A, TJ = 25 °C 2.0 V
Short-Circuit Current TJ = 25 °C 350 mA
Peak Output Current TJ = 25 °C 2.2 A
Note : All characteristics are measured with capacitor across the input of 0.22µF, and a capacitor across the output of 0.1µF.
All Characteristi cs except noi se voltage and ri pple rejection ratio are measured using pulse techniques (tw ≤ 10 ms,
duty ≤ 5%). Output voltage changes due to changes in internal temperature must be taken into account separately.
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 5 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply the operating at specified junction temperatures, VIN = 33V., and
IO = 500mA
AMC7824
Parameter Symbol Test Co nd itions Min Typ Max Units
TJ = 25 °C 23 24 25
Output Voltage VO 0 °C ≤ TJ ≤ 125 °C, 5mA ≤ IO ≤ 1A,
27V ≤ VIN ≤ 38V 22.8 24 25.2 V
27V ≤ VIN ≤ 38V 18 480
Line Regul ation ∆VOI TJ = 25 °C 30V ≤ VIN ≤ 36V 6 240
mV
5mA ≤ IO ≤ 1A 12 480
Load Regulat ion ∆VOL TJ = 25 °C 250mA ≤ IO ≤ 750mA 4 240
mV
TJ = 25 °C 4.6 8
Quiescent Current IQ IO ≤ 1A 0 °C ≤ TJ ≤ 125 °C 8.5
mA
0 °C ≤ TJ ≤ 125 °C, 5mA ≤ IO ≤ 1A 0.5
Quiescent Current Change ∆IQ 0 °C ≤ TJ ≤ 125 °C, 27V ≤ VIN ≤ 38V, IO
≤ 1A 1.3
mA
Ripple Re jection 15V ≤ VIN ≤ 25V, f = 120Hz 50 66 dB
Output Resistance f = 1KHz, 0 °C ≤ TJ ≤ 125 °C 28 mΩ
Temperature Coefficient IO = 5mA, 0 °C ≤ TJ ≤ 125 °C -1.5 mV/ °C
Dropout Voltage IO = 1A, TJ = 25 °C 2.0 V
Short-Circuit Current TJ = 25 °C 150 mA
Peak Output Current TJ = 25 °C 2.1 A
Note : All characteristics are measured with capacitor across the input of 0.22µF, and a capacitor across the output of 0.1µF.
All Characteristi cs except noi se voltage and ri pple rejection ratio are measured using pulse techniques (tw ≤ 10 ms,
duty ≤ 5%). Output voltage changes due to changes in internal temperature must be taken into account separately.
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 6 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
APPLICATION INFORMATION
Fixed Output Regulator Adjustable Output Regulator
Current Regulator High Input Voltage Circuit
High Current Voltage Regulator High Input Voltage Circuit
AMC78XX
VIN VOUT
C1
0.22µ
µµ
µF C2
0.1µ
µµ
µF
VIN VOUT
C1
0.22µ
µµ
µF
R1
R2
AMC78XX
AMC78XX
VIN
VOUT
C1
0.22µ
µµ
µFIOUT
R1
AMC78XX
C1
0.22µ
µµ
µFC2
0.1µ
µµ
µF
AMC78XX
C1
0.22µ
µµ
µF C2
0.1µ
µµ
µF
R1
3Ω
ΩΩ
Ω
IOUT
VOUT
VIN
AMC78XX
VIN
R1
3Ω
ΩΩ
Ω
RSC
C1
0.22µ
µµ
µFC2
0.1µ
µµ
µF
VOUT
RSC = 0.8 / ISC
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 7 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
3-Pin Plastic TO-220
INCHES MILLIMETERS
MIN TYP MAX MIN TYP MAX
A 0.140 - 0.190 3.56 - 4.83
b1 0.045 - 0.070 1.14 - 1.78
b 0.020 - 0.045 0.51 - 1.14
c 0.012 - 0.045 0.30 - 1.14
D 0.560 - 0.650 14.22 - 16.51
E 0.380 - 0.420 9.65 - 10.67
e 0.090 - 0.110 2.29 - 2.79
e1 0.190 - 0.210 4.83 - 5.33
F 0.020 0.055 0.51 - 1.40
H1 0.230 - 0.270 5.84 - 6.86
J1 0.080 - 0.115 2.03 - 2.92
L 0.500 - 0.580 12.7 - 14.73
P 0.139 - 0.161 3.53 - 4.09
Q 0.100 - 0.135 2.54 - 3.43
L1 - - 0.250 - - 6.35
E
b
e1
P
e
b1
Q
D
L
cJ1
F
A
H1
SEATING PLAN
L1
3-Pin Surface Mount TO-263
INCHES MILLIMETERS
MIN TYP MAX MIN TYP MAX
A 0.160 - 0.190 4.06 - 4.83
b 0.020 - 0.039 0.51 - 0.99
b2 0.045 - 0.055 1.14 - 1.40
c 0.015 TYP. 0.38 TYP.
c2 0.045 - 0.055 1.14 - 1.40
D 0.340 - 0.380 8.64 - 9.65
E 0.380 - 0.405 9.65 - 10.29
e 0.100 BSC 2.54 BSC
L 0.575 - 0.625 14.61 - 15.88
L1 0.090 - 0.110 2.29 - 2.79
L2 - - 0.115 - - 2.92
L3 0.050 - 0.070 1.27 - 1.78
E
b
b2
e
L
L1
c
D
L3
c2
A
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 8 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
3-Pin Surface Mount TO-252
INCHES MILLIMETERS
MIN TYP MAX MIN TYP MAX
A 0.086 - 0.094 2.18 - 2.39
A1 0.040 - 0.050 1.02 - 1.27
b - 0.024 - - 0.61 -
b2 0.205 - 0.215 5.21 - 5.46
c 0.018 - 0.023 0.46 - 0.58
c1 0.018 - 0.023 0.46 - 0.58
D 0.210 - 0.220 5.33 - 5.59
E 0.250 - 0.265 6.35 - 6.73
e 0.090 BSC 2.29 BSC
e1 0.180 BSC 4.58 BSC
H 0.370 - 0.410 9.40 - 10.41
L 0.020 - - 0.51 - -
L1 0.025 - 0.040 0.64 - 1.02
L2 0.060 - 0.080 1.52 - 2.03
b2
E
L2
D
b
ee1
L1
SEATING PLAN
H
L
c
c1
A1
A
AMC78XX
VOLTAGE REGULATOR
Copyright 2001, ADD Mic rotech Cor p. 9 www.addmtek.c om
AMC Doc. # AMC78XX_ A
November 2001
IMPORTANT NOTICE
ADD Microtech (ADDM) reserves the right to make changes to its products or to discontinue any integrated circuit
product or service without notice, and advises its customers to ob tain the latest version of relevant information to verify,
before placing orders, that the information being relied on is current.
A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe
property or environmental damage. ADDM integrated circuit products are not designed, intended, authorized, or
warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of
ADDM products in such applications is understood to be fully at the risk of the customer. In order to minimize risks
associated with the customer’s applications, the customer should provide adequate design and operating safeguards.
ADDM assumes to no liability to customer product design or application support. ADDM warrants the performance of
its products to the specifications applicable at the time of sale.
U.S. Asia Pacific region
ADD Microtech Inc.
492 Altamont Drive
Milpitas, CA 95035
ADD Microtech Corp
3F, 132, Sec. 4, Chung Hsiao E. Rd.,
Taipei, Taiwan
TEL: (408) 9410420 TEL: 2-27760166
FAX: (408) 9410864 FAX: 2-27764208
