AMC7585 [ADDTEK]
5A LOW DROPOUT REGULATOR; 5A低压差稳压器
| 型号： | AMC7585 |
| 厂家： | 
ADDTEK CORP |
| 描述： | 5A LOW DROPOUT REGULATOR |
| 文件： | 总10页 (文件大小：137K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AMC7585
5A LOW DROPOUT REGULATOR
FEATURES
www.addmtek.com
DESCRIPTION
The AMC7585 is a high performance low dropout
regulator rated for 5A output current with fixed
2.5V/3.3V/5.0V and adjustable output. It is designed for use
in applications requiring low dropout characteristics over the
rated current range.
Output current is excess of 5A
Fast transient response
Reverse battery protection
Short circuit protection
Internal thermal overload protection
Available in 3L plastic TO-220 and surface
mount 3L TO-263/252 packages
Pin assignment identical to EZ1585B and
LT1585A series.
On chip trimming adjusts the reference voltage to 1%.
These features are ideal for low voltage microprocessor
applications requiring a regulated 2.5V to 3.6V power
supply.
In addition, the AMC7585 provides the device
protections including over current and thermal shutdown.
Also, reverse battery protection scheme limits the reverse
current when the input voltage falls below the output.
APPLICATIONS
PACKAGE PIN OUT
3.VIN
2.VOUT
1.ADJ/GND
3.VIN
2.VOUT
1.ADJ/GND
Pentium® Processor Supplies
PowerPCTM Supplies
Computer Add-On Cards
3-Pin Plastic TO-220
(Top View)
3-Pin Plastic TO-252
Surface Mount
Other Applications Requiring Low
Dropout Voltage Over Rated Current
(Top View)
VOLTAGE OPTIONS
3.VIN
3.VIN
2.VOUT
1.ADJ/GND
2.VOUT
1.ADJ/GND
AMC7585-2.5 – 2.5V Fixed
AMC7585-3.3 – 3.3V Fixed
AMC7585-5.0 – 5.0V Fixed
AMC7585-ADJ – Adjustable
3-Pin Plastic TO-263 (ST)
Surface Mount
3-Pin Plastic TO-263-3 (ST3)
Surface Mount
(Top View)
(Top View)
ORDER INFORMATION
TO-220
TO-263
3-pin
TO-263-3
TO-252
TA (OC)
T
ST
ST3
SJ
3-pin
3-pin
3-pin
AMC7585-X.XT
AMC7585-X.XTF(Lead Free) AMC7585-X.XSTF(Lead Free)
AMC7585-ADJT AMC7585-ADJST
AMC7585-X.XST
-
AMC7585-X.XSJ
0 to 70
0 to 70
0 to 70
0 to 70
-
AMC7585-X.XSJF(Lead Free)
AMC7585-ADJSJ
AMC7585-ADJST3
AMC7585-ADJTF(Lead Free) AMC7585-ADJSTF(Lead Free) AMC7585-ADJST3F(Lead Free) AMC7585-ADJSJF(Lead Free)
Note: 1. All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e., AMC7585-X.XSTT,
AMC7585-X.XST3T, AMC7585-X.XSJT ).
2. The letter ”F” is marked for Lead Free process.
Copyright © 2007 ADDtek Corp.
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DD041_G -- OCTOBER 2007
AMC7585
TYPICAL APPLICATION
AMC7585-X.X
VOUT
VIN ≥ 4V
2.5V/3.3V/5V
C1
C2
22µF
10µF
AMC7585-X.X Application Schematic
AMC7585
- ADJ
VIN
VOUT
R1
1%
ADJ
*C1
10µF
** C2
22µF
R2
1%
* REQUIRED IF REGULATOR IS LOCATED
FAR FROM POWER SUPPLY FILTER
** DESIGN C2 AS CLOSE TO VOUT PIN AS
POSSIBLE
VOUT = VREF (1+(R2/R1)) + IADJR2
AMC7585-ADJ Application Schematic
Copyright © 2007 ADDtek Corp.
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DD041_G -- OCTOBER 2007
AMC7585
ABSOLUTE MAXIMUM RATINGS (Note)
Input Voltage (VIN)
7V
Operating Junction temperature
Storage Temperature Range
150OC
-65OC to 150OC
300OC
Lead temperature (Soldering, 10 seconds)
Note: 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.
POWER DISSIPATION TABLE
Derating factor
θJT
(°C /W )
θJA
(°C /W )
TA ≤ 25°C
TA=70°C
TA= 85°C
Package
( mW/°C )
Power rating (mW) Power rating (mW) Power rating (mW)
TA ≥ 25OC
T
TF
6
6
6
6
7
7
45
45
45
45
80
80
22.2
22.2
22.2
22.2
12.5
12.5
2775
2775
2775
2775
1562
1562
1776
1776
1776
1776
1000
1000
1443
1443
1443
1443
812
ST/ST3
STF/ST3F
SJ
SJF
812
Note: TJ = TA + (PD × θJA)
PD: Power dissipation.
θJA: Thermal resistance from Junction to Ambient.
For T and ST/ST3 packages, θJT = 6.0°C / W.
For SJ package, θJT = 7.0°C /W.
TJ = TTAB + (PD × θJT)
TTAB: Tab temperature.
θJT: Thermal resistance from junction to tab of the package.
1. The θJA numbers are guidelines for the thermal performance of the device/PC-board system.
2. All of the above assume no ambient airflow.
3. If power consumption is over above rating, adequate heat sink is required to dissipate heat.
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Parameter
Symbol
Units
V
Min.
2.75
Typ.
Max.
7
Input Voltage
VIN
IO
Load Current (with adequate heatsinking)
Input Capacitor (VIN to GND)
0.010
5
A
1
10
0
µF
µF
OC
OC
Output Capacitor with ESR of 10Ω max., (VOUT to GND)
Operating Ambient Temperature Range
Operating junction temperature
70
TJ
125
Copyright © 2007 ADDtek Corp.
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DD041_G -- OCTOBER 2007
AMC7585
BLOCK DIAGRAM
VIN
VOUT
THERMAL
LIMIT
GND
1.25V
VREF
AMC7585-X.X Circuit Schematic
VIN
1.25V
VREF
THERMAL
LIMIT
VOUT
ADJ
AMC7585-ADJ Circuit Schematic
Copyright © 2007 ADDtek Corp.
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DD041_G -- OCTOBER 2007
AMC7585
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VIN = VOUT + 1.5V, IO = 10mA. These specifications apply operating ambient temperature
range, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used which maintains
junction and case temperatures equal to the ambient temperature.)
AMC7585
Parameter
AMC7585-2.5
Symbol
VOUT
Test Conditions
Units
V
Min.
Typ.
Max.
2.475 2.500 2.525
3.267 3.300 3.333
4.950 5.000 5.050
2.450 2.500 2.550
3.234 3.300 3.366
4.900 5.000 5.100
1.238 1.250 1.262
1.230 1.250 1.270
Output Voltage
IO = 10mA, TA = 25OC
AMC7585-3.3
AMC7585-5.0
AMC7585-2.5
AMC7585-3.3
AMC7585-5.0
V
IN = VOUT + 1.5V to 10V,
IO = 0mA to 5A
VOUT
V
V
Output Voltage
(Note 1)
Reference
Voltage
AMC7585-ADJ VREF
IO = 10mA to 5A, (Note 1)
(1.5V + VOUT) ≤ VIN ≤ 7V
IO=10mA to 5A
ΔVOI
ΔVOL
ΔV
Line Regulation (Note 2)
Load Regulation (Note 2)
Dropout Voltage
0.04
0.2
0.2
0.4
%
%
V
IO = 5A (Note 3)
1.30
1.50
Quiescent Current
( for AMC7585-X.X)
IQ
8
13
mA
VIN ≤ 7V, IO = 10mA to 3A
Adjust Pin Current
( for AMC7585-ADJ)
IADJ
50
120
µA
Current Limit
ICL
(VIN - VOUT)=2V
5.1
60
6.8
5
A
Minimum Load Current (Note 4)
Imin
10
mA
V
RIPPLE = 1VPP, IO = 100mA,
Ripple Rejection (Note 5)
RR
80
dB
fO=120Hz
Note 1
Output voltage is set to be 2.5V.
Note 2: Line and load regulations are guaranteed up to maximum power dissipation determined by input/output differential and the output current.
However, the maximum power will not be available over the full input/output voltage range.
Note 3: The specifications represent the minimum input/output voltage required to maintain 1% regulation.
Note 4: The minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor divider used to set
the output voltage is selected to meet the minimum load current requirement.
Note 5: These parameters, although guaranteed, are not tested in production prior to shipment
Copyright © 2007 ADDtek Corp.
5
DD041_G -- OCTOBER 2007
AMC7585
CHARACTERISTIC CURVES
CIN=10uF, COUT=22uF, TA=25OC, unless otherwise specified.
Load Regulation
Load Regulation
2.6
2.58
2.56
2.54
2.52
2.5
2
1.95
1.9
VIN =4.5V,VOUT =2.5V
VIN =3.8V, VOUT =1.8V
1.85
1.8
1.75
1.7
2.48
2.46
2.44
2.42
2.4
1.65
1.6
1.55
1.5
0
1
2
3
4
5
0
1
2
3
4
5
Output Current (A)
Output Current (A)
Load Regulation
Load Regulation
5.2
5.15
5.1
3.5
3.45
3.4
VIN =7.0V, VOUT =5.0V
VIN =5.3V, VOUT =3.3V
5.05
5
3.35
3.3
4.95
4.9
3.25
3.2
4.85
4.8
3.15
3.1
3.05
3
4.75
4.7
0
1
2
3
4
5
0
1
2
3
4
5
Output Current (A)
Output Current (A)
Quiescent Current vs.
Temperature
Output Voltage v.s.
Temperature
2.6
2.58
2.56
2.54
2.52
2.5
8
7
6
5
4
3
2
VIN =5V, VOUT=2.5V
IO=10mA
2.48
2.46
2.44
2.42
2.4
IO=5A
-40 -20
0
20 40 60 80 100 120
-40 -20
0
20
40
60
80 100 120
Temperature (OC)
Temperature (OC)
Copyright © 2007 ADDtek Corp.
6
DD041_G -- OCTOBER 2007
AMC7585
APPLICATION INFORMATION
The maximum power dissipation of a single-output regulator:
PD(MAX) = [(VIN(MAX) - VOUT(NOM))] × IOUT(NOM) + VIN(MAX) × IQ
VOUT(NOM) = the nominal output voltage
IOUT(NOM) = the nominal output current, and
IQ = the quiescent current the regulator consumes at IOUT(MAX)
VIN(MAX) = the maximum input voltage
Thermal consideration:
The AMC7585 series have internal power and thermal limiting circuitry designed to protect the device under
overload conditions. However maximum junction temperature ratings should not be exceeded under continuous normal
load conditions. The thermal protection circuit of AMC7585 series will prevent the device from damage due to
excessive power dissipation. When the device temperature rises to approximately 150°C, the regulator will be turned
off.
When power consumption is over about 1.2W (for TO-220/ TO-263 package, 687mW for TO-252 package, at
TA=70 °C), additional heat sink is required to control the junction temperature below 125°C.
The junction temperature is: TJ = PD (θJT + θTS + θSA ) + TA
P D : Dissipated power.
θJT : Thermal resistance from the junction to the mounting tab of the package.
(For TO-220, TO-263, and TO-263-3 packages, θJT=6°C /W. For TO-252 package, θJT=7°C /W)
θTS : Thermal resistance through the interface between the IC and the surface on which it is mounted.
(typically, θCS < 1.0 °C / W)
θSA : Thermal resistance from the mounting surface to ambient (thermal resistance of the heat sink).
If PC Board copper is going to be used as a heat sink, below table can be used to determine the appropriate size of
copper foil required. For multi-layered PCB, these layers can also be used as a heat sink. They can be connected with
several through hole vias.
59
500
45
1000
38
1500
33
2000
27
3000
24
4000
21
5000
PCB θSA (°C / W )
PCB heat sink size (mm2)
Recommended figure of PCB area used as a heat sink.
through hole vias
(Bottom View)
(Top View)
Copyright © 2007 ADDtek Corp.
7
DD041_G -- OCTOBER 2007
AMC7585
PACKAGE
3-Pin Plastic TO-220 (T)
INCHES
MILLIMETERS
E
A
P
F
MIN TYP MAX MIN TYP MAX
SEATING PLAN
Q
A
0.140
-
-
-
-
-
-
-
-
0.190 3.56
0.070 1.14
0.045 0.51
0.045 0.30
0.650 14.22
0.420 9.65
0.110 2.29
0.210 4.83
0.055 0.51
0.270 5.84
0.115 2.03
0.580 12.7
0.161 3.53
0.135 2.54
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4.83
1.78
1.14
1.14
16.51
10.67
2.79
5.33
1.40
6.86
2.92
14.73
4.09
3.43
6.35
H1
b1 0.045
b
c
0.020
0.012
0.560
0.380
0.090
D
D
E
e
L1
e1 0.190
0.020
F
L
H1 0.230
J1 0.080
-
-
-
-
-
-
L
P
0.500
0.139
0.100
-
b1
b
c
J1
e
e1
Q
L1
0.250
-
3-Pin Surface Mount TO-263 (ST)
INCHES
MILLIMETERS
MIN TYP MAX MIN TYP MAX
E
A
A
b
0.160
0.020
-
-
-
0.190 4.06
0.039 0.51
0.055 1.14
-
4.83
0.99
1.40
c2
-
b2 0.045
-
c
0.015 TYP.
0.38 TYP.
D
L
c2 0.045
-
-
-
0.055 1.14
0.380 8.64
0.405 9.65
-
1.40
9.65
D
0.340
0.380
-
L3
E
-
10.29
L1
c
e
0.100 BSC
2.54 BSC
L
0.575
-
-
-
-
0.625 14.61
0.110 2.29
0.115
0.070 1.27
-
-
-
-
15.88
2.79
2.92
1.78
b
e
L1 0.090
b2
L2
-
-
L3 0.050
Copyright © 2007 ADDtek Corp.
8
DD041_G -- OCTOBER 2007
AMC7585
3-Pin Surface Mount TO-263 (ST3)
INCHES
MILLIMETERS
MIN TYP MAX MIN TYP MAX
E
A
c2
A
b
0.160
0.020
-
-
-
0.190 4.06
0.039 0.51
0.055 1.14
-
4.83
0.99
1.40
-
b2 0.045
-
c
0.015 TYP.
0.38 TYP.
D
L
c2 0.045
-
-
-
0.055 1.14
0.380 8.64
0.405 9.65
-
1.40
9.65
D
0.340
0.380
-
E
-
10.29
e
0.100 BSC
2.54 BSC
L1
L
0.575
-
-
-
0.625 14.61
0.110 2.29
0.115
-
-
-
15.88
2.79
2.92
c
b
L1 0.090
e
b2
L2
-
-
3-Pin Surface Mount TO-252 (SJ)
INCHES
MILLIMETERS
MIN TYP MAX MIN TYP MAX
E
A
b2
A1
c1
A
0.086
-
0.094 2.18
0.050 1.02
-
2.39
1.27
-
A1 0.040
-
-
L2
b
-
0.024
-
-
0.61
SEATING PLAN
b2 0.205
0.018
c1 0.018
-
-
-
-
-
0.215 5.21
0.023 0.46
0.023 0.46
0.220 5.33
0.265 6.35
-
5.46
0.58
0.58
5.59
6.73
D
c
-
H
-
D
E
0.210
0.250
-
L1
L
-
b
e
0.090 BSC
0.180 BSC
2.29 BSC
c
e
e1
e1
H
L
4.58 BSC
0.370
0.020
-
-
-
-
0.410 9.40
0.51
-
-
-
-
10.41
-
-
L1 0.025
L2 0.060
0.040 0.64
0.080 1.52
1.02
2.03
Copyright © 2007 ADDtek Corp.
9
DD041_G -- OCTOBER 2007
AMC7585
IMPORTANT NOTICE
ADDtek 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 obtain 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. ADDtek 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
ADDtek 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.
ADDtek assumes to no liability to customer product design or application support. ADDtek warrants the performance of
its products to the specifications applicable at the time of sale.
ADDtek Corp.
9F, No. 20, Sec. 3, Bade Rd., Taipei, Taiwan, 105
TEL: 2-25700299
FAX: 2-25700196
Copyright © 2007 ADDtek Corp.
10
DD041_G -- OCTOBER 2007
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