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PDF AMC2576 Data sheet ( Hoja de datos )
| Número de pieza | AMC2576 | |
| Descripción | 3A STEP DOWN VOLTAGE REGULATOR | |
| Fabricantes | ADD Microtech | |
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AMC DOC. #:AMC2576_D
March 2004
A
DD MICROTECH CORP.
AMC2576
3A STEP DOWN VOLTAGE REGULATOR
DESCRIPTION
FEATURES
The AMC2576 series is a step-down switching regulator with all Guaranteed 3A output current
the required active functions. It is capable of driving 3A load with 3.3V, 5V and adjustable output versions
excellent line and load regulations. These devices are available in Wide input voltage range, up to 40V
fixed output voltages of 3.3V, 5V, and an adjustable output version. Internal oscillator of 52 KHz fixed frequency
The AMC2576 series offers a high-efficiency replacement for
Wide adjustable version output voltage range,
popular three-terminal linear regulators. It requires only a
from 1.23V to 37V ±4% max over line and
minimum number of external components. Substantially, it reduces
load conditions
not only the area of board size but also the size of the heat sink. In
some cases, no heat sink is required.
Low standby current, typ. 70µA, at shutdown
mode
The ± 4% tolerance on output voltage within specified input
voltages and output load conditions is guaranteed. The oscillator
frequency accuracy is within ±10%. External shutdown is included,
Requires only 4 external components
Thermal shut down and current limit protection
featuring 70µA(typical) standby current. The output switch
P+ Product enhancement tested
includes cycle-by-cycle current limitation, as well as thermal
shutdown for full protection under fault conditions.
APPLICATIONS
PACKAGE PIN OUT
LCD Monitors
ADD-ON Cards Switching Regulators
High Efficiency Step-Down Regulators
Efficient Pre-regulator for Linear
Regulators
z Voltage Options:
AMC2576-3.3 – 3.3V Fixed
AMC2576-5.0 – 5.0V Fixed
AMC2576-ADJ – Adjustable Output
5-Pin Plastic
TO-220B
5-Pin Plastic TO-220
(Top View)
5. Enable
4. FB
3. GND
2. VOUT
1. VIN
5. Enable
4. FB
3. GND
2. VOUT
1. VIN
(Side View)
5. Enable
4. FB
3. GND
2. VOUT
1. VIN
5-Pin Plastic TO-263
Surface Mount
(Top View)
ORDER INFORMATION
Temperature
Range
P
Plastic TO-220
5-pin
PB
Plastic TO-220B
5-pin
DD
Plastic TO-263
5-pin
AMC2576-ADJP
AMC2576-ADJPB
AMC2576-ADJDD
AMC2576-ADFPF
-40°C≤ TJ ≤ 125°C AMC2576-X.XP
AMC2576-ADJPBF
AMC2576-X.XPB
AMC2576-ADJDDF
AMC2576-X.XDD
AMC2576-X.XPF
AMC2576-X.XPBF AMC2576-X.XDDF
Note: All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e.
AMC2576-X.XDDT).
The letter “F” is marked for Lead Free process .
Copyright 2002, 2003, 2004 ADD Microtech Corp.
1
www.addmtek.com
1 page  
AMC DOC. #: AMC2576_D
March 2004
AMC2576
3A STEP-DOWN VOLTAGE REGULATOR
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
External components such as the catch diode, inductor, input and output capacitors can affect switching regulator
system performance. Refer to Application Information for details.
The oscillator frequency reduces to approximately 11kHz in the event of fault conditions, such as output short or
overload. And the regulated output voltage will drop approximately 40% from the nominal output voltage. This
self-protection feature lowers the average power dissipation by lowering the minimum duty cycle from 5% down
to approximately 2%.
For these parameters, FB is removed from VOUT and connected to +12V to force the output transistor OFF.
VOUT pin sourcing current. No diode, inductor or capacitor connect to VOUT.
FB is removed from VOUT and connected to 0V.
Copyright 2002,2003, 2004 ADD Microtech Corp.
5
www.addmtek.com
5 Page 
AMC DOC. #: AMC2576_D
March 2004
5-Pin Plastic TO-220 (P)
B
T
F
S
C
A
K
D
G
N
5-Pin Surface Mount TO-263 (DD)
R
J
AMC2576
3A STEP-DOWN VOLTAGE REGULATOR
INCHES
MILLIMETERS
MIN TYP MAX MIN TYP MAX
A 0.560 - 0.650 14.23 - 16.51
B 0.380 - 0.420 9.66 - 10.66
C 0.140 - 0.190 3.56 - 4.82
D 0.018 - 0.035 0.46 - 0.89
F 0.140 - 0.160 3.56 - 4.06
G 0.134 -
- 3.40 -
-
J 0.012 - 0.045 0.31 - 1.14
K 0.500 - 0.580 12.70 - 14.73
N 0.268 TYP
6.80 TYP
R 0.080 - 0.115 2.04 - 2.92
S 0.045 - 0.055 1.14 - 1.39
T 0.230 - 0.270 5.85 - 6.85
A
I
C
D
INCHES
MILLIMETERS
MIN TYP MAX MIN TYP MAX
A 0.395 - 0.420 10.03 - 10.67
B 0.325 - 0.361 8.25 - 9.17
C 0.171 - 0.181 4.34 - 4.59
B
K
M
D 0.045 - 0.055 1.14 - 1.40
E 0.013 - 0.017 0.330 - 0.432
F 0.029 - 0.035 0.737 - 0.889
N
G 0.062 - 0.072 1.57 - 1.83
I-
- 0.065 -
- 1.65
L
K 0.575
0.635 14.60
16.13
L 0.090
0.110 2.29
2.79
F
G
EM
N
7°
3°
7°
3°
Copyright 2002,2003, 2004 ADD Microtech Corp.
11
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11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AMC2576.PDF ] | |
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