AMC2576
www.addmtek.com
3A S
TEP
D
OWN
V
OLTAGE
R
EGULATOR
FEATURES
Guaranteed 3A output current
3.3V, 5V and adjustable output versions
Wide input voltage range, up to 40V
Internal oscillator of 52 KHz fixed
frequency
Wide adjustable version output voltage
range, from 1.23V to 37V ±4% max over
line and load conditions
Low standby current, typ. 70µA, at
shutdown mode
Requires only 4 external components
Thermal shut down and current limit
protection
P+ Product enhancement tested
PACKAGE PIN OUT
5. Enable
4. FB
3. GND
2. V
OUT
1. V
IN
DESCRIPTION
The AMC2576 series is a step-down switching regulator with
all the required active functions. It is capable of driving 3A load
with excellent line and load regulations. These devices are
available in fixed output voltages of 3.3V, 5V, and an adjustable
output version.
The AMC2576 series offers a high-efficiency replacement for
popular three-terminal linear regulators. It requires only a
minimum number of external components. Substantially, it reduces
not only the area of board size but also the size of the heat sink. In
some cases, no heat sink is required.
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,
featuring 70µA(typical) standby current. The output switch
includes cycle-by-cycle current limitation, as well as thermal
shutdown for full protection under fault conditions.
APPLICATIONS
LCD Monitors
ADD-ON Cards Switching Regulators
High Efficiency Step-Down Regulators
Efficient Pre-regulator for Linear
Regulators
VOLTAGE OPTIONS
AMC2576-3.3 – 3.3V Fixed
AMC2576-5.0 – 5.0V Fixed
AMC2576-ADJ – Adjustable Output
5. Enable
4. FB
3. GND
2. V
OUT
1. V
IN
5-Pin Plastic TO-220
(Top View)
5. Enable
4. FB
3. GND
2. V
OUT
1. V
IN
5-Pin Plastic TO-263
Surface Mount
(Top View)
5-Pin Plastic TO-220B
(Top View)
V
IN
1
V
OUT
2
FB
3
Enable
4
(Side View)
8
GND
7
GND
6
GND
5
GND
SO-8
(Top View)
ORDER INFORMATION
Plastic
TO-220
P
5-pin
AMC2576-ADJP
AMC2576-ADJPF
-40°C≤ T
J
≤
125°C
AMC2576-X.XP
AMC2576-X.XPF
Temperature
Range
Note:
Plastic
TO-220B
PB
5-pin
AMC2576-ADJPB
AMC2576-ADJPBF
AMC2576-X.XPB
AMC2576-X.XPBF
Plastic
DD
TO-263
5-pin
AMC2576-ADJDD
AMC2576-ADJDDF
AMC2576-X.XDD
AMC2576-X.XDDF
DM
Plastic SO
8pin
AMC2576-ADJDMF
AMC2576-X.XDMF
1.All surface-mount packages are available in Tape & Reel.
AMC2576-X.XDDT).
2.The letter “F” is marked for Lead Free process.
Append the letter “T” to part number (i.e.AMC2576-X.XDMFT,
Copyright
©
2006 ADDtek Corp.
1
DD007_E
--
DECEMBER 2006
ADDTEK [ ADDTEK CORP ]
