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Copyright © 2006 ADDtek Corp. 1 DD007_E -- DECEMBER 2006
AMC2576
3A STEP DOWN VOLTAGE REGULATOR
DESCRIPTION FEATURES
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 ve rsi o n.
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 protectio n u nder fault condi t i ons.
Guaranteed 3A output current
3.3V, 5V and adj ust abl e ou t put 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
APPLICATIONS PACKAGE PIN OUT
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-Pin Plastic TO-220
(Top View)
5. Enable
3. GND
2. VOUT
1. VIN
4. FB
5-Pin Plastic TO-263
Surface Mount
(Top View)
5. Enable
2. VOUT
1. VIN
4. FB
3. GND
5-Pin Plastic TO-220B
(Top View) (Sid e V iew)
5. Enable
2. VOUT
1. VIN
4. FB
3. GND
SO-8
To
View
1
2
3
4
8
7
6
5
VOU
GND
GND
GND
GND
FB
VIN
Enable
ORDER INFORMATION
Plastic
TO-220 Plastic
TO-220B Plastic
TO-263 Plastic SO
Temperature
Range P 5-pin PB 5-pin DD 5-pin DM 8pin
AMC2576-ADJP AMC2576-ADJPB AMC2576-ADJDD AMC2576-ADJDMF
AMC2576-ADJPF AMC2576-ADJPBF AMC2576-ADJDDF AMC2576-X.XDMF
AMC2576-X.XP AMC2576-X.XPB AMC2576-X.XDD
-40°C≤ TJ ≤ 12 5°C
AMC2576-X.XPF AMC2576-X.XPBF AMC2576-X.XDDF
Note: 1.All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e.AMC2576-X.XDMFT,
AMC2576-X.XDDT).
2.The letter “F” is marked for Lead Free process.