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AMC2576 PDF даташит

Спецификация AMC2576 изготовлена ​​​​«ADD Microtech» и имеет функцию, называемую «3A STEP DOWN VOLTAGE REGULATOR».

Детали детали

Номер произв AMC2576
Описание 3A STEP DOWN VOLTAGE REGULATOR
Производители ADD Microtech
логотип ADD Microtech логотип 

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AMC2576 Даташит, Описание, Даташиты
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°CTJ 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









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AMC2576 Даташит, Описание, Даташиты
AMC DOC. #: AMC2576_D
March 2004
AMC2576
3A STEP-DOWN VOLTAGE REGULATOR
TYPICAL APPLICATION
7V – 40V
DC INPUT
AMC2576-X.X
1 VIN
CIN
100µF
GND
3
FB 4
VOUT
ENABLE
5
2
L1
100µH
OUTPUT
COUT
1000µF
Figure 1. Fixed Output Voltage Versions
7V – 40V
DC INPUT
AMC2576-ADJ
1 VIN
CIN
100µF
GND
3
FB 4
VOUT 2
ENABLE
5
L1
100µH
COUT
1000µF
OUTPUT
R2
R1
Figure 2. Adjustable Output Voltage Versions
(VOUT = VREF 1 +
)R2
R1
( )R2 = R1
VOUT
VREF
1
Where VREF = 1.23V, R1 between 1K and 5K
Copyright 2002,2003, 2004 ADD Microtech Corp.
2
www.addmtek.com









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AMC2576 Даташит, Описание, Даташиты
AMC DOC. #: AMC2576_D
March 2004
AMC2576
3A STEP-DOWN VOLTAGE REGULATOR
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Voltage, VIN
45V
ENABLE Pin Input Voltage
-0.3V V VIN
Operating Junction Temperature, TJ
Storage Temperature Range
150°C
-65°C to 150°C
Lead Temperature (soldiering, 10 seconds)
260°C
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.
Temperature Range
Input Voltage, VIN
RECOMMENDED OPERATING RATINGS
-40°C TJ 125°C
40V(Max.)
THERMAL DATA
P,PB, DD PACKAGE:
Thermal Resistance-Junction to Tab, θJT
Thermal Resistance-Junction to Ambient, θJA
Junction Temperature Calculation: TJ = TA+ (PD × θ JA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow.
3.0°C /W
45°C /W
1VIN
FB 4
R2*
BLOCK DIAGRAM
52KHz
Oscillator
Comparator
Thermal Shutdown
&
Current Limit
Regulator
With
Enable
5 ENABLE
GND 3
Error
R1* Amplifier
1.23V
Reference
Reset
Driver
2 VOUT
VOUT = 3.3V
VOUT = 5.0V
VOUT = Adjustable
: R2/R1 = 1.7
: R2/R1 = 3.1
: R2 = 0
R1 = Open
Copyright 2002,2003, 2004 ADD Microtech Corp.
3
www.addmtek.com










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