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PDF AE2576 Data sheet ( Hoja de datos )
| Número de pieza | AE2576 | |
| Descripción | SIMPLE SWITCHER 3A Step-Down Voltage Regulator | |
| Fabricantes | Chip-Rail | |
| Logotipo |  |
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AE2576
SIMPLE SWITCHER 3A Step-Down Voltage Regulator
Features
3.3V, 5V, 12V, 15V and adjustable
output versions
Adjustable version output voltage
range, 1.23V to 30V ±4% max over
line and load conditions
Guaranteed 3A output current
Input voltage up to 45V
Requires only 4 external components
Applications
Simple high-efficiency step-down
(buck) regulator
Efficient pre-regulator for linear
General Description
The AE2576 series of regulators are
monolithic integrated circuits that provide
all the active functions for a step-down
(buck) switching regulator, capable of
driving 3A load with excellent line and load
regulation. These devices are available in
fixed output voltages of 3.3V, 5V, 12V,
15V, and an adjustable output version.
Requiring a minimum number of external
components, these regulators are simple
to use and include internal frequency
compensation and a fixed frequency
oscillator.
A standard series of inductors optimized
52KHz fixed frequency internal
oscillator
TTL shutdown capability, low power
standby mode
High efficiency
Thermal shutdown and current limit
protection
regulators
Positive to negative converter
(BucK-Boost)
for use with the AE2576 are available from
several different manufacturers. This
feature greatly simplifies the design of
switch-mode power supplies.
Others features include a guaranteed ±4%
tolerance on output voltage within
specified input voltages and output load
conditions, and ±10% on the oscillator
frequency. External shutdown in included,
featuring 50µA (typical) standby current.
The output switch includes cycle-by-cycle
current limiting, as well as thermal
shutdown for full protection under fault
conditions.
Jan.2010 V1.2
1/11
Free Datasheet http://www.datasheet4u.com/
1 page  
AE2576
SIMPLE SWITCHER 3A Step-Down Voltage Regulator
VIN=12V，
η Efficiency ILOAD=3A
VOUT=5V
-- 77 -- %
ALL Output Voltage Versions Electrical Characteristics
（Condition :TJ = 25℃,otherwise specified, VIN =12V for the 3.3V, 5V,and Adjustable
version, VIN =25V for the 12V version, and VIN =25V for the 12V version, and VIN =30V for
15V version. ILOAD=500mA）
Symbol Parameter
Conditions
AE2576—XX
Min Typ Max
(Note 2)
(Note2)
Units
DEVICE PARAMETERS
Ib
fO
VSAT
DC
ICL
IL
IQ
ISTBY
θJA
θJA
θJC
θJA
VIH
Feedback Bias
Current
Oscillator
Frequency
VSAT Saturation
Voltage
Max Duty
Cycle (ON)
Current Limit
Output Leakage
Current
Quiescent
Current
Standby
Quiescent
Current
Thermal
Resistance
CONTROL
Pin
Logic Input Level
Adjustable Version
Only, VOUT=5V
(Note 11)
IOUT=3A(Note 4)
(Note 5)
(Notes 4,11)
Output = 0V
(Notes 6, 7)
Output =-1V
(Notes 10)
(Note 6)
PIN = 5V
(OFF)
T Package, Junction
to Ambient (Note 8)
T Package, Junction
to Ambient (Note 9)
T Package, Junction
to Case
S Package, Junction
to Ambient (Note 10)
VOUT=0V
--
47
--
93
5.5
--
--
--
--
--
--
--
--
1.38
Jan.2010 V1.2
50
52
1.5
98
6.12
7.5
6
200
65
45
2
50
1.50
100 nA
58 KHz
2.0
V
-- %
6.7 A
2..0 mA
30 mA
12
mA
300 μA
-- ℃/W
-- ℃/W
-- ℃/W
-- ℃/W
V
--
5/11
Free Datasheet http://www.datasheet4u.com/
5 Page 
AE2576
SIMPLE SWITCHER 3A Step-Down Voltage Regulator
Physical Dimensions (Continued)
5-Lead To-263 Surface Mount Package
Jan.2010 V1.2
11/11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AE2576.PDF ] | |
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