|
|
Número de pieza | D2576 | |
Descripción | 3A Step-Down Voltage Regulator | |
Fabricantes | Power Mos Microelectronic | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de D2576 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
No Preview Available ! D2576
DMS2576 Series 3A Step-Down Voltage Regulator
Description
The DMS2576 series of regulators are
mono-lithic 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.
The DMS2576 series offers a high-efficiency
re-placement for popular three-terminal linear
regulators. It substantially reduces the size of the
heat sink, and in some cases no heat sink is
required.
A standard series of inductors
optimized for use with the DMS2576 are available
from several different manufacturers. This feature
greatly simplifies the design of switch-mode
power supplies. Other 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 is included, featuring 80 µA
(typical) standby current. The output switch
includes cycle-by-cycle current limiting.
full protection under fault conditions.
Features
●3.3V, 5V, 12V, 15V, and adjustable output
versions
● Adjustable version output voltage range, 1.23V
to 37V ±4% max over line and load
conditions
● Guaranteed 3A output current
● Wide input voltage range, 40V
● Requires only 4 external components
● 52 kHz fixed frequency internal oscillator
● TTL shutdown capability, low power standby
mode
●High efficiency
● Uses readily available standard inductors
● Thermal shutdown and current limit protection
● P+ Product Enhancement tested
Applications
– Simple high-efficiency step-down (buck)
regulator
– Efficient pre-r egul ator for linear regulators
– On-card switching regulators
– Positive to negative converter (Buck-Boost)
REV:A3_W
2012-1-1
1 Power Mos Microelectronic Limited
www.dms-mic.com
1 page D2576
SYSTEM PARAMETERS(Note 3)
VOUT
Output Voltage VIN =25V, ILOAD =0.5A
VOUT
η
Output Voltage
Efficiency
18V≦VIN≦40V
0.5A≦ILOAD≦3A
VIN =18V, ILOAD =3A
Typ Limit(Note 2)
15 14.70
15.30
15 11.40/14.25
15.60/15.75
88
V
V(Min)
V(Max)
V
V(Min)
V(Max)
%
DMS2576-ADJ
Electrical
Characteristics
Specifications with standard type face are for T
0
= 25 C, and
J
those with boldface type apply over full Operating Temperature Range.
Symbol
Parameter
Conditions
SYSTEM PARAMETERS(Note 3)
VOUT
Output Voltage VIN =12V, ILOAD =0.5A
VOUT
η
Output Voltage
Efficiency
8V≦VIN≦40V
0.5A≦ILOAD≦3A
VIN =12V, ILOAD =3A
DMS2576-ADJ
Units(Limits)
Typ Limit(Note 2)
1.230
1.230
77
1.217
1.230
1.193/1.18
1.267/1.28
V
V(Min)
V(Max)
V
V(Min)
V(Max)
%
All Output Voltage Versions
Electrical Characteristics Specifications with standard type face are for TJ=25°C, and
those with boldface type apply over full Operating Temperature Range. Unless otherwise specified,
VIN= 12V for the 3.3V, 5V, and Adjustable version, VIN = 25V for the 12V version, and VIN = 30V for the
15V version. I =500 mA.
LOAD
Symbol
Parameter
DEVICE PARAMETERS
Ib Feedback Bias Current
fO Oscillator Frequency
Conditions
VOUT = 5V (Adjustable
Version Only)
(Note 11)
DMS2576-XX
Тур
Limit
(Note 2)
Units (Limits)
50 100/500
52
nA
kHz
REV:A3_W
2012-1-1
5 Power Mos Microelectronic Limited
www.dms-mic.com
5 Page |
Páginas | Total 10 Páginas | |
PDF Descargar | [ Datasheet D2576.PDF ] |
Número de pieza | Descripción | Fabricantes |
D2570 | D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module | Agere Systems |
D2570H17 | D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module | Agere Systems |
D2570H18 | D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module | Agere Systems |
D2570H19 | D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module | Agere Systems |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |