|
|
PDF AIC2802 Data sheet ( Hoja de datos )
| Número de pieza | AIC2802 | |
| Descripción | 3A 23V Synchronous PWM Step-Down Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AIC2802 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
|
No Preview Available !
AIC2802
3A 23V Synchronous PWM Step-Down Converter
with Low Dropout Voltage Output
FEATURES
3A Continuous Output Current
internal Soft Start
Up to 90% Efficiency for Heavy Load
(Vin=12V, Vout=3.3V, Iout=3.0A)
Low Rds(on) Internal Switches: 150mΩ and
120mΩ
Stable with Low ESR Output Ceramic Capaci-
tors
Up to 93% Efficiency
<1µA Supply Current in Shutdown Mode
Fixed 340KHz Frequency
Thermal Shutdown
Cycle by Cycle Over Current Protection
Wide 4.5 to 23V Operating Input Range
Output Adjustable from 0.925V to 12V
Under Voltage Lockout
Output Voltage 2 is available from 0.8V~5V Ad-
justable Version.
Available in ± 2% Output Tolerance.
Extra Mosfet to control current of output voltage
2.
Internal OVP UVLO for Output1 and Output2
DESCRIPTION
The AIC2802 is a synchronous step-down regula-
tor with an integrated Power MOSFET and extra
Power MOSFET to control coutput voltage2. It
achieves 3A continuous output current over a wide
input supply range with excellent load and line
regulation.
Current mode operation provides fast transient re-
sponse and eases loop stabilization.
The Output Voltage1 adjusted by R1, R2 and Out-
put Voltage 2 adjusted by R3, R4.
Fault condition protection includes cycle-by-cycle
current limiting and thermal shutdown. Internal
soft-start reduces the stress on the input source
and the output overshoot at turn-on. In shutdown
mode, the regulator draws 1µA or less of supply
current.
The AIC2802 is available in SOP-8 with Ex-
posed Pad Package.
APPLICATIONS
Networking Systems
Distributed Power Systems
Pre-Regulator for Linear Regulators.
LCD TV, LCD Monitor, DPF.
Portable AV Equipment.
Note Book PC Applications.
PC Peripherals.
Set-top Box
Analog Integrations Corporation
Si-Soft Research Center
AIC2802-01 20121026
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC2802
PIN DESCRIPTIONS
SOP-8 Pin No.
1
2
3
4
5
6
7
8
9
Pin Name
BS
IN
SW
EN
FB
COMP
FB2
VCPU
GND
Pin Function
High Side Gate Drive Boost Input. BS supplies the drive for the high-side N-
Channel MOSFET switch. Connect a 10nF or greater capaitor from SW to BS
to power the high-side switch.
Power Input. IN supplies the power to the IC, as well as the step-down con-
verter switches. Drive IN with a 4.5 to 23V power source. By pass IN to GND
with a suitably large capacitor to eliminate noise on the input to the IC.
Power Switching Output. SW is the switching node that supplies power to the
output. Connect the output LC filter from switch to the output load. Note that a
capacitor is required from SW to BS to power the high-side switch.
Enable Input. EN is a digital input that turns the regulator on or off. Drive EN
high to turn on the regulator. Drive it low to turn it off. For automatic strat-up,
attach to IN with a 100k pull up resistor.
Feedback Input. FB senses the output voltage to regulate that voltage. Drive
feedback with a resistive voltage divider from the output voltage.
Compensation Node. COMP is used to compensate the regulation control loop.
Connect a series RC network form COMP to GND to compensate the regula-
tion control loop. In some cases, an additional capacitor from COMP to GND is
required.
Feedback Input2. FB2 senses the output voltage 2 to regulate that voltage.
Drive feedback with a resistive voltage divider from the output voltage.
To Driver the Mosfet for extra output voltage 2.
Ground. Connect the exposed pad on backside.
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet AIC2802.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AIC2802 | 3A 23V Synchronous PWM Step-Down Converter | Analog Intergrations Corporation |
| AIC2803 | 8-CHANNEL DARLINGTON DRIVERS | Analog Intergrations Corporation |
| AIC2803CN | 8-CHANNEL DARLINGTON DRIVERS | Analog Intergrations Corporation |
| 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 |