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PDF AIC2823 Data sheet ( Hoja de datos )
| Número de pieza | AIC2823 | |
| Descripción | 3A 23V Synchronous PWM Step-Down Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC2823
3A 23V Synchronous PWM Step-Down Converter
FEATURES
3A Continuous Output Current
Wide 4.75V to 23V Operating Input Range
Ouput Adjustable from 0.925V to 12V
(VREF=0.925V Version)
Ouput Adjustable from 0.8V to 12V
(VREF=0.8V Version)
Up to 95% Efficiency
Low Rds(on) Internal Switches: 100mΩ and
85mΩ
<3µA Supply Current in Shutdown Mode
340KHz/550KHz Frequency
Programmable Soft Start
Thermal Shutdown
Cycle by Cycle Over Current Protection
Under Voltage Lockout
Short Circuit Protection
Over Voltage Protection
DESCRIPTION
The AIC2823 is a monolithic synchronous step-
down converter. The device can provide 3A output
current from a 4.75V to 23V input supply.
The AIC2823’s current mode architecture and ex-
ternal compensation allow the transient response to
be optimized over a wide range of loads and capaci-
tors. Current mode control also provides cycle-by-
cycle current limit.
The AIC2823 provides over voltage protection and
thermal shutdown. An adjustable soft-start prevents
inrush current during turn on.
This device is available in a SOP-8 package, pro-
vides a very compact system solution with minimal
external components and PCB area.
APPLICATIONS
Networking Systems
Distributed Power Systems
Pre-Regulator for Linear Regulators
Set-top Box
TYPICAL APPLICATIONS CIRCUIT
Analog Integrations Corporation
AIC2823 Typical Application Circuit
Si-Soft Research Center
3A1, 1 Li-Hsin 1st Rd., Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
DS-2823G-05 20131025
www.analog.com.tw
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1 page  
AIC2823
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
VOUT AC
20mV/Div
VOUT AC
20mV/Div
VSW
5V/Div
VSW
5V/Div
IL
1A/Div
VIN=12V,VOUT=3.3V,IOUT=1A
Time(2μs/Div)
IL
2A/Div
VIN=12V,VOUT=3.3V,IOUT=3A
Time(2μs/Div)
Fig. 7 Stability Waveform at VOUT=3.3V, IOUT=1A
Fig. 8 Stability Waveform at VOUT=3.3V, IOUT=3A
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AIC2823.PDF ] | |
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