AIC2823 Datasheet, PDF (1/10 Pages) Analog Intergrations Corporation – 3A 23V Synchronous PWM Step-Down Converter

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
(V_REF=0.925V Version)
 Ouput Adjustable from 0.8V to 12V
(V_REF=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 1^st Rd., Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: [phone]
FAX: [phone]
DS-2823G-05 20131025
www.analog.com.tw
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