AIC2802

3A 23V Synchronous PWM Step-Down Converter

with Low Dropout Voltage Output

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



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: 150m

Ω and

120m

Ω



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



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

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.