AIC2802 Datasheet, PDF (1/6 Pages) Analog Intergrations Corporation – 3A 23V Synchronous PWM Step-Down Converter

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: [phone]
FAX: [phone]
www.analog.com.tw
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