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AIC2858F

Analog Intergrations Corporation
Part Number AIC2858F
Manufacturer Analog Intergrations Corporation
Description Step-Down Converter
Published Oct 5, 2016
Detailed Description AIC2858F 3A 23V Synchronous Step-Down Converter  FEATURES  3A Continuous Output Current  Programmable Soft Start  1...
Datasheet PDF File AIC2858F PDF File

AIC2858F
AIC2858F

Overview
AIC2858F 3A 23V Synchronous Step-Down Converter  FEATURES  3A Continuous Output Current  Programmable Soft Start  100mΩ Internal Power MOSFET Switches  Stable with Low ESR Output Ceramic Capaci- tors  Up to 95% Efficiency  <1µA Supply Current in Shutdown Mode  Fixed 340KHz Frequency  Thermal Shutdown  Cycle by Cycle Over Current Protection  Wide 4.
75 to 23V Operating Input Range  Output Adjustable from 0.
925V to 12V  Under Voltage Lockout  APPLICATIONS  Networking Systems such as Modems & Routers  Distributed Power Systems  Pre-Regulator for Linear Regulators.
 Set-top Box  DESCRIPTION The AIC2858F is a synchronous step-down regulator with an integrated Power MOSFET.
It achieves 3A continuous output current over a wide input supply range with excellent load and line regulation.
Current mode operation provides fast transient response and eases loop stabilization.
Fault condition protection includes cycle-bycycle current limiting and thermal shutdown.
Adjustable soft-start reduces the stress on the input source and the output overshoot at turnon.
In shutdown mode, the regulator draws 1µA or less of supply current.
The AIC2858F is available in a SOP-8 with Exposed Pad Package.
 TYPICAL APPLICATIONS CIRCUIT 12V C1 10uF U1 2 IN ON OFF 7 EN 6 COMP C2 10uF Cc 3.
3nF Rc 10k 4 GND AIC2858F C6 BS 1 SW 3 10nF FB 5 SS 8 C5 10nF L1 15uH 5V C3 22uF C4 22uF R1 44.
2k R2 10k Analog Integrations Corporation Typical Application Circuit Si-Soft Research Center 3A1, No.
1, Li-Hsin Rd.
I, Science Park, Hsinchu 300, Taiwan, R.
O.
C.
TEL: 886-3-5772500 FAX: 886-3-5772510 DS-2858FG-01 20120103 www.
analog.
com.
tw 1 AIC2858F  PIN CONFIGURATION A IC2 858FX XX X X PACKING T YPE TR: TAPE & REEL TB: TUBE PACKAGING TYPE R8: SOP-8 Exposed Pad (Heat Sin k ) G: GREEN PACKAGE PIN CONFIGURATION SOP-8 Exposed Pad (Heat Sink ) TOP VIEW BS 1 IN 2 SW 3 GND 4 8 SS 7 EN 6 COMP 5 FB Note: The exposed pad must be connected wit h GND pin.
Ex am ple : AIC2 858 FG...


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