GENERAL DESCRIPTION
Current mode control provides fast transient response and cycle-by-Cycle current limit. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 1μA. FEATURES
2A Output Current Wide 4.75V to 23V Operating Input Range Integrated 130mΩ Power MOSFET Switches Output adjust from VFB to 20V Up to 93% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors VÛmw`R●yÑb€ Fixed 350KHz Frequency Cycle-by-Cycle Over Current Protection Thermal shutdown and short circuit protections w.goftechm BLOCK DIAGRAM CURRENT SENSE AMPLIFIER OSCILLATOR FB 5 90/350KHz 1 BS RAMP CLK 2 IN + 5V + SS 8 0.925V S R Q Q M1 0.13Ω + + ERROR AMPLIFIER 6μA - CURRENT COMPARATOR M2 0.13Ω 3 SW 4 GND COMP 6 EN IN EN 7 7V Zener + 1.5V INTERNAL REGULATORS SHUTDOWN COMPARATOR 5V - 1/9 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.1.2 Sep.05, 2011 AX3482 PIN ASSIGNMENT The package of AX...
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