IRS2505LPBF

IRS2505LPBF µPFCTM Features Critical-conduction mode PFC control High PF and ultra-low THD Wide load and line range Regulated and programmable DC bus voltage No secondary winding required MOSFET cycle-by-cycle over-current protection DC bus over-voltage protection Low EMI gate drive Ultra-low start-up current 20.8V internal zener clamp on VCC Excellent ESD and latch immunity RoHS compliant 5-pin SOT-23 package SOT-23 Boost PFC Control IC Description The IRS2505 is a control IC for boost-type PFC circuits operating in critical-conduction mode. The IC incorporates a free-running frequency oscillator with on- and off-time control of the boost power MOSFET without the need for a secondary winding. Also included in the design is over-voltage protection of the DC bus and cycle-by-cycle over-current protection of the power MOSFET. Micro-power start-up current and an internal 20.8V zener clamp at VCC are provided to simplify the external VCC supply circuitry. ESD and latch immune CMOS technology enables a rugged monolithic IC construction. Applications Off-line power supply Electronic ballast LED power supply http://www.DataSheet4U.com/ Package Options 5 Lead SOT23 Application Diagram Rect (+) CMP VBUS DC Bus (+) 1 COM 5 IRS2505 2 VCC VCC (+) VCC (-) PFC 3 4 Rect (-) DC Bus (-) Ordering Information Base Part Number IRS2505LPBF Package Type 5L-SOT-23 Standard Pack Form Tape and Reel Quantity 3000 Orderable Part Number IRS2505LTRPBF 1 w...