SOT-23 Boost PFC Control IC
IRS2505LPBF
µPFCTM
Features
• • • • • • • • • • • • • Critical-conduction mode PFC control High PF and ultra-low THD Wi...
Description
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
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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...
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