IRS2505LPBF Datasheet, PDF (1/11 Pages) International Rectifier – SOT-23 Boost PFC Control IC

IRS2505LPBF
µPFC^TM
SOT-23 Boost PFC Control IC
Features
Description
• 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
Applications
• Off-line power supply
• Electronic ballast
• LED power supply
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.
Package Options
Application Diagram
Rect (+)
VCC (+)
VCC (-)
CMP
1
COM
2
VCC
3
VBUS
5
PFC
4
5 Lead SOT23
DC Bus (+)
Rect (-)
Ordering Information
Base Part Number
IRS2505LPBF
Package Type
5L-SOT-23
DC Bus (-)
Standard Pack
Form
Quantity
Tape and Reel
3000
Orderable Part Number
IRS2505LTRPBF
1 www.irf.com © 2013 International Rectifier
July 22, 2013