IRS2505LTRPBF 查看數據表（PDF） - International Rectifier

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IRS2505LTRPBF

SOT-23 Boost PFC Control IC

International Rectifier 

IRS2505LPBF

µPFCTM

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

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