IRS29831 查看數據表（PDF） - International Rectifier

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产品描述 (功能)

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IRS29831

LED FLYBACK CONTROL IC

International Rectifier 

State Diagram

IRS29831PBF

Power Turned On

VZX < VOVTH-

VOVHYS

Delay tWD

Fault Mode

OUT = Low

COMP = Held Low

UVLO Mode

ICC = IQCCUV

HVREG = On

OUT = Low

COMP = Held Low

VZX > VOVTH

VCC > VCCUV+

Startup Mode

OUT = Switching

VCS < VCSTH

-VOVHYS

VCS > VCSTH

Current Limit

OUT = Low

VMULT > VPREF

VZX > VOVTH

Regulating Mode

HVREG = Off

OUT = Switching

VCS < VCSTH

-VOVHYS

VCS > VCSTH

8 www.irf.com © 2014 International Rectifier

September 10, 2014

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