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NCL30002

Power Factor Corrected Buck LED Driver

ON Semiconductor 

OVP

+

+−

VOVP

− UVP

++

VUVP

MFP

RMFP

E/A −

+

gm

+

VREF

(Enable EA)

NCL30002

COMP

VControl

VDD

270 mA*

Ct

Fault

VEAH

Clamp

Add Ct

Offset

PWM

−

+

VCC

VCC

Management

Power Good

mVDD VDD

CS

ZCD

LEB

195 ns*

+

OCP

+

−

VILIM

+

−

+

VZCD(ARM)

DRV

Demag

SQ

RQ

+

ZCD

Clamp

+

−

VZCD(TRIG)

Reset

180 ms*

Off Timer

SQ

RQ

SQ

RQ

SQ

RQ

* Typical Values Shown

All SR Latches are Reset Dominant

Figure 1. Block Diagram

VCC

DRV

mVDD

GND

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