NCL30161 datasheet(5/8 Pages) ONSEMI

Part #	NCL30161

Description	Constant-Current Buck Regulator for Driving High Power LEDs

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NCL30161

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5

Figure 2. Simplified Block Diagram

S

RQ

Q

Timer (toff)

&

Thermal

Shutdown

5 V Regulator

(6.3 V to 40 Vmax)

Peak Current

Comparator

Valley Current

Comparator

220 mV

180 mV

Gate Driver

GATE

CS

VIN

VCC

ROT

500 mV

Short Circuit Protection

Comparator

DIM / Enable

VCC

GND

Enable Pull−Up

Resistor

VCC

D1

NCL30161

VIN

VCC

CS

GATE

GND

ROT

LED

RSENSE

L1

CIN

ROT

CVCC

DIM/Enable

Figure 3. Typical Application Circuit To Drive Multiple LEDs (Buck)

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Manufacturer	Part #	Datasheet	Description
ON Semiconductor	NCV30161	252Kb / 10P	Constant-Current Buck Regulator for Driving High Power LEDs June, 2019 ??Rev. 1
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ON Semiconductor	NCL30160	222Kb / 10P	1.0A Constant-Current Buck Regulator for Driving High Power LEDs January, 2012 ??Rev. 1
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