DN68 datasheet(1/2 Pages) ZETEX

No. de pieza	DN68

Descripción Electrónicos	ZXSC310 High power torch reference design

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Fabricante Electrónico	ZETEX [Zetex Semiconductors]

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Issue 2 - July 2006

1

www.zetex.com

DN68

ZXSC310 High power torch reference design

Description

This design note shows a typical ZXSC310 LED driver circuit for a high powered LED torch. The

input voltage ranges from 0.7V to 1.6V with a maximum output current of 335mA at 1.4V input.

A typical schematic diagram is shown in Figure 1.

Figure 1

Schematic diagram

Reference Value

Part number

Manufacturer Contact details

Comments

U1

ZXSC310E5

Zetex

www.zetex.com

LED driver in SOT23-5

Q1

FMMT617

Zetex

www.zetex.com

Low sat. NPN in SOT23

D1

2A

ZHCS2000

Zetex

www.zetex.com

2A Schottky in SOT23

L1

7.5 H

DO3316P-153x2 Coilcraft

www.coilcraft.com ISAT = 3A

R1

19.5m

Generic

NA

0805 size

C1

1 FGeneric

Generic

NA

C2

220 FGeneric

Generic

NA

C3

100 FGeneric

Generic

NA

Table 1

Bill of materials

Q1

L1

VIN

Vcc

Gnd

Isense

Vdrive

Stdn

U1

ZXSC310

D1

C2

R1

C3

C1

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