ZXLD1366 Просмотр технического описания (PDF) - Diodes Incorporated.

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Компоненты Описание

производитель

ZXLD1366

HIGH ACCURACY 1A, 60V LED DRIVER WITH INTERNAL SWITCH

Diodes Incorporated. 

Block Diagram

VIN

A Product Line of

Diodes Incorporated

ZXLD1366

D1

RS

L1

5 VIN

4 ISENSE

1 LX

C1

4.7mF

5V

R1

Voltage

regulator

0.2V

-

+

Adj

3

R4

R5

50K 20K

600KHz

R2

D1

1.25V

Gnd

2

-

+ R3

1.35V

-

+

Low voltage

detector

MN

-

+

Figure 1 Pin connection for TSOT23-5 package

Pin Description

Name TSOT23-5 DFN3030-6

LX

1

1

GND

2

2, 5

ADJ

3

3

ISENSE

4

4

VIN

5

6

SO8-EP

1

2, 3, 6, 7

4

5

8

Description

Drain of NDMOS switch

Ground (0V)

Multi-function On/Off and brightness control pin:

• Leave floating for normal operation.(VADJ = VREF = 1.25V giving

nominal average output current IOUTnom = 0.2V/RS)

• Drive to voltage below 0.2V to turn off output current

• Drive with DC voltage (0.3V < VADJ < 2.5V) to adjust output current

from 25% to 200% of IOUTnom

• Connect a capacitor from this pin to ground to set soft-start time.

Soft start time increases approximately 0.2ms/nF

Connect resistor RS from this pin to VIN to define nominal average output

current IOUTnom = 0.2V/RS

(Note: RSMIN = 0.2V with ADJ pin open-circuit)

Input voltage (6V to 60V). Decouple to ground with 4.7µF of higher X7R

ceramic capacitor close to device

ZXLD1366

Document number: DS31992 Rev. 5 - 2

2 of 32

www.diodes.com

June 2010

© Diodes Incorporated

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