ZXLD1350(2010) 데이터 시트보기 (PDF) - Diodes Incorporated.

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ZXLD1350
(Rev.:2010)

30V 350mA LED DRIVER with AEC-Q100

Diodes Incorporated. 

A Product Line of

Diodes Incorporated

Electrical Characteristics (Test conditions: VIN = 12V, Tamb = 25°C, unless otherwise specified.) (*)

ZXLD1350

Symbol

VSU

IINQoff

IINQon

VSENSE

VSENSEHYS

ISENSE

VREF

ΔVREF/ΔT

VADJ

VADJoff

VADJon

RADJ

ILXmean

RLX

ILX(leak)

DPWM(LF)

DPWM(HF)

fLX

tSS

TPD

Parameter

Internal regulator start-up threshold

Quiescent supply current with output off

Quiescent supply current with output switching

Mean current sense threshold voltage

(Defines LED current setting accuracy)

Sense threshold hysteresis

ISENSE pin input current

Internal reference voltage

Temperature coefficient of VREF

External control voltage range on ADJ pin for

DC brightness control (†)

DC voltage on ADJ pin to switch device from

active (on) state to quiescent (off) state

DC voltage on ADJ pin to switch device from

quiescent (off) state to active (on) state

Resistance between ADJ pin and VREF

Continuous LX switch current

LX switch ‘On’ resistance

LX switch leakage current

Duty cycle range of PWM signal applied to ADJ

pin during low frequency PWM dimming mode

Brightness control range

Duty cycle range of PWM signal applied to ADJ

pin during high frequency PWM dimming mode

Brightness control range

Operating frequency

(See graphs for more details)

Start up time

(See graphs for more details)

Internal comparator propagation delay

Condition

VIN rising

ADJ pin grounded

ADJ pin floating

f = 250kHz

Measured on ISENSE pin with

respect to VIN

VADJ = 1.25V

VSENSE = VIN -0.1

Measured on ADJ pin with

pin floating

VADJ falling

VADJ rising

PWM frequency <500Hz

PWM amplitude = VREF

Measured on ADJ pin

PWM frequency <10kHz

PWM amplitude = VREF

Measured on ADJ pin

ADJ pin floating

L = 100H (0.82V)

IOUT = 350ma @ VLED = 3.4V

Driving 1 LED

Time taken for output

current to reach 90% of final

value after voltage on ADJ

pin has risen above 0.3V.

Min.

95

1.21

0.3

0.15

0.2

135

0.01

0.16

Typ.

4.8

15

250

100

±15

1.25

1.25

50

0.2

0.25

1.5

100:1

5:1

250

500

50

Max. Unit

V

20 µA

500 µA

105 mV

%

10

µA

1.29 V

ppm/°C

2.5

V

0.25 V

0.3

V

250 kΩ

0.37 A

2

Ω

1

µA

1

1

kHz

µs

ns

Notes:

(*). Production testing of the device is performed at 25°C. Functional operation of the device and parameters specified over a -40°C

to +105°C Temperature range, are guaranteed by design, characterization and process control.

(†). 100% brightness corresponds to VADJ = VADJ(nom) = VREF. Driving the ADJ pin above VREF will increase the VSENSE threshold and

output current proportionally.

ZXLD1350

Document number: DS33468 Rev. 7 - 2

4 of 22

www.diodes.com

November 2010

© Diodes Incorporated

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