ZLED7000

40V LED Driver with Internal Switch

Data Sheet

August 12, 2010

© 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.1

All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the

prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.

7 of 19

No.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

1.3.8

DC voltage on ADJ pin to

switch chip from active (ON)

state to quiescent (OFF)

state

0.15

0.2

0.25

V

1.3.9

DC voltage on ADJ pin to

switch chip from quiescent

(OFF) state to active (ON)

state

0.2

0.25

0.3

V

1.3.10

Resistance between ADJ

500

kΩ

1.3.11

Continuous LX switch

current

0.65

0.75

A

1.3.12

LX switch leakage current

1

μA

1.3.13

LX Switch ON resistance

0.9

1.5

Ω

1.3.14

Brightness control range at

low frequency PWM signal

PWM frequency =100Hz

PWM amplitude=5V,

1 LED

1200:1

1.3.15

Brightness control range at

high frequency PWM signal

PWM frequency =10kHz

PWM amplitude=5V,

1 LED

13:1

1.3.16

Operating frequency

ADJ pin floating L=100μH

154

kHz

1.3.17

Minimum switch ON time

LX switch ON

200

ns

1.3.18

Minimum switch OFF time

LX switch OFF

200

ns

1.3.19

Recommended maximum

operating frequency

1

MHz

1.3.20

Recommended duty cycle

range of output switch at

0.2

0.8

1.3.21

Internal comparator

propagation delay

50

ns

1.3.22

Thermal shutdown

temperature

140

°C

1.3.23

Thermal shutdown

hysteresis

20

°C