ZLED7001

Universal LED Driver with Temperature Compensation

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.

13 of 15

4

Pin Configuration and Package

Figure 4.1

Pin Configuration ZLED7001

CS

GATE

GND

LD

PWMD

Table 4.1

Pin Description SOP-8

Pin Name NO.

Description

1

1.2V reference voltage. No bypass capacitor needed.

PWMD

2

PWM dimming input. The gate driver operates normally if PWMD is pulled high. The gate driver is

turned off if PWMD is pulled to GND or open.

LD

3

Linear dimming input. If the voltage at LD is < 240mV (typical), LD controls the current sense

threshold. Can also be used as temperature compensation threshold voltage.

GND

4

Internal circuit ground reference. Electrical connection to ground is required.

GATE

5

Output for external N-channel power MOSFET gate driver.

CS

6

output goes low if the voltage at CS > the voltage at the LD pin or the internal 240mV.

7

Sets the off-time of the power MOSFET. If left floating, off-time will be 510ns. For increased off-time, a

8

Supply input of 8V to 450V through a resistor, clamped at 7.1V internally. Low-ESR bypass capacitor

to GND is required.