ZLED7520ZI1R ZMDI, ZLED7520ZI1R Datasheet - Page 4

• Manufacturer Part Number: ZLED7520ZI1R
• Description: LED Lighting Drivers LED driver
• Manufacturer: ZMDI

Specifications of ZLED7520ZI1R

• Rohs: yes
• Input Voltage: 6 V to 40 V
• Operating Frequency: 1 MHz
• Maximum Supply Current: 600 uA
• Output Current: 0.75 A
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: DFN-5
• Minimum Operating Temperature: - 40 C
• Power Dissipation: 500 mW

Contents
1
2
3
4
5
6
7
Data Sheet
August 12, 2011
1.1
1.2
1.3
1.4
2.1
2.2
2.3
2.4
2.5
2.6
2.7
3.1
3.2
3.3
3.4
5.1
5.2
ZLED7520
High Current 40V LED Driver with Internal Switch
2.7.1
2.7.2
3.2.1
3.2.2
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
IC Characteristics .......................................................................................................................................................... 6
Circuit Description ....................................................................................................................................................... 13
Application Circuit Design............................................................................................................................................ 15
ESD Protection ............................................................................................................................................................ 22
Pin Configuration and Package ................................................................................................................................... 23
Ordering Information ................................................................................................................................................... 27
Document Revision History ......................................................................................................................................... 27
Absolute Maximum Ratings ................................................................................................................................... 6
Operating Conditions ............................................................................................................................................. 6
Electrical Parameters ............................................................................................................................................. 7
Typical Operation Graphs ...................................................................................................................................... 8
ZLED7x20 Overview ............................................................................................................................................ 13
Control of Output Current via External Sense Resistor Rs .................................................................................. 13
Control of Output Current via an External DC Control Voltage on the ADJ Pin.................................................... 13
Control of Output Current via a PWM Signal on the ADJ Pin ............................................................................... 14
Control of Output Current via a Microcontroller Signal on the ADJ Pin ................................................................ 14
Shutdown Mode ................................................................................................................................................... 14
ZLED7x20 Protection Features ............................................................................................................................ 14
Applications .......................................................................................................................................................... 15
Thermal Considerations for Application Design ................................................................................................... 17
External Component Selection ............................................................................................................................. 17
Application Circuit Layout Requirements ............................................................................................................. 21
SOT89-5 Package Pin-out and Dimensions for the ZLED7020 ........................................................................... 23
DFN-5 Package Pin-out and Dimensions for the ZLED7320, ZLED7520 and ZLED7720 ................................... 25
Thermal Shut-down Protection ..................................................................................................................... 14
LED Open Load Protection ........................................................................................................................... 14
Temperature Effects of Load, Layout, and Component Selection ................................................................. 17
Temperature Effects of Low Supply Voltage V
Sense Resistor Rs ........................................................................................................................................ 17
Inductor L1 .................................................................................................................................................... 18
Bypass Capacitor C1 .................................................................................................................................... 19
De-bouncing Capacitor C2............................................................................................................................ 21
Capacitor C3 for Reducing Output Ripple ..................................................................................................... 21
Diode D1 ....................................................................................................................................................... 21
© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 1.2
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.
IN
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