ZLED7000ZI1R ZMDI, ZLED7000ZI1R Datasheet

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Data Sheet Rev. 1.1 / August 2010 ZLED7000 40V LED Driver with Internal Switch ...

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ZLED7000 40V LED Driver with Internal Switch Brief Description The ZLED7000, one of our ZLED Family of LED control ICs inductive step-down converter that is optimal for driving a single LED or multiple LEDs (connected in series) from ...

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... Typ 2.900 3.100 0.900 1.100 Package SOT89-5 (Tape & Reel) Kit Printed Circuit Board (PCB) Printed Circuit Board (PCB) LED_Drivers@zmdi.com ZMD Far East, Ltd. 3F, No. 51, Sec. 2, Keelung Road 11052 Taipei Taiwan Phone +886.2.2377.8189 Fax +886.2.2377.8199 ...

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ZLED7000 40V LED Driver with Internal Switch Contents 1 IC Characteristics .......................................................................................................................................................... 6 1.1 Absolute Maximum Ratings ................................................................................................................................... 6 1.2 Operating Conditions ............................................................................................................................................. 6 1.3 Electrical Parameters............................................................................................................................................. 6 1.4 Characteristic Operating Curves............................................................................................................................ 8 2 Circuit Description ....................................................................................................................................................... 10 2.1 Voltage ...

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ZLED7000 40V LED Driver with Internal Switch List of Figures Figure 2.1 Directly Driving ADJ Input with a PWM Control Signal ................................................................................. 11 Figure 2.2 External DC Control Voltage at ADJ Pin....................................................................................................... 11 Figure 2.3 Driving ADJ Input from a ...

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ZLED7000 40V LED Driver with Internal Switch 1 IC Characteristics 1.1 Absolute Maximum Ratings Table 1.1 Absolute Maximum Ratings No. PARAMETER 1.1.1 Input voltage 1.1.2 I voltage SENSE 1.1.3 LX output voltage 1.1.4 Adjust pin input voltage 1.1.5 Switch output ...

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ZLED7000 40V LED Driver with Internal Switch No. PARAMETER DC voltage on ADJ pin to switch chip from active (ON) 1.3.8 state to quiescent (OFF) state DC voltage on ADJ pin to switch chip from quiescent 1.3.9 (OFF) state to ...

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ZLED7000 40V LED Driver with Internal Switch 1.4 Characteristic Operating Curves The curves are valid for the typical application circuit and T © 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.1 Data Sheet All rights reserved. The material contained herein ...

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ZLED7000 40V LED Driver with Internal Switch © 2010 Zentrum Mikroelektronik Dresden AG — Rev. 1.1 Data Sheet All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the August 12, 2010 ...

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ZLED7000 40V LED Driver with Internal Switch 2 Circuit Description The ZLED7000 is an inductive step-down converter for driving LEDs. It operates in continuous mode, enabling proper LED current control. The ZLED7000 supports linear or PWM control of the LED ...

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ZLED7000 40V LED Driver with Internal Switch 2.3.2 PWM Control The output current on LX can be set to a value below the nominal average value determined by resistor R using an external PWM signal as the control signal applied ...

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ZLED7000 40V LED Driver with Internal Switch 2.3.4 Microcontroller LED Control A microcontroller’s open-drain output can control current to the LED(s) by outputting a PWM control signal to the ADJ input of the ZLED7000. See Figure 2.1 for an example ...

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ZLED7000 40V LED Driver with Internal Switch 3 Application Circuit Design The following sections cover selection of the external components shown in the typical application illustrated on page 2. 3.1 External Component – Inductor L1 Select the inductor value for ...

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ZLED7000 40V LED Driver with Internal Switch The following calculation example yields an operating frequency of 122kHz and a duty cycle of 0.33: Input data: V =12V, L=220μ  220  T OFF   ...

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ZLED7000 40V LED Driver with Internal Switch 3.4 Output Ripple Shunt a capacitor C across the LED(s) as shown in LED the LED if necessary. Figure 3.1 Output Ripple Reduction Low ESR capacitors should be used because ...

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ZLED7000 40V LED Driver with Internal Switch 4 Operating Conditions 4.1 Thermal Conditions Refer to Table 1.1 for maximum package power dissipation specifications for the ZLED7000’s SOT89-5 package. Exceeding these specifications due to operating the chip at high ambient temperatures ...

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ZLED7000 40V LED Driver with Internal Switch 6 Pin Configuration and Package Figure 6.1 Pin Configuration and Package Drawing SOT89 Table 4.1 Pin Description SOT89-5 Pin Name No Power switch ...

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ZLED7000 40V LED Driver with Internal Switch 7 Layout Requirements 7.1 Layout Considerations for ADJ (Pin 3) For applications in which the ADJ pin is unconnected, minimize the length of circuit board traces connected to ADJ to reduce noise coupling ...

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... Zentrum Mikroelektronik Dresden AG, Japan Office 2nd Floor, Shinbashi Tokyu Bldg. 4-21-3, Shinbashi, Minato-ku Tokyo, 105-0004 Japan Phone +81.3.6895.7410 +1 (631) 549-2882 Fax +81.3.6895.7301 LED_Drivers@zmdi.com ZMD Far East, Ltd. 3F, No. 51, Sec. 2, Keelung Road 11052 Taipei Taiwan Phone +886.2.2377.8189 Fax +886.2.2377.8199 ...