MIC2843AYMT TR Micrel Inc, MIC2843AYMT TR Datasheet
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MIC2843AYMT TR
Specifications of MIC2843AYMT TR
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MIC2843AYMT TR Summary of contents
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... LCD Display Backlight with Six WLEDs Ultra Fast PWM is a trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademark Amkor Technology Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( November 2010 MIC2843 High-Efficiency 6-Channel Linear WLED Driver with Ultra-Fast PWM™ ...
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... Micrel Inc. Ordering Information Part Number Mark Code MIC2843YMT YS3 Note: ® 1. Thin MLF ▲ = Pin 1 identifier. ® 2. Thin MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is halogen free. Pin Configuration Pin Description Pin Number Pin Name Pin Function ...
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... Micrel Inc. Absolute Maximum Ratings ) .................................. −0.3V to +6V Main Input Voltage ( ............................ −0.3V to +6V Enable Input Voltage (V END ) ..................... −0.3V to +6V Current Source Voltage (V D1-D6 Power Dissipation .....................................Internally Limited Lead Temperature (soldering, 10sec.)....................... 260°C Storage Temperature (T ) .........................−65°C to +150°C s (3) ESD Rating ...
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... Micrel Inc. Typical Characteristics November 2010 4 MIC2843 M9999-110810-B ...
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... Micrel Inc. Typical Characteristics (Continued) November 2010 5 MIC2843 M9999-110810-B ...
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... Micrel Inc. Functional Characteristics November 2010 6 MIC2843 M9999-110810-B ...
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... Micrel Inc. Functional Characteristics November 2010 7 MIC2843 M9999-110810-B ...
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... Micrel Inc. Functional Diagram November 2010 Figure 1. MIC2843 Functional Block Diagram 8 MIC2843 M9999-110810-B ...
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... Micrel Inc. Functional Description The MIC2843 is a six-channel WLED driver. The WLED driver is designed to maintain proper current regulation with LED current accuracy of 1.5% while the typical matching between the six channels room temperature. The WLEDs are driven independently from the input supply and will maintain regulation with a dropout of 40mV at 20mA ...
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... Micrel Inc. Application Information Ultra Fast PWM™ Dimming Interface The MIC2843 can receive PWM signals from the END pin for WLED dimming. Dimming is generated by pulsing the WLEDs on and off in synchronization with the PWM signal. The MIC2843 supports PWM frequencies from 200Hz to 500kHz. For PWM frequencies between 200Hz – ...
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... Micrel Inc. Figure 6. PWM Signal at 1% Duty Cycle (Iavg = 0.2mA) Figure 8. PWM Signal at 50% Duty Cycle (I Figure 10. PWM Signal at 100% Duty Cycle (I November 2010 Figure 7. PWM Signal at 20% Duty Cycle (Iavg = 4mA) = 10mA) Figure 9. PWM Signal at 80% Duty Cycle (I avg = 20mA) ...
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... Micrel Inc. High-Current Parallel Operation The linear drivers are independent of each other, and can be used individually or paralleled for larger current. A single WLED can be driven with all six linear drivers by connecting D1 through D6 together with the cathode of the WLED as shown in Figure 11. This will generate a ...
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... Micrel Inc. MIC2843 Typical Application Circuit Bill of Materials Item Part Number C1 C1608X5R0J105K R1 CRCW06032052FT1 U1 MIC2843YMT Notes: 1. TDK: www.tdk.com. 2. Vishay: www.vishay.com. 3. Micrel, Inc.: www.micrel.com. November 2010 Manufacturer Description (1) TDK 1µF Ceramic Capacitor, 6.3V, X5R, Size 0603 (2) Vishay 20.5kΩ, 1%, Size 0603 High-Efficiency Six-Channel Linear WLED Driver with (3) Micrel, Inc ...
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... Micrel Inc. PCB Layout Recommendations November 2010 Top Layer Bottom Layer 14 MIC2843 M9999-110810-B ...
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... Micrel Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’ ...