MIC2282 Micrel Semiconductor, MIC2282 Datasheet
MIC2282
Related parts for MIC2282
MIC2282 Summary of contents
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... General Description The MIC2282 is a boost LED driver optimized for single cell operation from alkaline, nickel-metal-hydride, or lithium ion batteries. The MIC2282 operates with an input voltage between 0.9V to 15V, driving a string of series LEDs up to 33V. The combination of a low feedback voltage of 220mV and an operating current of 120μA provides a high efficiency solution that prolongs battery life ...
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... VIN Supply (Input): Positive supply voltage input. www.DataSheet4U.com October 2009 Output Temperature Range Voltage ADJ –40° to +125° VIN GND 2 7 GND SNS Top View 8-Pin MSOP (MM) 2 Package Lead Finish 8-pin MSOP Pb-Free M9999-102309 MIC2282 ...
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... Output switch off 36V 3. < 200mV 100mA SNS SW , and the ambient temperature The maximum allowable power dissipation will result in excessive die MIC2282 (2) ) .............................. +0.9V to +15V IN ).... –40°C to +85°C A )................... –40°C to +125°C J )..................... 160°C/W JA Min Typ Max Units 0.9 15 120 ...
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... LED in Series Efficiency 90 50mA 85 80 10mA INPUT VOLTAGE (V) Quiescent Current vs. Temperature 200 175 150 125 100 75 50 TEMPERATURE (°C) Output Current Limit vs. Temperature 1.75 1.50 1.25 1.00 0.75 0.50 0. 5.5 6 TEMPERATURE (° MIC2282 100mA 10mA 1. M9999-102309 ...
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... V BATT 0.22V Reference Functional Description The MIC2282 boost LED driver has a gated oscillator architecture designed to operate from a single cell input voltage as low as 0.9V and provide a high-efficiency adjustable regulated output voltage. One advantage of this architecture is that the output switch is disabled whenever the output voltage is above the feedback ...
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... Finally, the output diode must be selected to have adequate reverse breakdown voltage and low forward voltage at the application current. Schottky diodes typically meet these requirements. Standard silicon diodes have forward voltages which are too large except in extremely low power applications. 6 MIC2282 a lower saturation threshold. Inexpensive aluminum 5 ...
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... OSC V = 3.0V OUT I =10mA OUT(max 1.0V IN(min) efficiency = 75% × 5V 5mA = = Average I 33.3mA IN(max) × 1. × 1.0V 0 × × 2 33.3mA 20kHz × (max) × × 438 µH × × kHz L = 438µH MIC2282 M9999-102309 ...
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... Capacitor,100μF ,20V , TANT AVX Capacitor ,47μF ,25V , TANT Fairchild 500mA, 30V Schottky Rectifier OPTEK Technology,Inc 100mA, White LED Coil Tronics Inductor, 200μH, 2.43A Vishay Dale Resistor,2.2 Ohms , 0603 , 1% , 1/16W (6) Micrel, Inc. Single-Cell Boost LED Driver 8 MIC2282 Qty M9999-102309 ...
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... Micrel, Inc. PCB Layout www.DataSheet4U.com October 2009 TOP LAYER BOTTOM LAYER 9 MIC2282 M9999-102309 ...
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... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully October 2009 8-Pin MSOP (MM) indemnify Micrel for any damages resulting from such use or sale. © 2009 Micrel, Incorporated. 10 MIC2282 M9999-102309 ...