MIC4827 Micrel Semiconductor, MIC4827 Datasheet
MIC4827
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MIC4827 Summary of contents
Page 1
... EL lamp circuit to be optimized for maximum efficiency and brightness. The MIC4827 uses a single inductor and a minimum number of external components, making it ideal for portable, space- sensitive applications. The MIC4827 is available in an 8-pin MSOP package with an ambient temperature range of – +85 C. Typical Application L1 220 H ...
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... Pin Description Pin Number Pin Name 1 VDD 2 RSW 3 REL 4 GND MIC4827 VDD RSW REL GND 8-Pin MSOP Package (MM) Pin Function Supply (Input): 1.8V to 5.5V for internal circuitry. Switch Resistor (External Component): Set switch frequency of the internal power MOSFET by connecting an external resistor to VDD ...
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... SW ) ......................... – + ....................................................... 206 C + Min Typ Max 3.8 7 170 180 190 166 194 0.5 V –0.5 DD 0.01 0.1 0 200 400 28 285 360 435 OUT 0.033 F/100V 10nF Micrel Units kHz % MIC4827 ...
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... INPUT VOLTAGE (V) Switching Frequency vs. Input Voltage 120 R = 332k 100 442k 562k INPUT VOLTAGE (V) MIC4827 Total Input Current vs. Temperature 562k 442k 3. Lamp = 2in R = 332k ...
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... 220 0.1 F OUT BAV20WS LAMP SIZE (sq. in.) 5 Micrel Total Input Current vs. Lamp Size 332k 3.32M 3. 220 0 OUT D = BAV20WS LAMP SIZE (sq. in.) MIC4827 ...
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... REL Functional Description Overview The MIC4827 is a high-voltage EL driver with an AC output voltage of 180V peak-to-peak capable of driving EL lamps 6in . Input supply current for the MIC4827 is typically 21 A with a typical shutdown current of 10nA. The high voltage EL driver has two internal oscillators to control the switching MOSFET and the H-bridge driver. Both of the internal oscil- lators’ ...
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... Lamp = 2in 562k Figure 4. 360Hz Output Waveform Enable Function The enable function of the MIC4827 is implemented by switching the R and R SW When R and R are connected to ground, the switch and SW EL the EL oscillators are disabled; therefore the EL driver be- comes disabled. When these resistors connect to V the oscillators will function and the EL driver is enabled ...
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... BAV20WS or BAS20W. Output Capacitor Low ESR capacitors should be used at the regulated boost output (CS pin) of the MIC4827 to minimize the switching output ripple voltage. Selection of the capacitor value will depend upon the peak inductor current, inductor size, and the load. MuRata offers the GRM42-6 series with up to 0.047 F at 100V, with a X7R temperature coefficient in 1206 surface- mount package ...
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... MIC4827 1 5 VDD RSW CS 3.32M 332k 3 8 REL GND VB EL LAMP X533- – 3.3V 18mA 180V 104Hz PP TIME (2ms/div) 2 Lamp with OUT 0.033 F/100V GRM42-6X7R333K100 LSI F Lamp Size EL 2 2in = 0.033 F S Micrel MIC4827 ...
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... MIC4827 V IN 3. F/6.3V Murata GRM42-6X5R106K6.3 Figure 7. Typical EL Driver for 2in MIC4827 L1 560k D1 Murata Diodes BAS20W LQ32CN561K21 MIC4827 1 5 VDD RSW CS 3.32M 562k 3 8 REL GND VB EL LAMP X533- – 3.3V 21mA 180V 102Hz PP TIME (2ms/div) 2 Lamp with 560 H inductor ...
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... LQH4C221K04 BAS20W C2 10 F/6.3V MIC4827 Murata GRM42-6X5R106K6 VDD RSW CS 562k 3 8 Murata REL 3.32M GND VB EL LAMP 3. 180V TIME (2ms/div Diodes C OUT 0.01 F/100V GRM42-2X7R104K100 –V F Lamp Size 104Hz 1.6in PP Micrel MIC4827 ...
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... MIC4827 V IN 1.8V to 3.3V (2X Alkaline Batteries F/6.3V Murata GRM42-6X5R106K6.3 Figure 9. Typical EL Driver for Remote Control Lamp MIC4827 L1 220 H D1 Murata Diodes LQ32CN561K21 BAS20W MIC4827 1 5 VDD RSW CS 1M 3.32M 3 8 REL GND VB EL LAMP Elite 12607 – ...
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... No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. September 2001 0.199 (5.05) DIMENSIONS: 0.187 (4.74) INCH (MM) 0.120 (3.05) 0.116 (2.95) 0.043 (1.09) 0.038 (0.97) 0.012 (0.30) R 0.008 (0.20) 5 MAX 0.004 (0.10) 0 MIN 0.039 (0.99) 0.035 (0.89) 0.021 (0.53) 8-Lead MSOP (MM (408) 944-0970 http://www.micrel.com FAX WEB © 2001 Micrel Incorporated 13 Micrel 0.007 (0.18) 0.005 (0.13) 0.012 (0.03) R MIC4827 ...