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MIC4826YMM Datasheet(PDF) 1 Page - Microchip Technology |
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MIC4826YMM Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 22 page  2019 -2022 Microchip Technology Inc. DS20006134B-page 1 MIC4826 Features • 1.8V to 5.5V DC Input Voltage • 160 VPP Regulated AC Output Waveform • Independently Adjustable EL Lamp Frequency • Independently Adjustable Boost Converter Frequency • 0.1 µA Shutdown Current Applications • LCD Panel Backlight • Cellular Phones • PDAs • Pagers • Calculators • Remote Controls • Portable Phones General Description The MIC4826 is a high output voltage, DC to AC converter, designed for driving Electroluminescent (EL) lamps. The device operates from an input voltage range of 1.8V to 5.5V, making it suitable for 1-cell Li Ion and 2- or 3-cell alkaline, NiCad, and NiMH battery applications. The MIC4826 converts a low voltage DC input to a 160 VPP AC output signal that drives the EL lamp. The MIC4826 has two stages: a boost stage, and an H-bridge lamp driver stage. The boost stage steps the input voltage up to +80V. The H-bridge stage then alternately switches the +80V output to each terminal of the EL lamp, thus creating a 160 VPP AC signal to drive the EL lamp and generate light. The MIC4826 features separate oscillators for the boost and H-bridge stages. External resistors independently set the operating frequency of each stage. This flexibility allows the EL lamp circuit to be optimized for maximum efficiency and brightness. The MIC4826 uses a single inductor and a minimum number of external components, making it ideal for portable, space-sensitive applications. The MIC4826 is available in an 8-lead MSOP package with an ambient temperature range of –40°C to +85°C. Package Type MIC4826 8-Pin MSOP (MM) 1 VDD RSW REL GND 8VA VB CS SW 7 6 5 2 3 4 Low Input Voltage, 160 VPP Output Voltage, EL Driver |
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