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MIC4827

180V EL Driver

Status: In Production

Features:

  • 1.8V to 5.5V DC input voltage
  • 180VPP regulated AC output waveform
  • Independently adjustable EL lamp frequency
  • Independently adjustable boost converter frequency
  • 0.1µA shutdown current
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Overview
Documents
Development Environment
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RoHS Information
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Device Overview

Summary

MIC4827 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/NiMH battery applications. The MIC4827 converts a low voltage DC input to a 180VPP AC output signal that drives the EL lamp. The MIC4827 is comprised of two stages: a boost stage, and an H-bridge, lamp driver stage. The boost stage steps the input voltage up to +90V. The H-bridge stage then alternately switches the +90V output to each terminal of the EL lamp, thus creating a 180VPP AC signal to drive the EL lamp and generate light. The MIC4827 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 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 -40°C to +85°C.

Additional Features
    • 1.8V to 5.5V DC input voltage
    • 180VPP regulated AC output waveform
    • Independently adjustable EL lamp frequency
    • Independently adjustable boost converter frequency
    • 0.1µA shutdown current
Parametrics
Name
Value
Type
Single Lamp Driver
Input Voltage Low (V)
1.8
Input Voltage High (V)
5.5
Nominal Output Voltage (V)
±90
Max Switch Resistance(Ω)
7.0
Output Regulation
Yes
Max Lamp Size per Device (in2)
3.0
Package
8/MSOP
Product Type
Electroluminescent Drivers
Frequency (EL, Typical)
285Hz - 435Hz
Θja (C/W)
206
VOUT
180

Documents

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Data Sheets

11/09/2015
396KB

Development tools data is currently unavailable.

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC4827YMM
0.025100
0.124600
8
MSOP
3x3mm
NiPdAu
e4
MIC4827YMM-TR
0.025100
0.334700
8
MSOP
3x3mm
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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