MIC4827 Series

180V EL Driver

Catalog

180V EL Driver

Part	Mounting Type	Type	Current - Supply	Frequency [Max]	Frequency [Min]	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case	Package / Case [custom]	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]
Microchip Technology MIC4827YMM	Surface Mount	EL Lamp Driver	21 µA	1 kHz	60 Hz	8-MSOP	1.8 V	5.5 V	8-MSOP 8-TSSOP	0.118 in	3 mm	85 °C	-40 °C
Microchip Technology MIC4827YMM-TR	Surface Mount	EL Lamp Driver	21 µA	1 kHz	60 Hz	8-MSOP	1.8 V	5.5 V	8-MSOP 8-TSSOP	0.118 in	3 mm	85 °C	-40 °C
Microchip Technology MIC4827BMM-TR	Surface Mount	EL Lamp Driver	21 µA	1 kHz	60 Hz	8-MSOP	1.8 V	5.5 V	8-MSOP 8-TSSOP	0.118 in	3 mm	85 °C	-40 °C
Microchip Technology MIC4827BMM	Surface Mount	EL Lamp Driver	21 µA	1 kHz	60 Hz	8-MSOP	1.8 V	5.5 V	8-MSOP 8-TSSOP	0.118 in	3 mm	85 °C	-40 °C

Catalog

180V EL Driver

Key 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

Description

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.