Microchip HV823LG-G

Manufacturer No:

HV823LG-G

Manufacturer:

Microchip

Package:

8-SOIC (0.154, 3.90mm Width)

Description:

Inductor Based Single Lamp EL Driver

Quantity:

Delivery:

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In Stock :Available

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HV823LG-G information

Microchip HV823LG-G technical specifications, attributes, parameters and parts with similar specifications to Microchip HV823LG-G.

Type
Parameter

Type
Single Lamp Driver

Input Voltage Low (V)
2.0

Input Voltage High (V)
9.5

Nominal Output Voltage (V)
±90

Max Switch Resistance (Ω)
6.0

Output Regulation
Yes

Max Lamp Size per Device (in2)
23

Package
SOIC-8

Operating Iq (µA)
0

Frequency(EL, Typical)
330Hz - 440Hz

Oja (C/W)
101

VOUT
180

Download datasheets and manufacturer documentation for Microchip HV823LG-G.

HV823 is a high-voltage driver designed for driving EL lamps of up to 50nF. EL lamps greater than 50nF can be driven for applications not requiring high brightness. The input supply voltage range is from 2.0V to 9.5V. The device uses a single inductor and a minimum number of passive components. The nominal regulated output voltage that is applied to the EL lamp is ±90V. The chip can be enabled by connecting the resistors on the RSW-Osc pin and the REL-Osc pin to the VDD pin, and disabled when connected to GND. The HV823 has two internal oscillators, a switching MOSFET and a high-voltage EL lamp driver. The frequency of the switching converter MOSFET is set by an external resistor connected between the RSW-Osc pin and the VDD supply pin. The EL lamp driver frequency is set by an external resistor connected between the REL-Osc pin and the VDD pin. An external inductor is connected between the LX pin and the VDD pin. A 0.01µF to 0.1µF capacitor is connected between the CS pin and the GND. The EL lamp is connected between the VA and VB pins. The switching MOSFET charges the external inductor and discharges it into the CS capacitor. The voltage at CS will start to increase. Once the voltage at CS reaches a nominal value of 90V, the switching MOSFET is turned OFF to conserve power. The output pins VA and VB are configured as an H-bridge and are switched in opposite states to achieve 180V peak-to-peak across the EL lamp.

Processed with HVCMOS® technology
2.0 to 9.5V operating supply voltage
DC to AC conversion
180V peak-to-peak typical output voltage
Large output load capability typically 50nF
Permits the use of high-resistance elastomeric lamp components
Adjustable output lamp frequency to control lamp color, lamp life, and power consumption
Adjustable converter frequency to eliminate harmonics and optimize power consumption
Enable/disable function
Low current draw under no load condition

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