Specification	HV850MG-G

Current - Supply	16 mA
Dimming	True
Frequency [Max]	500 Hz
Frequency [Min]	50 Hz
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-25 °C
Package / Case	8-MSOP, 8-TSSOP
Package / Case	3 mm
Package / Case [custom]	0.118 in
Supplier Device Package	8-MSOP
Type	EL Lamp Driver
Voltage - Supply [Max]	4.2 V
Voltage - Supply [Min]	3 V

HV850 Series

High Voltage, Low Noise, Inductorless EL Lamp Driver

Part	Current - Supply	Frequency [Min]	Frequency [Max]	Mounting Type	Type	Dimming	Package / Case	Package / Case [custom]	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]
Microchip Technology HV850MG-G	16 mA	50 Hz	500 Hz	Surface Mount	EL Lamp Driver		8-MSOP 8-TSSOP	0.118 in	3 mm	3 V	4.2 V	8-MSOP	-25 °C	85 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.70
	Digi-Reel®	1	$ 1.70
	Tape & Reel (TR)	2500	$ 1.31
Microchip Direct	T/R	1	$ 1.70
		25	$ 1.43
		100	$ 1.31
		1000	$ 1.26
		5000	$ 1.25

Description

General part information

HV850 Series

HV850 is a high voltage electroluminescent (EL) Lamp Driver IC. It is designed to drive EL lamps of up to 1.5in2, with capacitive values up to 5.0nF. The HV850 converts a low voltage DC input to a high voltage AC output across an EL lamp. It uses a charge pump scheme to boost the input voltage, eliminating the need for external inductors, diodes, and high voltage capacitors, components commonly found in conventional topologies.

The charge pump circuit discharges its energy into an EL lamp through a high voltage H-bridge. Once the voltage reaches its regulated limit, it is turned off to conserve power. The EL lamp is then discharged to ground and the H-bridge changes state to allow the charge pump to charge the EL lamp in the opposite direction.

The EL lamp frequency can be set either by an external resistor, REL, or by applying an external clock, where the clock frequency is divided by 128 to set the EL lamp frequency.