Microchip Technology HV861
The HV861 is a low-noise dimmable high-voltage dual EL lamp driver designed for driving two electroluminescent (EL) lamps with a combined area of 5 in2. The input supply voltage range is from 2.5V to 4.5V. The device is designed to minimize audible noise emitted by the EL lamps.| Part No. | HV861 |
|---|---|
| Datasheet | HV861 Download |
| Manufacturer |  Microchip Technology |
| Description | Low-Noise Dimmable Dual EL Lamp Driver |
| Buy | Stock & Price |
FEATURES
● Adjustable Output Regulation for Dimming● Lamp Fade-in/Fade-out Capability
● Low Audible Noise
● 180 VPP Output Voltage for Higher Brightness
● 1.5V Enable Input Logic High
● Single-cell Lithium Ion-compatible
● One Miniature Inductor to Power both Lamps
● Separately Adjustable Lamp and Converter Frequencies
● Split Supply Capability
APPLICATIONS
● Dual Display Cellular Phones● Keypad and LCD Backlighting
● Personal Digital Assistant (PDA)
● Handheld Wireless Communication Products
● Global Positioning Systems (GPS)
GENERAL DESCRIPTION
Enable input logic high can go as low as 1.5V, which allows logic interface operating from typical 1.8V supplies. The device uses a single inductor and a minimum number of passive components. With the internal reference voltage, the regulated output voltage is at a nominal value of 90V. The EL lamps therefore see ±90V. The two EL lamps can be turned on and turned off using two CMOS logic inputs, EN1 and EN2. The driver is disabled when both EN1 and EN2 are at logic low.
