Microchip HV861K7-G

Manufacturer No:

HV861K7-G

Manufacturer:

Microchip

Package:

16-WFQFN Exposed Pad

Description:

Inductor Based Dual Lamp EL Driver

Quantity:

Delivery:

Payment:

In Stock :Available

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HV861K7-G information

Microchip HV861K7-G technical specifications, attributes, parameters and parts with similar specifications to Microchip HV861K7-G.

Type
Parameter

Type
Dual Lamp Drivers

Input Voltage Low (V)
2.5

Input Voltage High (V)
4.5

Nominal Output Voltage (V)
±90

Max Switch Resistance (Ω)
7.0

Output Regulation
Yes

Max Lamp Size per Device (in2)
5.0

Package
QFN-16

Operating Iq (µA)
0

Frequency(EL, Typical)
100Hz - 500Hz

Oja (C/W)
60

VOUT
180

Download datasheets and manufacturer documentation for Microchip HV861K7-G.

User Guide:

8fe16df6a691889a0a27e07c41001e17.pdf

Data Sheets:

b6ae03f3faff05a482d47cd47b6a07ea.pdf

HV861 is a low noise, dimmable, high voltage, dual EL Lamp driver designed for driving two electroluminescent (EL) Lamps with a combined area of 5.0 square inches. The input supply voltage range is from 2.5V to 4.5V. Enable input logic high can go as low as 1.5V, which allows logic interface operating from typical 1.8V supplies.The device is designed to minimize audible noise emitted by the EL Lamps. The device uses a single inductor and a minimum number of passive components. Using the internal reference voltage, the regulated output voltage is at a nominal value of 90V. The EL Lamps will therefore see ±90V. The two EL Lamps can be turned ON and OFF using two CMOS logic inputs, EN1 and EN2. The driver is disabled when both EN1 and EN2 are at logic low. The HV861 has two internal oscillators, a switching MOSFET, and two high voltage EL Lamp driver H-bridges. Each driver has its own half bridge common output, COM1 and COM2, which significantly minimizes the DC offset seen by the EL Lamp. The frequency for the switching MOSFET is set by an external resistor connected between the RSW-Osc pin and the supply pin VDD. 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 and VDD pins or VIN for split supply applications. Depending upon the EL Lamp sizes, a 1.0nF to 10.0nF capacitor is connected between the CS and ground. As the switching MOSFET charges the external inductor and discharges it into the capacitor at CS, 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. EL Lamp dimming can be accomplished by applying a PWM logic signal to the PWM pin. The EL Lamp brightness will be inversely proportional to the PWM duty cycle. The HV861 can also slowly turn the EL Lamp ON/OFF giving a fade ON/OFF appearance.

Adjustable output regulation for dimming
Lamp fade-in/fade-out capability
Low audible noise
180VPP 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
16-Lead QFN package

User Guide

PURCHASE

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