HV857MG-G
EL Lamp Driver 5V 8-Pin MSOP T/R
Quantity | Unit Price(USD) | Ext. Price |
---|---|---|
1 | $0.802 | $0.80 |
10 | $0.669 | $6.69 |
30 | $0.601 | $18.03 |
100 | $0.536 | $53.60 |
Inventory:5,063
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Part Number : HV857MG-G
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Package/Case : MSOP
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Brands : Microchip Technology
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Components Categories : Lighting, Ballast Controllers
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Datesheet : HV857MG-G DataSheet (PDF)
Overview of HV857MG-G
The HV857 is a high voltage driver designed for driving Electroluminescent (EL) lamps of up to 5 square inches. The input supply voltage range is from 1.8 to 5.0V. 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 ±95V. The chip can be enabled/disabled by connecting the resistor on RSW-Osc to VDD/GND. The HV857 has two internal oscillators, a switching MOSFET, and a high voltage EL lamp driver. 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 RELOsc pin and VDD pin. An external inductor is connected between the LX and VDD pins or VIN for split supply applications. A 0.003- 0.1μF capacitor is connected between CS and ground. The EL lamp is connected between VA and VB. 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 95V, the switching MOSFET is turned OFF to conserve power. The outputs VA and VB are configured as an H bridge and are switching in opposite states to achieve ±95V across the EL lamp.
Key Features
- Patented audible noise reduction
- Patented lamp aging compensation
- 190 VPP output voltage for higher brightness
- Patented output timing for high efficiency
- Single cell lithium ion compatible
- 150nA shutdown current
- Wide input voltage range 1.8 to 5.0V
- Separately adjustable lamp and converter frequencies
- Output voltage regulation
- Split supply capability
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Status | Active | Type | EL Lamp Driver |
Frequency | 1kHz | Voltage - Supply | 1.8V ~ 5V |
Current - Supply | 20 mA | Dimming | No |
Operating Temperature | -40°C ~ 85°C | Mounting Type | Surface Mount |
Package / Case | MSOP-8 | Supplier Device Package | 8-MSOP |
Base Product Number | HV857 | Manufacturer | Microchip |
Product Category | Display Drivers & Controllers | RoHS | Details |
Product | Drivers | Operating Supply Voltage | 5 V |
Minimum Operating Temperature | - 40 C | Maximum Operating Temperature | + 85 C |
Mounting Style | SMD/SMT | Brand | Microchip Technology |
Height | 0.91 mm | Length | 2.95 mm |
Moisture Sensitive | Yes | Product Type | Display Drivers & Controllers |
Factory Pack Quantity | 2500 | Subcategory | Driver ICs |
Width | 3 mm | Unit Weight | 0.004938 oz |
Warranty & Returns
Warranty, Returns, and Additional Information
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QA & Return Policy
Parts Quality Guarantee: 365 days
Returns for refund: within 90 days
Returns for Exchange: within 90 days
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