HV857MG Supertex, HV857MG Datasheet
HV857MG
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HV857MG Summary of contents
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... IN Low Noise, High Voltage EL Lamp Driver IC General Description The Supertex HV857 is a high voltage driver designed for driving Electroluminescent (EL) lamps 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 ± ...
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... DD Pin Configuration 8-Lead MSOP VDD 3.00x3.00mm body RSW-Osc 1.10mm height (max) 0.65mm pitch REL-Osc HV857MG-G GND Pads are at the bottom of the package Exposed center pad is at ground potential Product Marking Value -0.5V to 6.5V -40°C to +85°C -65°C to +150°C 1.6W 300mW -0 ...
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... Units Conditions 150 µ 1.8 to 5.0V. See Figure See Figure See Figure 1 275 Hz See Figure 1 - kHz See Figure See Figure High Voltage Level Translator Equivalent to 3.0in lamp 2 2.0kΩ 10nF BAS21 5 220µH* 3.3nF, 100V ● Tel: 408-222-8888 ● www.supertex.com HV857 ...
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... Typical Performance Device Lamp Size HV857MG-G 3.0in 2 Typical Performance Curves for Figure 1.5 2.5 3.5 V (V) IN Brightness 1.5 2.5 3.5 V (V) IN 100 100 150 200 3.3V 20.0mA (EL Lamp = 3.0in 4.5 5.5 1 4.5 5 Brightness vs Inductor Value IN CS Brightness Iin l 250 300 350 400 Inductor Value (µ ...
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... If the input power is greater than IN IN ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 5 resistor connected between REL-Osc and VDD EL decreases. As the EL lamp frequency increases, EL will decrease. The CS resistor by a factor EL decreases. With a given inductor ● Tel: 408-222-8888 ● www.supertex.com HV857 resistor value SW ...
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... Figure 2: Split Supply and Enable/Disable Configuration Enable Signal DD OFF = 0V Regulated Voltage = Audible Noise Reduction This section describes a method (patented) developed at Supertex to reduce the audible noise emitted by the EL lamps used in application sensitive to audible noise. Figure Figure 3: Typical Application Circuit for Audible Noise Reduction Enable OFF = Enable/Disable Confi ...
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... The noisiest waveform is a square wave and the quietest waveform has been assumed sine wave. After extensive research, Supertex has developed a wave- form that is quieter than a sine wave. The waveform takes the shape of approximately 2RC time constants for rising ...
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... NOM 0.75 0.02 (mm) MAX 0.80 0.05 JEDEC Registration MO-229, Variation WEEC-2, Issue C, Aug. 2003. * This dimension is not specified in the original JEDEC drawing. The value listed is for reference only. Drawings not to scale. Supertex Doc. #: DSPD-8DFNK73X3P065, Version B101008. E θ Seating Plane A3 Note ...
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... Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship ...