Semiconductor Fuse And Ferrite
Fuse refers to an electric appliance that, when the current exceeds the specified value, melts the fuse and disconnects the circuit with the heat generated by itself.When the current exceeds the specified value for a period of time, the fuse melts and disconnects the circuit with the heat generated by the fuse itself.A current protector made from this principle.The fuse is widely used in high and low voltage power distribution system and control system as well as power equipment.
Ferrite is a metal oxide with ferrous magnetism.As far as electrical properties are concerned, the resistivity of ferrite is much larger than that of single metal or alloy magnetic materials, and it has higher dielectric properties.Ferrite magnetic energy also shows high permeability at high frequencies.As a result, ferrite has become a non-metallic magnetic material widely used in the field of high frequency and weak current.Due to the low ferrite magnetic energy stored in the unit volume, saturated magnetic induction strength (Bs) and low (usually only pure iron 1/3 ~ 1/5), and thus limits its higher requirements in the low-frequency magnetic energy density in the field of high voltage and high power applications.
Semiconductor Fuse, Fuse Cutout, Protection Fuse, Square Fuse, Fuse Link, Ceramic Fuse, Fuse Box, Fuse Resistors YANGZHOU POSITIONING TECH CO., LTD. , https://www.cnpositioning.com
September 13, 2004... (Austin, Texas USA; Santa Clara, California USA and Taipei, Taiwan)... Arques Technology introduces the newest additions to its expanding line of white LED drivers, the AQ9156B and AQ9153. These dual-mode 1X - 1.5X switched-capacitor (charge pump) regulators are ideal for white LED backlighting and photo flash applications. The output is a regulated 4.5V, up to 120 mA output current, and capable of driving up to six parallel white LEDs, over The typical Li-Ion input voltage range from 3.0V to 6.0V.
They feature an efficient, 1.5X charge-pump circuit that uses only two ceramic bucket capacitors and two small filter capacitors for VIN and VOUT, allowing a compact, low profile system design. The LED brightness can be adjusted by applying a PWM signal the ENA Pin. The AQ9156B offers a selectable switching frequency of 262 kHz or 650 kHz, while the AQ9153 features a fixed 650 kHz frequency.
The AQ9156B and AQ9153 offer unique performance advantages over previously available devices, allowing the highest level of efficiency. A proprietary design architecture (patent pending) maintains high efficiency (80%), at both below 3.2 Vin, resulting in longer battery life, and above 5.25V, when an adapter is plugged in, keeping the part cool.
The output voltage is regulated to 4.5V, +/-5% over the line and load ranges, with low output ripple voltage. Internal over-temperature and over-current management provides short circuit protection.
The AQ9156B is available in a small MLP-10 or MSOP-10 package ($0.99 ea/1000), also available in optional Green (halogen-free and Pb-free) packaging. The AQ9153 is available in a very small MSOP-8 package ($0.79 ea/1000). Evaluation parts available.
Contact
Michael Friends
Senior Application Engineer
1779 Wells Branch Parkway
#110-B-374
Austin, TX 78728 USA
Tel: +1 512 329 9835
E-mail: mfriends @ arquestech.com
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