Promise Logic introduced six-channel backlight charge pump

SUNNYVALE, CA, October 19 / PRNewswire / - This device improves power efficiency and integration by individually controlling three independent LED groups.

Advanced Analogic Technologies Incorporated (NASDAQ: AATI), a semiconductor developer of power-managed semiconductors for mobile consumer electronics, today introduced the versatile and efficient dual charge pump AAT2803 . The device supports white LED (light emitting diode) backlighting and camera flash applications for portable systems with polymer lithium-ion batteries. The AAT2803 can individually control three separate LED groups (two for the backlight and one for the camera flash) and seven channels (six for the backlight and one for the camera flash). In addition, the AAT2803 significantly conserves power and space on a handheld device equipped with two displays and includes a light load mode to minimize power consumption while the handheld's display is on standby.

KinShum, director of strategic marketing at Analog Devices, said: "Most handheld devices today are equipped with two displays: a clamshell design (primary display, secondary display) or a vertical design (with primary display and backlighting Keyboard) By combining separate control of two independent backlight LED banks (with flash function) with light load mode, the AAT2803 charge pump can help designers save energy while reducing the number of components and package size. "

Maximize efficiency

The backlight charge pump can drive up to six LEDs at 180mA. The unit individually controls two groups of four and two LEDs respectively, providing backlighting for the primary and secondary displays. Output operation can be independent or parallel.

The AAT2803 features Yannison's AS2Cwire (TM) (Advanced Simple Serial Control â„¢) digital interface to turn on, off, or set current for any of the 16 log scale backlight LEDs.

Four low-current settings make it possible to operate in light-load mode down to 50uA (normal).

The backlight charge pump in 1X, 1.5X and 2X three modes of operation, in order to achieve maximum power efficiency. By comparing the forward voltage of each LED and the input voltage, the operation mode can be selected automatically. The optimized sink current minimizes the voltage space required to drive each LED and maximizes power efficiency by lengthening the time the device is in 1X mode before switching to 1.5X mode.

Unlike most integrated solutions on the market today, the AAT2803 uses a dedicated charge pump to support the backlight. Therefore, the operation of the backlight will not be affected by the flash photography, because photographic flash by a separate charge pump engine driven.

Flash function

For flash applications, this device enables integration between charge pump and regulated output voltage. The circuit has a continuous current of up to 120mA, pulse current up to 300mA, while the circuit also added a separate start-up pin, in order to maximize system flexibility.

AAT2803 built-in integrated thermal protection, can be automatically shut down in the event of overload short circuit. Its smooth start-up circuit prevents overcurrent during startup. By using a constant 1MHz switching frequency, designers can support the device with tiny ceramic capacitors.

Pricing and listing

Available now, the AAT2803 is available in a lead-free, thermally enhanced 24-pin QFN44 package with a temperature range of minus 40 degrees to 80 degrees. The unit's unit price is 1.97 US dollars (for every 1,000 pieces of batch).

Yannuo logic introduction

Yannuo Logic is a power management semiconductor supplier of mobile consumer electronic devices including wireless handsets, notebooks and tablets, smart phones, digital cameras and digital audio players. The company is engaged in design and sales efforts based on the specific power management needs of consumer, communications and computing applications in these constantly updated devices. Based in Sunnyvale, California, Yannuo Logic has offices in Beijing, Hong Kong, Japan, Shanghai, Shenzhen, South Korea, Sweden and Taiwan with a worldwide network of sales representatives and distributors. For more information, visit AnalogicTech - G.

According to the 1995 "Private Securities Litigation Reform Act" disclaimer

The matters discussed in this press release are forward-looking statements other than statements of historical fact, and forward-looking statements are defined in the 1995 Private Securities Litigation Reform Act. Forward-looking statements, including financial plans and projections, involve many risks and uncertainties and may give rise to a significant discrepancy between the actual results of Enroll's logic and current forecasts. Factors that could cause actual results to differ materially from those in the forward-looking statements include: cancellation or alteration of customer orders; failure of the company to make accurate predictions about product demand; cancellation or reduction of orders by any major customer; and operating results of the company Volatility; failure of the company to develop and sell new products; defects or defects in the company's products; costs and uncertainties in designing to win customers; the financial strength of product distributors; and consumer confidence in mobile phones and Demand for other mobile consumer electronic devices; the economic and political environment in the world, especially in Asia; changes in the cost of production of goods; the dependence of the company on third parties in producing, testing, assembling and transporting its products; the company's attraction and retention of key talent Competence; Competitiveness; The company's ability to protect its own intellectual property rights while not infringing on others' intellectual property rights.

Other factors that may cause actual results to differ from the forward-looking statements in this release, as well as factors that may affect the general picture of this company, are the Company's filings with the Securities and Exchange Commission, including the company's Form S-1 form Form submitted for initial public offering listing registration form. Yannuo Logic does not assume any responsibility to update or revise the forward-looking statements in this document based on future events or developments. SUNNYVALE, CA, October 19 / PRNewswire / - This device improves power efficiency and integration by individually controlling three independent LED groups.

Advanced Analogic Technologies Incorporated (NASDAQ: AATI), a semiconductor developer of power-managed semiconductors for mobile consumer electronics, today introduced the versatile and efficient dual charge pump AAT2803 . The device supports white LED (light emitting diode) backlighting and camera flash applications for portable systems with polymer lithium-ion batteries. The AAT2803 can individually control three separate LED groups (two for the backlight and one for the camera flash) and seven channels (six for the backlight and one for the camera flash). In addition, the AAT2803 significantly conserves power and space on a handheld device equipped with two displays and includes a light load mode to minimize power consumption while the handheld's display is on standby.

KinShum, director of strategic marketing at Analog Devices, said: "Most handheld devices today are equipped with two displays: a clamshell design (primary display, secondary display) or a vertical design (with primary display and backlighting Keyboard) By combining separate control of two independent backlight LED banks (with flash function) with light load mode, the AAT2803 charge pump can help designers save energy while reducing the number of components and package size. "

Maximize efficiency

The backlight charge pump can drive up to six LEDs at 180mA. The unit individually controls two groups of four and two LEDs respectively, providing backlighting for the primary and secondary displays. Output operation can be independent or parallel.

The AAT2803 features Yannison's AS2Cwire (TM) (Advanced Simple Serial Control â„¢) digital interface to turn on, off, or set current for any of the 16 log scale backlight LEDs.

Four low-current settings make it possible to operate in light-load mode down to 50uA (normal).

The backlight charge pump in 1X, 1.5X and 2X three modes of operation, in order to achieve maximum power efficiency. By comparing the forward voltage of each LED and the input voltage, the operation mode can be selected automatically. The optimized sink current minimizes the voltage space required to drive each LED and maximizes power efficiency by lengthening the time the device is in 1X mode before switching to 1.5X mode.

Unlike most integrated solutions on the market today, the AAT2803 uses a dedicated charge pump to support the backlight. Therefore, the operation of the backlight will not be affected by the flash photography, because photographic flash by a separate charge pump engine driven.

Flash function

For flash applications, this device enables integration between charge pump and regulated output voltage. The circuit has a continuous current of up to 120mA, pulse current up to 300mA, while the circuit also added a separate start-up pin, in order to maximize system flexibility.

AAT2803 built-in integrated thermal protection, can be automatically shut down in the event of overload short circuit. Its smooth start-up circuit prevents overcurrent during startup. By using a constant 1MHz switching frequency, designers can support the device with tiny ceramic capacitors.

Pricing and listing

Available now, the AAT2803 is available in a lead-free, thermally enhanced 24-pin QFN44 package with a temperature range of minus 40 degrees to 80 degrees. The unit's unit price is 1.97 US dollars (for every 1,000 pieces of batch).

Yannuo logic introduction

Yannuo Logic is a power management semiconductor supplier of mobile consumer electronic devices including wireless handsets, notebooks and tablets, smart phones, digital cameras and digital audio players. The company is engaged in design and sales efforts based on the specific power management needs of consumer, communications and computing applications in these constantly updated devices. Based in Sunnyvale, California, Yannuo Logic has offices in Beijing, Hong Kong, Japan, Shanghai, Shenzhen, South Korea, Sweden and Taiwan with a worldwide network of sales representatives and distributors. For more information, visit AnalogicTech - G.

According to the 1995 "Private Securities Litigation Reform Act" disclaimer

The matters discussed in this press release are forward-looking statements other than statements of historical fact, and forward-looking statements are defined in the 1995 Private Securities Litigation Reform Act. Forward-looking statements, including financial plans and projections, involve many risks and uncertainties and may give rise to a significant discrepancy between the actual results of Enroll's logic and current forecasts. Factors that could cause actual results to differ materially from those in the forward-looking statements include: cancellation or alteration of customer orders; failure of the company to make accurate predictions about product demand; cancellation or reduction of orders by any major customer; and operating results of the company Volatility; failure of the company to develop and sell new products; defects or defects in the company's products; costs and uncertainties in designing to win customers; the financial strength of product distributors; and consumer confidence in mobile phones and Demand for other mobile consumer electronic devices; the economic and political environment in the world, especially in Asia; changes in the cost of production of goods; the dependence of the company on third parties in producing, testing, assembling and transporting its products; the company's attraction and retention of key talent Competence; Competitiveness; The company's ability to protect its own intellectual property rights while not infringing on others' intellectual property rights.

Other factors that could cause actual results to differ from the forward-looking statements in this release, as well as factors that may affect the general picture of this company, are the Company's filings with the Securities and Exchange Commission, including its filings with the Securities and Exchange Commission Form submitted for initial public offering listing registration form. Yannuo Logic does not assume any responsibility to update or revise the forward-looking statements in this document based on future events or developments.

Dredging is an excavation activity usually carried out underwater, in shallow seas or freshwater areas with the purpose of gathering up bottom sediments and disposing of them at a different location. This technique is often used to keep waterways navigable. It is also used as a way to replenish sand on some public beaches, where sand has been lost because of coastal erosion. Dredging is also used as a technique for fishing for certain species of edible clams and crabs (see fishing dredge).

Photo of our  Dredger :

Types of dredging vessels
Suction
The dredge Drag Head of a suction dredge Barge on the Vistula River, Warsaw, Poland
The Geopotes 14 lifting its boom on a canal in The Netherlands. (gēopotēs is Greek for "that which drinks earth")
For suction-type excavation out of water, see Suction excavator.
These operate by sucking through a long tube, like some vacuum cleaners but on a larger scale.
A Plain Suction Dredger has no tool at the end of the Suction Pipe to disturb the material. This is often the most commonly used form of dredging.[citation needed]

Trailing suction
A trailing Suction Hopper Dredger (TSHD) trails its suction pipe when working. The pipe, which is fitted with a dredge drag head, loads the dredge spoil into one or more hoppers in the vessel. When the hoppers are full, the TSHD sails to a disposal area and either dumps the material through doors in the hull or pumps the material out of the hoppers. Some dredges also self-offload using drag buckets and conveyors.

The largest trailing suction hopper dredgers in the world are currently Jan De Nul's Cristobal Colon (launched 4 July 2008) and its sister ship Leiv Eriksson (launched 4 September 2009. Main design specs for the Cristobal Colon and the Leiv Eriksson are: 46,000 cubic metre hopper and a design dredging depth of 155 m.[3] Next largest is HAM 318 (Van Oord) with its 37,293 cubic metre hopper and a maximum dredging depth of 101 m.

Cutter-suction
A cutter-suction dredger's (CSD) Suction Tube has a cutting mechanism at the suction inlet. The cutting mechanism loosens the bed material and transports it to the Suction Mouth. The dredged material is usually sucked up by a wear-resistant centrifugal pump and discharged either through a pipe line or to a barge. Cutter-suction dredgers are most often used in geological areas consisting of hard surface materials (for example gravel deposits or surface bedrock) where a standard suction dredger would be ineffective. In recent years, dredgers with more powerful cutters have been built in order to excavate harder rock without the need for blasting.

The two largest cutter suction dredgers in the world are currently (as at August 2009) DEME's D'Artagnan (28,200 kW total installed power)and Jan De Nul's J.F.J. DeNul (27,240 kW).both built by IHC Merwede.

Auger suction
This process functions like a Cutter Suction Dredger, but the cutting tool is a rotating Archimedean screw set at right angles to the suction pipe. The first widely used auger dredges were designed in the 1980s by Mud Cat Dredges, which was run by National Car Rental, but is now a Division of Ellicott Dredges. In 1996, IMS Dredges introduced a self-propelled version of the auger dredge that allows the system to propel itself without the use of anchors or cables. During the 1980s and 1990s auger dredges were primarily used for sludge removal applications from waste water treatment plants. Today, auger dredges are used for a wider variety of applications including river maintenance and sand mining.

The most common auger dredge on the global market today is the Versi-Dredge. The turbidity shroud on auger dredge systems creates a strong suction vacuum, causing much less turbidity than conical (basket) type cutterheads and so they are preferred for environmental applications. The vacuum created by the shroud and the ability to convey material to the pump faster makes auger dredge systems more productive than similar sized conical (basket) type cutterhead dredges.

Dredger

Cutter Suction Dredger,Bucket Dredger,Grab Dredger,Trailing Hopper Suction Dredger

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