Fairchild Semiconductor's latest release of the FAN5701 LED driver product with 92% peak efficiency and long battery life for designers of mobile phones, gaming devices, MP3 players and other small display applications with LED backlights FAN5702. These devices are based on 1x to 1.5x charge pump type 180mA, 6-channel LED drivers for backlighting applications such as TFT LCD displays for mobile electronics. The low conversion voltage from 1x to 1.5x mode allows it to operate in 1x mode for longer periods of time for higher efficiency. Both LED driver products are configurable for clamshell phones with primary/secondary displays.
The FAN5702 is a configurable, 180mA, 6-channel LED driver with an I2C interface that offers the following benefits:
Design flexibility: In addition to LCD display backlighting, the device can also be used in a variety of other lighting applications, such as red/green/blue (RGB) indicators or entertainment lighting.
I2C interface: Allows the designer to control the LED output (2, 1, 1, 1, 1 format) separately, and combine and separate the LEDs according to the design requirements.
Better brightness control: Each LED output supports 64 logarithmic-dimming steps, which eliminates distortions that are common at low brightness.
Enable pin: Provides direct on/off control for the baseband chipset.
Supports dynamic backlight control (DBC) PWM signal input: DBC function can automatically adjust LED brightness according to image content, helping to reduce power consumption.
DBC function with ambient light sensor: Provides dynamic backlighting and ambient light control, saving up to 50% in power consumption.
The FAN5701 is a cost-effective LED driver that uses two PWM inputs to control the brightness of the four and two LED outputs. It is suitable for backlighting two LCD displays or driving in a mobile phone. Applications such as high-brightness LEDs for low-power camera flashes.
The FAN5701 and FAN5702 are available in a compact 16-bump WL-CSP and 16-pin UMLP package to accommodate the slim, small form factor of today's portable designs. The FAN5701 and FAN5702 in WL-CSP package are the smallest footprint solutions on the market, with a footprint of 2.56mm2, which helps save PCB space. These two LED drivers are part of Fairchild's comprehensive portfolio of mobile solutions that reduce power consumption, save space, and support the rich features of mobile applications.
Price: 1,000 orders, $0.72 for FAN5701 and $0.95 for FAN5702: FAN5701 and FAN5702 in WL-CSP package are available now, and UMLP version will be available in June 2010.
The advantage of USB Cable Type C is that it supports higher current, that is that more current can be passed by Type-C in the same time. In this way, the charging speed of the device can be accelerated. At present, the charging current of most Type-C data lines is generally 2A. If the charging rate of 3A is to be reached, a high-current wall charging matching it is required. That is to say, if the wall charge only supports 1A, whether it is charged with 2A or 3A data line, there is no difference fundamentally. If the current supported by the wall charging is 2A, and the type-C data cable of 2A/3A is matched, the effect can be significantly changed.
In addition, the device equipped with the Type-C interface can be charged by connecting the mobile power supply through the Type-C cable or Usb C Cable. Users do not need to carry the charging cable, but can have the wall charging and Type-C cable. In addition, when selecting a Type-C charging cable, We should pay attention to the current limit. The charging data cable 1A does not have fast charging performance, 2A is the most commonly used Type-C charging data line, and 3A is the best data line at present. If you want to have fast charging effect, you must choose the Type-C charging data line with 3A current.
The highlights of Type-C interface are thinner design, faster transmission speed (USB3.1 up to 10Gbps) and stronger power transmission (up to 100W).The biggest feature of Type-C double-sided plugable interface is that it supports double-sided insertion of USBinterface. Officially solved the USB never insert the worldwide problem, the front and the back of the random plug.The USB Cable used with it must also be thinner and lighter.
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