The Personal Navigation System (PND) has gradually become an indispensable action product for individuals. In response to the generalization of PND, the Kailuan Group of the United Nations General Assembly provides the most suitable PND solution for different needs of customers. For the main and passive parts required for PND internal components, Kathy Group offers the following product line solutions as follows:
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Active-Semi offers the best power management solution for PND:
1. Small and efficient step-down DC/DC-ACT4060/ACT4065/ACT4070 (4.75~20V input 3.3/5V output current 2-3A SOP-8)
2. Very small TFT bias power supply - ACT6311 (3~50mA SOT23-5)
3. Linear regulated power supply
4.CCFL screen backlight solution (ACT6360)
5. LED screen backlight solution (ACT6358)
ALCOR offers the best Flash CR Controller solution for PND:
Flash CR Controller Advantages:
WW No. 1 flash card reader controller vendor today
Good tracking record both in USB1.1 and 2.0 generations
We know what our customers needed
Integrated 5V to 3.3V LDO to save BOM cost
Power saving mode
Flash card over current Protection
HID copy button
Tri-state bus design for other hosts to access the bus
Turbo USB driver ready
Selective suspend driver ready
AME (Anmao Microelectronics) offers the best power management solution for PND:
AME offers the most suitable low dropout LDO & high efficiency DC-DC Switch IC. The full range of AMEs offers dual protection of Over Current Protection and Thermal Shutdown Protection to ensure the safety of the end product. AME currently supplies GPS power management solutions with the following features:
DC-DC BUCK Converter:
AME5248/5248A 1.5MHz, 600mA Synchronous Buck Converter
The AME5248/5248A is a 600mA pulse width modulation/pulse frequency modulation synchronous step-down DC-DC converter (PWM/PFM Synchronous Buck DC-DC Converter) with a low dropout of 100% duty cycle (Duty Cycle) Low Dropout) operation with a maximum efficiency of 95%. At very low loads, the AME5248/5248A automatically enters pulse frequency modulation (Pulse Frequency Modulation) to maintain output regulation, plus 20μA quiescent current and Enable Function to support power-saving mode, all of which extend the portable system Battery operating life. With a fixed 1.5MHz switching frequency, you can use smaller filter components in your design, making it ideal for thin, compact portable devices.
AME5248/5248A provides a fixed output voltage (1.0~3.3V) and adjustable output voltage (0.60~VIN for AME5248 and 0.5V ~ VIN for AME5248A). The operating voltage is 2.5V~5.5V and the operating temperature is –40°C~125°C.
AME5248/5248A Simple Application Circuit 
DC-DC BUCK Converter:
AME5252 Dual Synchronous, 600mA, 1.5MHz Step-Down DC/DC Converter
The AME5252 is a 600mA dual-output Synchronous Buck DC-DC Converter with higher performance and saves board space. The fixed 1.5MHz switching frequency can be used in design. The small filter unit is ideal for small, lightweight and portable devices. The 2.5V to 5.5V input voltage range is suitable for single-lithium battery powered applications. The AME5252 operates in current mode with a 100% duty cycle (Duty Cycle) for low dropout, 96% high efficiency, operating temperature range of –40°C to 125°C, and built-in soft-start function .
AME5252 Simple Application Circuit 
White LED/OLED Driver:
AME5142/5142A/5142B High Efficiency 6 White LED Driver With Open LED Protection
The AME5142 series can drive a single string of 1~6 or more strings of white LED driver components, with a fixed 1.2MHz switching frequency, current control mode DC/DC booster component, built-in N-channel switch to drive 6 series white LEDs . The AME5142 operates from an input voltage range of 2.7V to 5.5V and is suitable for use in single Li-Ion battery powered applications. The 1.2MHz switching frequency can effectively reduce the volume of external inductors and capacitors. Built-in 26V or 28V overvoltage protection prevents undesired high voltages from being created by emptying the load. The highest efficiency is up to 88%, the internal 0.104V reference voltage is provided, and the maximum efficiency can be obtained as the LED current limit; in addition, the AME5142 provides an Enable Function to support the power saving mode and extend the battery life!
AME5142/5142A/5142B Simple Application Circuit
White LED/OLED Driver:
AME5144 High Efficiency, 37V Step-Up Converter for 2 to 10 White LEDs
The AME5144 can drive a single string of 2 to 10 white LEDs and provides 25 mA, current controlled mode DC/DC boost components, and built-in N-channel switch to drive 10 series white LEDs. The AME5144 operates from a 2.6V to 5.5V input voltage range and is suitable for use in a single Li-Ion battery powered application. The 1MHz switching frequency can effectively reduce the volume of external inductors and capacitors. Built-in 38.5V overvoltage protection prevents undesired high voltages from being created by emptying the load. The highest efficiency is 86%. In operation, the Dimming mode of the AME5144 can be controlled by two modes: Analog and Direct-PWM Internal Filter.
AME5144 Simple Application Circuit 
Low Dropout Voltage Regulator:
The internal components of the PND will use many different LDOs to supply the required voltage and current, and many corresponding solutions for this AME. The AME8890 provides a fixed voltage of 1.2V, 150mA current output, low noise, and provides Enable & Power-Good Function, allowing customers to choose between Power-Saving Mode and Power-Good. The AME8818 has both fixed voltage and adjustable output. The output range is 1.2~4.5V, 300mA current output, PSRR is about 60uA, and the Enable & Bypass Function is provided, allowing customers to have Power-Saving Mode and low noise selection applications. The AME8805 provides a fixed voltage of 1.3 to 5.0V, a current output of 600mA, and a quiescent current of approximately 30uA. AME8815 provides fixed voltage 1.5~5.0V, 1.5A current output, quiescent current is about 45uA
AME8890 Simple Application Circuit
Voltage Detector:
The AME8550 can detect a voltage range of 1.6 to 6.0V with a detectable pitch of 0.1V and operates from a voltage range of 1.2V to 6.5V. Only the external AME8550 has a detection accuracy of ±2%, a temperature coefficient of ±100ppm/°C, a quiescent current of approximately 0.8uA, and an output of Open-Drain and Push-Pull. SOT-23/TSOT-23/SOT-25/TSOT-25/SOT-89/SC-70 are available for packaging, giving the client a variety of choices. The customer can adjust the external capacitor to achieve the desired reset delay time.
AMIC (Linked Electronics) offers the best SPI Memory solution for PND:
A25L016M-F & A25L032M-F
Etron offers the best Memory solution for PND:
SirF solution : 16M*16 DDR1 , 32M*16 DDR1 , 32M*16 DDR2 , 64M*16 DDR2
MTK solution : 32M*16 DDR2 , 64M*16 DDR2
The best solution for LEDs is LEDTech: Backlight LED: LT8Axxx full range of LEDs.
Nuvoton offers the best stereo audio codec solution for PND:
Stereo audio codec for portable applications:
The new member of the GentangAemo flagship family, the WAU8822, offers superior audio quality in a battery-powered environment: a stereo digital-to-analog converter with a signal-to-noise ratio (SNR) of 94dB and a stereo analog with a signal-to-noise ratio (SNR) of 93dB. Digital converter. The codec provides a simplified microphone management line, 900 mW (900 mW) speaker power amplification, flexible audio path switching and gain setting, and standby current consumption of only 6 microamps (6 μA).
The unprecedented power management flexibility of the WAU8822 provides very low power consumption in all critical sections, with an advanced graphical evaluation system that helps simplify the work of R&D designers and accelerate time-to-market.
The WAU8822 features improved programmability, versatility and flexibility.
Since the beginning of the widespread use of the Pin foot output and additional functions, many cases show that the WAU8822 allows us to do simple system upgrades without having to redesign the system. For example, voltage power adjustments in important functional areas – such as analog-to-digital conversion (ADC) and digital-to-analog conversion (DAC) – can be reduced in most cases by buffer settings. Use without any system design changes. This provides system designers with system optimization and extended battery life in different application environments.
WAU8822 provides the function of buffer data reading, which can accelerate the design and development of the system and make the terminal products more complete and complete. WAU8822 combines the purpose of time-slot to achieve the purpose of multiple devices transmitting audio data on the same bus.
The WAU8822's evaluation system is controlled through a graphical interface that is easy for users to understand. The evaluation system can shorten the time-to-market of the product, whether during the development phase or the release to production stage, and the quality of the codec can meet the audio requirements of the strict portable product.
The main functions of WAU8822 are as follows:
1. Audio quality digital-to-analog converter (DAC) stereo, up to 48kHz sampling frequency: 94dB signal-to-noise ratio (SNR), -84dB
Total harmonic distortion (THD)
Analog-to-digital converter (ADC) stereo, up to 48kHz sampling frequency: 93dB signal-to-noise ratio (SNR), -80dB
Total harmonic distortion (THD)
2, audio output
a, 900mW bridge (BTL) speaker power amplification
b, 40mW stereo headphone power amplification (at 16Ω load)
c, changeable stereo audio output
3, audio input
a, stereo differential or single-ended input microphone with built-in programmable gain control and automatic volume control loop (ALC ( Automatic Level Control))
b, low noise microphone bias
c. Differential input with common mode suppression
d. Two sets of external audio (AUX) inputs and mixes for microphone or warning tone
4. Digital interface in line with industry specifications
a, standard I2S and PCM and support for programmable time slots (Time-Slot Assignment)
b, 2-wire, 3-wire and 4-wire control interfaces and support for buffer reading
Samsung introduced the best solution for MLCC, é’½, Inductor:
1, MLCC: 0805, 0603, 0402, 0201, 01005 full range of MLCC.
2, Tantalum CAP: PCS, SCE, SCL, SCN, SCS and other full range of power.
3, Chip Inductor: 0805, 0603, 0402 and other full range of Chip Inductor
ViKing offers the best solution for micro ohms and precision resistors:
0805, 0603, 0402, 0201 full range of micro-ohm precision resistors (5%, 1%, 0.1%, 0.01%).
Winbond offers the best SPI Memory solution:
Winbond (Winbond) offers SPI (8M, 16M, 32M, 64M, 128M)
LCD Fast Ethernet POE Switch series with LCD screen visual function POE Switch, is dedicated to the application of video monitoring system and network engineering and design, to provide fast ethernet ports and COMBO ports (Gigabit UPLINK port: fiber and Ethernet port is optional).
It provides fast ethernet adaptive RJ45 port, each RJ45 ports support MDI, MDIX automatic turning and line speed forwarding function, and is compatible with IEEE802.3af/at PoE standard, one of the highest output power is 30W, support PoE status display (including the port output power, short-circuit protection, overload port / light load, PoE off, PoE the total power, and power supply overvoltage / low pressure / temperature alarm). The scroll mode shows the port state, showing the POE state of a page, the residence time is about 5S, according to the data display real-time updates PD end user POE power, state monitoring and troubleshooting, and simplifies the wiring, avoid the power socket of the power supply equipment.
LCD Fast Ethernet POE Switch,LCD Gigabit POE Switch,LCD Fast POE Switch,10/100M POE Switch with LCD Display
Shenzhen N-net Technology Co.,Ltd , http://www.nnetswitch.com