Michael Jennings, director of display product marketing for Freescale's analog mixed-signal and power management division, said the MC34845 driver helps manufacturers avoid the many problems that LED drivers can experience at lower frequencies. Advanced technologies such as the MC34845 will help drive LED backlighting in the global notebook market.
The high speed LED driver supports PWM up to 100kHz and pulse widths down to 200ns. This feature is suitable for a 1000:1 dimming range at the 25 kHz frequency level and provides excellent linearity in this range, supporting very fine dimming initiatives. The driver is also very accurate, supporting ±2% of maximum current matching over the -40 to +85° operating temperature, which helps to improve display consistency. It uses a single direct drive PWM input to drive the output.
The MC34845 uses a boost converter to generate the required voltage to power the LED. Both versions can be used for the boost switching frequency of 600Khz (MC34845) or 1.2MHz (MC34845A). The input range supports 2 and 3 sections of battery or fixed input power. The high-voltage output capability allows the device to drive 96 white LEDs with more drives than the competing 6-channel design. The dynamic margin control automatically sets the output voltage according to the voltage requirements of the LED.
The MC34845 supports low-power shutdowns with a maximum supply current of only 1uA. In addition, with the automatic shutdown mode, the device shuts down after the PWM input is inactive for a certain period of time.
21.5 Inch All In One Touch PC main data:
1. Display: 21.5 inch Projected Capacitive Touch Screen
2. Aspect Ratio: 16:9
3. Max. Resolution: 1920 * 1080
4. Dot Pitch: 0.2482×0.2482 mm
5. Contrast Ratio: 1000:1
6. Brightness (nits): 250
7. Display Color (Max): 16.7M
8. Viewing angel:75º/75º/60º/60º
9. OSD language: English
10. Configuration:A64 Main board,RAM: 1G (Standard); ROM: 8G (Standard)
11. Ethernet port: 10/100M adaptive RJ45 port*1
12. USB port: USB HOST*2 (Main board*1; Mini board *1); USB OTG*1
13. Input power:110~240V 50HZ/60HZ
14. Rated power:＜50W
15. Assembling: Bracket (Standard)
Optional:
Main board: A83
RAM: 1G (2 GB, 4GB optional)
ROM: 8G (16GB, 32GB optional)
Built-in high fidelity speaker(8Ω5W*2)
Camera: 500M pixel (Wide viewing angel)
Assembling: VESA wall mount
Functional Characteristics
1. Video synchronization: Audio and video synchronization; Program fast switching.
2. Deployment management: Distributed deployment; Centralized management.
3. Real-time play: Real-time setting and modification of audio and video, pictures, text and multimedia contents.
4. Full support: Various conventional audio and video formats and support for 1920 * 1080 HD display.
5. Multiple subtitles: Support Chinese and English rolling subtitles; Multi subtitles scroll direction and mode selection.
6. Program customization: Control program play list and play mode by program.
7. Easy playing: Support local downloading and streaming media playback mode.
8. Smart play: The player will automatically play the specified program list, which will support the timing of dormancy and recovery.
9. Support network: Multiple ways like Ethernet, 3G or wireless network.
10. Remote management: Remote program transmission and management which can monitor the working status of a large number of players in real time.
11. Remote upgrade: Support OTA remote upgrade without technical personnel to the player terminal to operate
12. System: Original ecosystem Android5.1 or above system; Open root access, can be customized for development
13. High integration: Set an LVDS/USB/WAN/HDMI/VGA/CVBS/SATA/WIFI/WCDMA; Simplify the machine design; Support insert SD card and connect SATA hard disk.
14. High definition: Support LVDS signal lcd display with or below resolution of 1920*1080. Better demodulation of various input signals, including powerful audio and video processing functions which an output high-quality images and sound quality.
15. Super video codec: Supports Full HD ( 1920*1080p ) video decoding; Supports AVI, MPG, RM, RMVB, FLV, MP4, VOB, WMV, MKV and other formats.
Other sizes is available from 10.1 inch to 32 inch.
These sizes are with IPS Panel : 10.1 inch, 13.3 Inch, 15.6 inch 1920*1080, 23.6 inch, 24 inch, 27 inch and 31.5 inch 1920*1080.
Shenzhen Bolinia Technology
Co., Ltd. is a manufacturer for 7-24 inch lcd
monitors and displays over 10 years. Original factory with assembling line in
Shenzhen. Product ranges from plastic monitor, Metal Monitor , resistive touch
monitor, Capacitive Touch Monitor, Open Frame Monitor , Embedded Monitor to SDI
broadcasting monitor. Square monitor or wide screen monitors are available with
different resolutions. Newly launched 10.1-32 inch All In One PC and portable LCD
monitors.
High Brightness Monitor
from 10 inch to 22 inch.
Mirror Image Monitor with
size: 8 inch, 9.2 inch, 10.4 inch, 12.1 inch, 15 inch, 17 inch, 19 inch, 20.1
inch and 22 inch.
Portable LCD Monitor with 12.5 inch , 13.3 inch and 15.6 inch.
Plastic or metal casing monitor from 7 inch
to 24 inch.
Single Touch Monitor with resistive 4 wire and 5 wire for options from 7 inch
to 22 inch.
Multi-touch projected capacitive touch ( PCAP Touch or PCT) monitor from 8 inch
to 24 inch.
SDI monitor from 15 inch to 21.5 inch.
All in One PC with Android system with 10.1 inch, 13.3
inch, 15 inch, 15.6 inch, 18.5 inch, 21.5 inch, 23.6 inch, 24 inch, 27 inch and
31.5 inch.
Products mainly used in ATM, POS, CCTV security, Information checking, Kiosk,
BGA repairing station, Lottery terminals, microscopes and similar applications. Portable LCD monitors perfectly compatible to PS4/PS3/PS2/Xbox ONE/Xbox 360, game consoles,
PCs, Macs, Raspberry Pi, laptops, cameras and tablets.
21.5 Inch All in One Touch PC
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Shenzhen Bolinia Technology Co., Ltd. , http://www.bolinia.com