LCD colour displays enhanced with white LED driver and LCD boost converter
7 May 2003
Power Electronics / Power Management
Texas Instruments has released a new 28 V white light-emitting diode (LED) driver and a liquid crystal display (LCD) boost converter that significantly helps control brightness and improve quality of LCDs in portable applications.
In addition to the new white LED driver, TI's TPS61045 adjustable LCD bias boost converter features a digitally programmable output of up to 28 V, which allows for precise contrast control of small- to medium-sized LCD displays without the need for any external components. In addition, the device provides a true shutdown feature that disconnects the load from the input and provides controlled power up/down sequencing of the display.
TI's TPS61042 high frequency white LED driver has a 1,8-6 V input range and supplies output voltages up to 28 V. It can drive up to eight white LEDs with a constant current. The driver allows the LED current to be set with an external sense resistor. To control LED brightness, the LED current can be pulsed by applying a pulse width modulated (PWM) signal with a frequency range of 100 Hz to 50 kHz to a control pin. Brightness levels can also be controlled by an analog signal if desired.
Both converters feature a high switching frequency of 1 MHz, reducing a portable designer's reliance on external components. Each device comes in a 3 x 3 mm 28-pin QFN package.
For more information contact Avnet Kopp, 011 809 6100, sales@avnet.co.za, www.avnet.co.za
Further reading:
40 W and 75 W railway DC/DC converter
Brabek
Power Electronics / Power Management
RECOM has announced two new cost-efficient DC/DC converters for the rail market with an ultra-wide 11:1 input range to cover all nominal input voltages from 24 to 110 V DC.
Read more...
High-precision current transducer
Power Electronics / Power Management
Danisense announces its new high-precision DP12IP current transducer designed for isolated DC and AC current measurement in demanding PCB-mounted power electronics applications.
Read more...
Secure holder for protected 18650 batteries
Power Electronics / Power Management
Designed for protected 18650 batteries up to 70 mm long, the holder offers secure retention for portable, industrial, and embedded applications.
Read more...
More room to scale
Altron Arrow
Power Electronics / Power Management
With the latest STM32H5 lines from STMicroelectronics, you can now scale within the same platform, from a compact 1 Mbyte device to higher-memory MCUs for graphics-rich and feature-heavy designs.
Read more...
Surface mount power amplifier for high-power applications
RF Design
Power Electronics / Power Management
The GNA-63-5W+, from Mini-Circuits, is a GaN MMIC Power Amplifier (PA) designed for demanding RF applications requiring high efficiency, excellent linearity, and a compact footprint.
Read more...
1200 V QSiC modules
Power Electronics / Power Management
SemiQ Inc has launched the QSiC Dual3, a family of 1200 V half-bridge MOSFET modules for motor drives in data centre cooling systems, grid converters in energy storage systems, and industrial drivers.
Read more...
MCOTS transient filter for military applications
RFiber Solutions
Power Electronics / Power Management
SynQor has announced the new MCOTS-F-28-T-HE transient half-brick filter, the latest addition to its MCOTS product family.
Read more...
Expanded range of high-thermal-performance QSiC modules
Power Electronics / Power Management
SemiQ’s half-bridge series for data centre power converters and industrial motor drives features low RDSON SiC MOSFETs and parallel SBD diodes for best-in-class power density and conversion efficiency.
Read more...
Transporting lithium batteries and IoT devices
Power Electronics / Power Management
With billions of rechargeable and non-rechargeable lithium cells and batteries powering most of the world’s consumer and industrial electronic devices, shipping them to customers through vast global logistics chains is often an overlooked topic.
Read more...
Setting a new benchmark for high-power DC load testing
Conical Technologies
Test & Measurement Power Electronics / Power Management
The new ITECH IT8900G/L high-speed, high-power DC electronic load offers a powerful combination of speed, scalability, precision and high-power density.
Read more...
printer friendly version