Home > Products > Integrated Circuits (ICs) > POWERWISE

POWERWISE

Two-Channel Individual Dimmable LED Driver with Boost Converter and Fast Current Regulator

Models#:
POWERWISE
Manufacturer :
International Semiconductor Technologies
Datasheet :
POWERWISE PDF
Minimum :
1
Quantity:
Stock : 3795
  • 1-9
  • 10-49
  • 50-99
  • 100-249
  • 500-999
  • ›=1000
POWERWISE
International Semiconductor Technologies
Images are for reference only.
Payment:
Payment
Shipping:
Shipping More
Estimated Delivery Time: Mar 27 - Apr 01 days (choose Expedited at checkout).
Manufacturer:
International Semiconductor Technologies
Datasheet:
POWERWISE PDF

Request for Quotation

Warm Tips: Please fill out the below form and we will contact you as soon as possible.
* Buy Quantity Target Price  (USD)
* Contact Name Country
* E-mail
Phone
Company
Content
 

Product Details

The LM3492 integrates a boost converter and a two-channel current regulator to implement a high efficient and cost effective LED driver for driving two individually dimmable LED strings with a maximum power of 15W and an output voltage of up to 65V. The boost converter employs a proprietary Projected-On-Time control method to give a fast transient response with no compensation required, and a nearly constant switching frequency programmable from 200 kHz to 1 MHz. 

The application circuit is stable with ceramic capacitors and produces no audible noise on dimming. The programmable peak current limit and soft-start features reduce current surges at startup, and an integrated 190 mΩ, 3.9A N-Channel MOSFET switch minimizes the solution size. The fast slew rate current regulator allows high frequency and narrow pulse width dimming signals to achieve a very high contrast ratio of 1000:1 at a dimming frequency of more than 3 kHz. 

The LED current is programmable from 50 mA to 200 mA by a single resistor. To maximize the efficiency, Dynamic Headroom Control (DHC) automatically adjusts the output voltage to a minimum. DHC also facilitates a single BOM for different number of LED in a string, which is required for backlight panels of different size, thereby reducing overall development time and cost. 

The LM3492 comes with a versatile COMM pin which serves as a bi-directional I/O pin interfacing with an external MCU for the following functions: power-good, over-temperature, IOUT over- and under-voltage indications, switching frequency tuning, and channel 1 disabling. Other supervisory functions of the LM3492 include precise enable, VCC under-voltage lock-out, current regulator over-power protection, and thermal shutdown protection. The LM3492 is available in the thermally enhanced eTSSOP-20 package.

Related Products

Popular Electronic Parts

  • SPARQ
    SPARQ LeCroy, LeCroy Corporation, a leading supplier of oscilloscopes, protocol analyzers and serial data test solutions, today announced the launch of a new class of instrument, the SPARQ series of Signal Integrit
  • MB95R203A
    MB95R203A Fujitsu Semiconductor Europe, Fujitsu 8-bit MCU with Embedded FRAM Memory Delivers Ultra-High Speed Access with Low Power, Small Footprint, and Optimal Data Retention
  • LEC-2026
    LEC-2026 Lanner Electronics, Fanless Intel Atom 1.6Ghz embedded system with VGA, 6 GbE LAN, 2 USB, COM ports, CF and SATA drive support
  • RWY 150
    RWY 150 Absopulse Electronics, 150W, Encapsulated DC/DC Converter for Railway and other Heavy Duty Applications RWY 150 Series
  • PSM03K
    PSM03K Phihong USA, 2.5W Compact Fixed Blade Charger (United Kingdom) EPS Version 2.0 Compliant USB Adapter
  • XPEDITE5570
    XPEDITE5570 Extreme Engineering Solutions (X-ES), Freescale QorIQ� P2020 Processor-Based Conduction- or Air-Cooled 3U VPX-REDI Module
  • PSM03E
    PSM03E Phihong USA, 2.5W Compact Fixed Blade Charger (Europe) EPS Version 2.0 Compliant USB Adapter
  • E-5 DSLR
    E-5 DSLR Olympus America, New Olympus E-5 DSLR for Professional Shooters Expands Legacy of Innovation
  • PSM03A
    PSM03A Phihong USA, 2.5W Compact Fixed Blade Charger EPS Version 2.0 Compliant USB Adapter
  • PCI-104
    PCI-104 Acrosser Technology, AR-B104D 24 Channel Super Digital I/O, SRAM & CAN Bus PCI-104 Module