Optoelektronik, Aktive Bauelemente, BECK Elektronik

LED Driver

White LED Driver (TS1916CX6)

The TS1916CX6 is a step-up (Boost) converter designed for driving up to 10 series white LEDs. 
The TS1916 uses current mode, 1 MHz fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low feedback voltage reduces power loss and improves efficiency. The over voltage protection pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition.

Features:

  • 2.5V to 5.5V operating input voltage range
  • Drives up to 10 series White Light LED
  • 1MHz fixed switching frequency
  • Wide range for PWM dimming (200Hz to 200KHz)
  • Internal 1.7A switch current limit
  • Over voltage protection (OVP)
  • Internal soft-start function
  • Current limit and Thermal shutdown protection
  • Under voltage lockout (UVLO)

Applications:

  • Digital Still Cameras
  • Portable Electronics
  • PDA’s and Palm-Top Computer
  • Local Boost Regulator

Buck Current Control LED Driver (TS19720CX6)

The TS19720CX6 is a high power factor and high accuracy constant current PWM controller.
It is able to control total harmonic distortion and efficiency optimization by an external resistor. TS19720 achieves high power factor and high efficiency by boundary conduction mode. The line and load regulation of LED current are within ±2.5 %. TS19720 also provides gate driving voltage clamping, VCC over-voltage protection, and system output open/short circuit protection to increase IC performance.

Features:

  • Low THD < 15%
  • Constant Current Accuracy within ±2.5%
  • High Pow Factor > 0.9
  • Boundary Current Mode Control
  • LED Open Protection
  • LED Short Protection
  • Over Current Protection
  • Over Thermal Protection

Applications:

  • Digital Still Cameras
  • Portable Electronics
  • PDA’s and Palm-Top Computer
  • Local Boost Regulator

Primary Side Regulation LED Driver (TS19705CX6)

The TS19705CX6 is a primary-side-regulation LED Driver with Fly-back control IC with active power factor correction function for LED lighting applications.
The IC achieves high power factor and low Total Harmonic Distortion (THD) operation by Boundary Conduction Mode (BCM). The line and load regulation of LED current is about <±3% because of particular control method.

Features:

  • Constant Current Accuracy within <±3%
  • Primary-Side Feedback Control
  • Application Voltage Range: 90~264VAC
  • Transition-Mode PFC Operating
  • Built-in Active Power Factor Correction
  • Constant Output Current Control
  • Good Line and Load Regulation
  • Open-LED Protection on DMG pin
  • Over-Voltage Protection on VCC pin
  • Short-LED Protection
  • Cycle by Cycle Over
  • Current Protection on CS pin
  • Over-Temperature Protection
  • Gate Driving Voltage Clamping

Applications:

  • Digital Still Cameras
  • Portable Electronics
  • PDA’s and Palm-Top Computer
  • Local Boost Regulator

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