Microchip

HV9967BDB1

4W LED Driver Demoboard with Accurate Average-Mode Constant Current Control

Topologie: Buck
Eingangsspannung (min.): 20.00 V
Eingangsspannung (max.): 60.00 V
Ausgang 1: 15.00 V / 0.350 A

Beschreibung

The HV9967BDB1 demoboard is a high-brightness LED driver designed to drive 4 LEDs in series at currents up to 350mA from a 20 - 60V DC input. The demoboard uses the Supertex’s HV9967B in a buck configuration in a constant off-time mode.The HV9967BDB1 LED driver features tight regulation of the LED current within a few milliamps over the entire range of the input voltage (i.e. 20 - 60VDC). The LED current accuracy is almost insensitive to the passive component tolerances,such as the output filter inductance or the timing resistor. PWM dimming can be achieved by applying a pulse-widthmodulated square wave signal between the PWMD and GND pins.

Artikel

  Artikel Nr. SPEC Produktserie L
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Bauform Version Muster
744777233 PDF WE-PD SMT-Speicherdrossel 330 0.39 0.45 1150 1860 4 7345 Standard