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Microchip HV9967BDB1

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

Details

TopologieAbwärtswandler
Eingangsspannung20-60 V
Ausgang 115 V / 0.35 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.

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IRP,40K
(A)
ISAT
(A)
RDC max.
(mΩ)
BauformVersion Muster
744777233SPEC
8 Dateien WE-PD SMT-Speicherdrossel 330 0.64 0.45 1860 7345 Standard
Artikel Nr. Daten­blatt Simu­lation
744777233SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IRP,40K
(A)
ISAT
(A)
RDC max.
(mΩ)
BauformVersion Muster