AC/DC Controller IC for non-dimmable LED lighting

Topologie: Flyback
Eingangsspannung (min.): 240.00 V
Eingangsspannung (max.): 240.00 V
Schaltfrequenz (min.): 60.00 kHz
Schaltfrequenz (max.): 70.00 kHz
Ausgang 1: 50.00 V / 0.130 A

Erstveröffentlichung am 25.07.2013, Version 001 vom 31.03.2014


LED driver BD550FHG supports both isolated and non-isolated devices. IC enables simple design of low-power electrical converters. With switching MOSFET and current detection resistor as external devices, it enables more freedom in design. Since the peak current control is utilized, peak current
is controlled in each cycle, application excels wide bandwidth and transient response. BD550FHG includes various protective functions such as soft start function, burst function, per-cycle over current limiter, VCC overvoltage protection and overload protection. An external latch pin (COMP pin) is provided, so that latch stopping (OFF) can be set by external signals.
This function is available as overheating protection and over output voltage protection. The PWM switching frequency is fixed at 65 kHz. A frequency hopping function is included which contributes to low EMI.


  • PWM frequency of 65kHz
  • PWM current mode method
  • Low circuit current when UVLO is ON (12µA at VCC=12V)
  • Low circuit current without load
  • (Burst operation when load is light)
  • Built-in SW frequency hopping function
  • 250nsec leadin


Artikel Nr. SPEC Produktfamilie Muster
7608000906 PDF PFC Transformer