BD28C51FJ-LBE2

BD28C51FJ-LBE2 is a BD28C5xFJ-LB series PWM-type DC/DC converter IC. The PWM type DC/DC converter for AC/DC provides an optimal system for all products that require an electrical outlet. This IC supports both isolated and non-isolated devices and enables simpler designs of various types of low-power consumption electrical converters. This IC has a lineup of VDD UVLO that supports both Si and SiC MOSFETs. Power supplies can be designed flexibly by connecting a current detection resistor for the switching externally. The current is restricted in each cycle and excellent performances are demonstrated in the bandwidth and transient response since a current mode control is utilized. The switching frequency can be set by an external resistor and a capacitor on the RTCT pin. Applications include industrial equipment and PV inverters.

• PWM current mode method, overcurrent protection function per cycle
• Input voltage range : 6.90V to 28.00V
• Circuit current: 2.0mA (max) at VDD = 20V, Ta =-40°C to +125°C
• Startup current: 60µA typ at VDD = 6.5V, Ta =-40°C to +125°C
• 7.0V / 6.6V VDD UVLO
• 50% max ON duty
• Unity gain bandwidth: 1.5MHz typ at VDD = 20V, Ta =-40°C to +125°C
• Over current protection voltage is 1V at VFB < 2.4V typ at VDD = 20V, Ta =-40°C to +125°C
• SOP-J8 package
• Operating temperature range from -40°C to +125°C