Distribution Spotlight Innovations Embedded Ultra-High-Efficiency 76V DC/DC Buck Converter Provides superior reliability and greater energy savings ideal for communications infrastructure and industrial equipment The BD9G341AEFJ 3A variable output voltage DC/DC buck converter with integrated high-power MOSFET features class-leading ON resistance and accuracy along with a wide frequency range (50kHz to 750kHz) and industry-low standby current (10uA max.). In addition, ROHM's high-voltage 0.6um BiCDMOS process is utilized to achieve an industry-leading maximum breakdown voltage of 80V (the highest in ROHM’s non-isolated DC/DC converter lineup) and a continuous operating input range of 12 to 76V, while market-proven advanced analog design technology results in the highest conversion efficiency in its class. Applications Key Features • Communications infrastructure (switching stations, routers, telephone systems) • Wide input voltage range: 12V to 76V • High conversion efficiency • Fewer external components required • Compact 8-pin package • Best-in-class ON resistance: 150mΩ • Broad frequency range: 50kHz to 750kHz • Industry-low standby current (10μA max.) • Class-leading accuracy: ±1.5% • Superior current output: 3A • Motors exposed to high surge voltages (electric bicycles, vacuum cleaners) • Factory automation equipment • Industrial machinery Pricing Price: $1.82/unit (2500pcs) Specifications Part No. Input Voltage Range Output Voltage Range Operating Frequency Range RDS(ON) (Typ.) Max Output Current Standby Current (Max.) Operating Temp. Range Package BD9G341AEFJ 12V ~ 76V 1.0V ~ Vcc 50kHz ~ 750kHz 150mΩ 3.0A 10µA -40ºC ~ +85ºC HTSOP-J8 High efficiency design improves energy savings VCC = 48V Efficiency Comparison Measurement Conditions: 300kHz oscillation frequency, 5V output 90 Efficiency (%) 70 120 1.5% 1.5% BD9G341AEFJ BD9G341AEFJ 60 16.3% 50 40 19% 100 Chip surface temp: 32ºC BD9G341AEFJ (VCC=76V) 60 40 12 10 8 20msec stoppage 20 Input Voltage 4 0 0 Provides increased efficiency over a wide range (up to 19%) 1 10 100 Output Current (mA) more info: click here 2 Output Current Conventional 10 6 0 30 20 16 14 No IC damage Short-circuit generated 80 32°C 1000 0 5 10 15 20 25 30 35 40 45 50 Time(msec) The internal protection circuit detects short-circuits and suspends input to the IC for 20msec. This suppresses heat generation, protecting the IC from damage and improving system reliability visit us: www.rohm.com Output Current (A) 80 Short-Circuit Test VOUT-GND Input Voltage (V) 100 Proprietary protection circuit increases reliability