LV5769VZ-TLM-E ON Semiconductor

Ordering number : ENA1920A LV5769V Bi-CMOS IC LV5769V Recommended Operating Conditions at Ta = 25C Parameter Symbol Conditions Ratings Unit Supply voltage range V 8.5 to 42 V IN Error amplifier input voltage V 0 to 1.6 V FB Oscillatory frequency F 80 to 500 kHz OSC Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. Electrical Characteristics at Ta = 25 C, V = 12V CC Ratings Parameter Symbol Conditions Unit min typ max Reference voltage block Internal reference voltage Vref Including offset of E/A 0.6540.67 0.686V 5V power supply V I = 0 to 5mA 4.7 5.2 5.7 V DD OUT Triangular waveform oscillator block Oscillation frequency F RT=220k 110125 140kHz OSC Frequency variation F V = 8.5 to 32V 1 % OSC DV IN Oscillation frequency fold back V FB voltage detection after SS ends 0.1 V OSC FB detection voltage Oscillation frequency after fold F 1/3F kHz OSC FB OSC back ON/OFF circuit block IC start-up voltage V on 2.5 3.0 3.5 V EN IC off voltage V off 1.1 1.3 1.5 V EN Soft start circuit block Soft start source current I SC EN > 3.5V 4 5 6 A SS Soft start sink current I SK EN < 1V, V = 5V 2 mA SS DD UVLO circuit block UVLO lock release voltage V 8 V UVLO UVLO hysteresis V 0.7 V UVLO H Error amplifier Input bias current I 100nA EA IN Error amplifier gain G 1000 1400 1800 A/V EA Sink output current I FB = 1.0V -100 A EA OSK Source output current I FB = 0V 100 A EA OSC Current detection amplifier gain GISNS 1.5 over current limiter circuit block Reference current I -10% 18.5 +10% A LIM Over current detection V -5 +5 mV LIM OFS comparator offset voltage Over current detection V-0.45 V V IN IN comparator common mode input range PWM comparator Input threshold voltage Vt max Duty cycle = DMAX 0.9 1.0 1.1 V (F =125kHz) OSC Vt0 Duty cycle = 0% 0.4 0.5 0.6 V Maximum ON duty DMAX 86 90 95 % Output block Output stage ON resistance R 5 ONH (the upper side) Output stage ON resistance R 5 ONL (the under side) Output stage ON current I 240 mA ONH (the upper side) Output stage ON current I 240 mA ONL (the under side) Continued on next page. No.A1920-2/9