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RS2258PG Datasheet(PDF) 4 Page - Orister Corporation |
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RS2258PG Datasheet(HTML) 4 Page - Orister Corporation |
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4 / 9 page  Page No. : 4/9 DS‐RS2258‐09 May, 2010 www.Orister.com Electrical Characteristics (TA=25°C, VDD=16V, unless otherwise specified) Symbol Parameter Test Conditions Min Typ. Max Unit Supply Voltage (VDD) Istartup VDD Start up Current VDD=14.5V, Measure Leakage current into VDD ‐ 3.0 20 uA IVDD Operation Current VFB=3V ‐ 2.0 ‐ mA UVLO(ON) VDD Under Voltage Lockout Enter ‐ 8.5 9.0 9.5 V UVLO(OFF) VDD Under Voltage Lockout Exit(Recovery) ‐ 14.2 15.8 16.0 V OVP(ON) Over voltage protection voltage CS=0V, FB=3V Ramp up VDD until gate clock is off 27.0 28.5 30.0 V VDD_CLAMP VDD Zener clamp Voltage IDD=10mA ‐ 30 ‐ V Feedback Input Section(FB pin) VFB_OPEN VFB Open Loop Voltage ‐ 5.4 5.6 6.0 V IFB_SHORT FB pin short circuit current Short FB pin to GND and measure current ‐ 1.55 ‐ mA VTH_0D Zero Duty Cycle FB Threshold Voltage ‐ ‐ 0.8 ‐ V VTH_PL Power Limiting FB Threshold Voltage ‐ ‐ 3.7 ‐ V TD_PL Power Limiting Debounce Time ‐ ‐ 50 ‐ ms ZFB_IN Input Impedance ‐ ‐ 4 ‐ KΩ Current Sense Input(Sense Pin) TSOFTSTART Soft start time ‐ ‐ 4 ‐ ms TBLANKING Leading edge blanking time ‐ ‐ 300 ‐ ns ZSENSE_IN Input Impedance ‐ ‐ 40 ‐ KΩ TD_OC Over Current Detection and Control Delay From Over Current Occurs till the Gate drive output start to turn off ‐ 120 ‐ ns VTH_OC Internal Current Limiting Threshold Voltage FB=3.3V 0.76 0.8 0.82 V Oscillator FOSC Normal Oscillation Frequency ‐ 45 50 55 KHz ΔFTEMP Frequency Temperature Stability ‐ ‐ 5 ‐ % ΔF_VDD Frequency Voltage Stability ‐ ‐ 5 ‐ % DMAX Maximum duty cycle FB=3.3V, CS=0V 70 80 90 % FBURST Burst Mode Base Frequency ‐ ‐ 22 ‐ KHz Power MOSFET Section B_VDSS MOSFET Drain Source Breakdown Voltage 6 0 ‐ ‐ V RDS(ON) Static Drain to Source On Resistance VGS=10V, IDS=1A ‐ 3.0 3.6 Ω Frequency ΔF_VDD Frequency Modulation range /Base frequency ‐ ‐4 ‐ 4 % 4 % ‐ |
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