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NCP3134 Datasheet(PDF) 6 Page - ON Semiconductor |
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NCP3134 Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 13 page NCP3134 www.onsemi.com 6 Table 4. ELECTRICAL CHARACTERISTICS (VDD = VIN = 3.3 V and VDD = VIN = 5.0 V, over recommended free air temperature range, −40 °C ≤ TJ ≤ 125°C, PGND = GND unless otherwise noted) Parameter Units Max Typ Min Test Conditions Symbol LOGIC PINS: I/O VOLTAGE AND CURRENT EN high threshold voltage 1.1 1.18 1.30 V EN hysteresis 0.18 0.24 V EN input pull up resistor 1.2 M W PS mode threshold voltage Level 1 to Level 2 2.2 V PS source 10 mA pull−up current when enabled 8 10 12 mA INTERNAL BST DIODE Reverse−bias leakage current VBST = 6.6 V, Vin = 3.3 V, TA = 25°C 1 mA SOFT STOP Output discharge on−resistance EN = 0, VIN = 3.3 V, Vout = 0.5 V 20 W TIMERS: SOFT START Soft start ramp−up time TSS Rising from Vss = 0 V to Vss = 0.6 V 1.0 ms Delay after EN asserting EN = ‘HI’ 0.2 ms Switching frequency control Forced CCM mode 1.98 2.2 2.42 MHz PWM Minimum ON time FCCM mode or Automatic CCM/DCM mode 60 ns Minimum OFF time FCCM mode or Automatic CCM/DCM mode 70 ns PWM ramp amplitude (Note1) 2.9 V < VIN < 5.5 V VIN/4 V Maximum duty cycle, FCCM mode or Automatic CCM/DCM mode FsW = 2.2 MHz, 0°C < TA < 85°C 80 % THERMAL SHUTDOWN Thermal shutdown threshold (Note 1) 160 °C Thermal shutdown hysteresis (Note 1) 10 °C Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 1. Guaranteed by design, no production test. 2. Guaranteed by characterization. |
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