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L6227N 데이터시트(PDF) 5 Page - STMicroelectronics |
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L6227N 데이터시트(HTML) 5 Page - STMicroelectronics |
5 / 22 page 5/22 L6227 (6) Also connected at the output drain of the Over current and Thermal protection MOSFET. Therefore, it has to be driven putting in series a resistor with a value in the range of 2.2K Ω - 180KΩ, recommended 100KΩ. 23 8 ENA Logic Input (6) Bridge A Enable. LOW logic level switches OFF all Power MOSFETs of Bridge A. This pin is also connected to the collector of the Overcurrent and Thermal Protection transistor to implement over current protection. If not used, it has to be connected to +5V through a resistor. 24 9 VREFA Analog Input Bridge A Current Controller Reference Voltage. Do not leave this pin open or connect to GND. ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, Vs = 48V, unless otherwise specified) Symbol Parameter Test Conditions Min Typ Max Unit VSth(ON) Turn-on Threshold 5.8 6.3 6.8 V VSth(OFF) Turn-off Threshold 5 5.5 6 V IS Quiescent Supply Current All Bridges OFF; Tj = -25°C to 125°C (7) 510 mA Tj(OFF) Thermal Shutdown Temperature 165 °C Output DMOS Transistors RDS(ON) High-Side +Low-Side Switch ON Resistance Tj = 25 °C 1.47 1.69 Ω Tj =125 °C (7) 2.35 2.7 Ω IDSS Leakage Current EN = Low; OUT = VS 2mA EN = Low; OUT = GND -0.3 mA Source Drain Diodes VSD Forward ON Voltage ISD = 1.4A, EN = LOW 1.15 1.3 V trr Reverse Recovery Time If = 1.4A 300 ns tfr Forward Recovery Time 200 ns Logic Input VIL Low level logic input voltage -0.3 0.8 V VIH High level logic input voltage 2 7 V IIL Low Level Logic Input Current GND Logic Input Voltage -10 µA IIH High Level Logic Input Current 7V Logic Input Voltage 10 µA Vth(ON) Turn-on Input Threshold 1.8 2.0 V Vth(OFF) Turn-off Input Threshold 0.8 1.3 V Vth(HYS) Input Threshold Hysteresis 0.25 0.5 V Switching Characteristics tD(on)EN Enable to out turn ON delay time (8) ILOAD =1.4A, Resistive Load 500 800 ns PIN DESCRIPTION (continued) |
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