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L6227 Datasheet(PDF) 6 Page - STMicroelectronics |
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L6227 Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 22 page L6227 6/22 (7) Tested at 25°C in a restricted range and guaranteed by characterization. (8) See Fig. 1. (9) Measured applying a voltage of 1V to pin SENSE and a voltage drop from 2V to 0V to pin VREF. (10) See Fig. 2. tD(on)IN Input to out turn ON delay time ILOAD =1.4A, Resistive Load (dead time included) 1.9 µs tRISE Output rise time(8) ILOAD =1.4A, Resistive Load 40 250 ns tD(off)EN Enable to out turn OFF delay time (8) ILOAD =1.4A, Resistive Load 500 800 1000 ns tD(off)IN Input to out turn OFF delay time ILOAD =1.4A, Resistive Load 500 800 1000 ns tFALL Output Fall Time (8) ILOAD =1.4A, Resistive Load 40 250 ns tdt Dead Time Protection 0.5 1 µs fCP Charge pump frequency -25°C<Tj <125°C 0.6 1 MHz PWM Comparator and Monostable IRCA, IRCB Source Current at pins RCA and RCB VRCA = VRCB = 2.5V 3.5 5.5 mA Voffset Offset Voltage on Sense Comparator VREFA, VREFB = 0.5V ±5 mV tPROP Turn OFF Propagation Delay (9) 500 ns tBLANK Internal Blanking Time on SENSE pins 1µs tON(MIN) Minimum On Time 2.5 3 µs tOFF PWM Recirculation Time ROFF = 20KΩ; COFF = 1nF 13 µs ROFF = 100KΩ; COFF = 1nF 61 µs IBIAS Input Bias Current at pins VREFA and VREFB 10 µA Over Current Protection ISOVER Input Supply Overcurrent Protection Threshold Tj = -25°C to 125°C (7) 2 2.8 3.55 A ROPDR Open Drain ON Resistance I = 4mA 40 60 Ω tOCD(ON) OCD Turn-on Delay Time (10) I = 4mA; CEN < 100pF 200 ns tOCD(OFF) OCD Turn-off Delay Time (10) I = 4mA; CEN < 100pF 100 ns ELECTRICAL CHARACTERISTICS (continued) (Tamb = 25 °C, Vs = 48V, unless otherwise specified) Symbol Parameter Test Conditions Min Typ Max Unit |
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