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L9780 数据表(PDF) 49 Page - STMicroelectronics |
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L9780 数据表(HTML) 49 Page - STMicroelectronics |
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49 / 56 page  DocID026356 Rev 3 49/56 L9780 Electrical characteristics 55 7.2 AC characteristics VCCD = VCCA = VCCCP = 4.9 V to 5.1 V, VCCI = 3.14 V to VCCD, Rbg = 12.1 kΩ ±1%, Tamb =-40 °C to 125/150 °C. Timing is considered with respect to 20 % and 70 % of VCCA unless otherwise specified. Table 15. AC parameters Parameter Conditions Min. Max. Unit Internal oscillator Clock frequency (FOSC) TOSC = 1/FOSC 3.8 4.2 MHz POR (power on reset) POR filter time - 10 20 μs INRC amplifier Bandwidth - 200 - kHz Slew rate - 1.5 - V/μs RCT2 amplifier Bandwidth - 200 - kHz Slew rate - 1.5 - V/μs Integrator amplifier Bandwidth - 1 - MHz Slew rate - 1.5 - V/μs FVOUT amplifier: S&H Time constant Sample mode - 1 μs Voltage sag Hold mode 0 0.5 mV/μs Synchronization delay - 0 16 μs Scaling amplifier: S&H Time constant Sample mode - 1 μs Voltage sag Hold mode 0 0.5 mV/μs VCCS Bandwidth - 100 - kHz En/disable sequence delay Hold mode 4 TOSC Gate drivers HG transition time Rise time, 5nF load 30 50 μs Fall time 30 50 μs Fall time, diagnostic shutoff 0 200 ns PG transition time Rise time, 5nF load 0 1.5 μs Fall time 0 200 ns |
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