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STCF03ITBR bảng dữ liệu(PDF) 11 Page - STMicroelectronics |
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STCF03ITBR bảng dữ liệu(HTML) 11 Page - STMicroelectronics |
11 / 33 page Electrical characteristics STCF03I 11/33 6 Electrical characteristics Table 6. Electrical characteristics (TJ = 25°C, VI = 3.6 V, 2xCI = 10 µF, CO = 1 µF, L = 4.7 µH, RFL = 0.27 Ω, RTR = 1.8 Ω, RX = 15 KΩ, Typ. values @25°C, unless otherwise specified). Symbol Parameter Test condition Min. Typ. Max. Unit VI Input operation supply voltage 2.7 5.5 V VPW_ON RESET Power ON reset threshold VI rising 2.3 V IO Output current adjustment range IFLASH FLASH MODE for VI = 3.3 V to 5.5 V 60 800 mA FLASH MODE for VI = 2.7 V to 3.3 V 60 600 Output current adjustment range ITORCH Torch mode VI = 2.7 V to 5.5 V 15 200 Auxiliary LED output current adjustment range IAUXLED Ready mode, VI = 3.3 V to 5.5 V 0 20 VO Regulated voltage range 2.5 5.3 V FB1 Feedback voltage Torch mode 30 250 mV FB2 Feedback voltage Flash mode 30 250 mV ΔIO Output current tolerance Flash mode, IO = 160 mV/RFL -10 10 % RON_ FB1-FB2 ON resistance Torch mode, IO = 200 mA 90 m Ω IQ Quiescent current in SHUTDOWN mode 1µA Quiescent current in Ready -mode 1.8 mA fs Frequency VI = 2.7 V 1.8 MHz ν Efficiency of the chip itself VI = 3.2 to 4.2 V, Flash Mode, IO = 800 mA 87 % Efficiency of the whole application VI = 3.2 to 4.2 V, Flash Mode, IO = 800 mA, VO=VfLED_max + VFB2 = 5.02 V See the typical application schematic It is included losses of inductor and sensing resistor 76 OVP Output over voltage protection VI = 5.5 V, No Load 5.5 V OVHYST Over voltage hysteresis VI = 5.5 V, No Load 0.3 V OTP Over temperature protection VI = 5.5 V 140 °C OTHYST Over temperature hysteresis VI = 5.5 V 20 °C RONT1 RX-NTC switch On resistance Ready mode 25 Ω NTCLEAK RX-NTC switch OFF leakage Shutdown mode, VNTC = 2 V VRX = GND 1µA |
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