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STLA02 Datasheet(PDF) 7 Page - STMicroelectronics |
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STLA02 Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 23 page STLA02 Electrical characteristics Doc ID 010005 Rev 1 7/23 5 Electrical characteristics VEN = VIN = 3 V TA = - 40 °C to 85 °C unless otherwise specified. Typical values are at TA = 25 °C, unless otherwise specified. Table 7. Electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit VIN Input operating supply voltage 2.5 18 V IS Supply current VEN = VIN, VOUT = 24 V, VFB = 23 V 2 4 mA VEN = GND 10 µA IO Output current adjustment VIN = 2.5 V to 18 V, RFB = 10 Ω 20 mA VOUT Regulated voltage range VIN = 2.5 V to 18 V VIN+1 27 V IPEAK Inductor peak current VIN = 2.5 V 300 400 550 mA VFB Feedback voltage (VOUT - VFB) VEN = VIN, RFB = 10 Ω 190 200 210 mV IFB FB bias current VEN = VIN, VOUT = 24 V, VFB = 24 V 6 µA ILX(leak) N-MOS leakage current VEN = 0, VLX = VOUT = 24 V 0.1 µA ΔI O Output current tolerance VIN = 3 V, IOUT = 0.2 V / RFB -5 5 % fs Switching frequency VIN = 2.5 V, TA = 25 °C 1.7 2 2.3 MHz DMAX Maximum duty cycle VEN = VIN, VOUT = 24 V, VFB = 24 V 88 92 % RDSon-N Internal N-channel RDSon ILX = 20 mA 0.8 Ω ν Efficiency of the chip itself VIN = 10 V, IO = 20 mA, VO = 6 x VFLED_max + VRSENSE = 24 V (1) 85 % ν Efficiency of the whole application VIN = 10 V, IO = 20 mA, VO = 6 x VFLED_max + VRSENSE = 24 V (1) 83 % OVP Output overvoltage protection VIN = 3 V, no load 28 V TSHDN Thermal shutdown 130 150 °C THYS Thermal shutdown hysteresis 15 °C VIL Low and high level input logic signal on EN pin VIN = 2.5 V to 18 V, VENMAX = 12 V 01.5 V VIH 1.8 VIN TEN LED current rise time ILED = 0 to ILED = 20 mA VIN = 9 V, VEN = 0 V to 3 V 6 LEDs in series (1) 0.2 ms TRESPONSE LED current rise time ILED = 0 mA to ILED = 20 mA VIN = 9 V, VEN = 0 V to 3 V, 6 LEDs in series (1), VOUT precharged 60 µs 1. Guaranteed by design, but not tested in production. |
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