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SC5014 Datasheet(PDF) 4 Page - Semtech Corporation |
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SC5014 Datasheet(HTML) 4 Page - Semtech Corporation |
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4 / 34 page  SC5014 4 Parameter Symbol Conditions Min Typ Max Units Boost Oscillator Frequency F SW R FSET = 00kΩ 0.85 .5 MHz Boost Oscillator Frequency F OSC R FSET Varies 0.2 2.2 MHz Maximum Duty Cycle D MAX 88 92 % Control Signals: EN, PWMI, SDA, SCL High Voltage Threshold V IH V CC = 4.5V to 5.5V 2. V Low Voltage Threshold V IL V CC = 4.5V to 5.5V 0.8 V SDA Output Low V SDA(L) -6mA from V CC to SDA 0.3 V Pin Leakage Current I LEAK V EN = 0V, VPWMI = VISET = VFSET = VSDA = VSCL = 5.0V - µA PWM Dimming Input PWMI Input Dimming Frequency F PWMI 00 30k Hz PWMI Input Resolution 00Hz < F PWMI < 0kHz 0 bits 0kHz < F PWMI < 20kHz 9 bits Over-Voltage Protection OVP Trip Threshold Voltage V OVP(TRIG) OVP Rising . .2 .3 V OVP Hysteresis V OVP(HYS) OVP Falling 0 mV OVP Leakage Current I OVP(LEAK) OVP = 5V 0. µA Current Sink (IO1 to IO4) IOx Dimming Minimum Pulse Width T PWM(MIN) F PWM(LED) = 00Hz - 30kHz 300 ns ISET pin Voltage V ISET .23 V Regulation Voltage V IOn(REG) Voltage of Regulating String 0.9 V Current Sink Disable Threshold V IOn(DIS) Checked at Power-up 0.6 V Current Sink Rise/Fall Time () t RISE/FALL R ising Edge from 0% to 90% of I O(n) 25 ns LED Current Accuracy I On(ACC%) PWMI = 00%, T A=+25 °C 98 00 02 mA LED Current Matching (2) I On(MATCH) PWMI = 00%, T A=+25 °C ±.0 % PWMI = 00%, T A=-40 °C, +85 °C ±2.0 % I On Off Leakage Current I On(LEAK) PWMI = 0V, EN = 0V, V IO = 25V 0. µA IO Switching Frequency F PWM(IO) FAST_FREQ = 0 0 kHz FAST_FREQ = (Default Setting) 20 Phase Delay Time Between IO Pins (IO to IO4) t PD FAST_FREQ = (Default Setting) t PD = (/4)*(/FPWM(IO)), 4 Strings On 2.5 µs PWM Output Resolution F PWM(IO) = 0kHz 0 bits F PWM(IO) = 20kHz 9 Electrical Characteristics (continued) |
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Similar Description - SC5014 |
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