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AS3636 Datasheet(PDF) 5 Page - ams AG |
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AS3636 Datasheet(HTML) 5 Page - ams AG |
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5 / 42 page  www.austriamicrosystems.com Revision 0.7 5 - 42 with additional features with photosensor AS3636 Preliminary Datasheet, Confidential - E l e c t r i c a l C h a r a c t e r i s t i c s fCLK Operating Frequency All internal timings are derived from this oscillator -30ºC - 85ºC -7.5% 2.0 +7.5% MHz TJ=0ºC - 75ºC -5.0% +5.0% AF LED Driver IVLED VLED current source output Adjustable by AF_LED_current, limited to Max_LED_current 10.0 80.0 mA IVLED Δ VLED current source accuracy -7.5 +7.5 % VVLED VLED forward voltage 1.7 3.6 V VVLED_COM P Current Source Compliance VOUTBOOST-VLED current source voltage compliance 200 350 mV Red privacy indicator LED (pin IND) IIND IND current source output adjustable by IND_LED_current VBATINT > 2.7V, indicator LED forward voltage between 1.3V and 2.4V (e.g. use red LED) 216 mA IIND Δ IND current source accuracy -10 +10 % IGBT Driver (pin IGBT_GATE) RIGBT_GATE Output driver series resistance measured at IGBT_fall_speed2zero=50mA, V(IGBT_GATE)=0.8V 17 20 23 Ω all current settings and output voltages 17 20 Ω IIGBT_RISE IGBT_GATE rise current For a IGBT with 10nF gate capacitance results in 0.5V/µs(5mA)...8V/µs(80mA); adjustable by IGBT_rise_and_fall_speed, IGBT_fall_speed2zero, IGBT_fall2zero_slow Driving to VVOUTBOOST (typ. 5.0V, DCDC in voltage feedback mode) 10 80 mA IIGBT_FALL IGBT_GATE fall current 580 mA Protection and Fault Detection Functions VVOUTBOOS TMAX DCDC Boost maximum voltage in current feedback mode 4.75 5.5 V ILIMIT Current Limit for coil LBOOST (Pin SW_B) measured at 50% PWM duty cycle 3 coil_peak_current= 00b -10% 0.25 +10% A 01b 0.3 10b 0.35 11b 0.4 VVLEDSHOR T AF LED short circuit detection voltage Voltage measured on pin VLED 1.2 1.65 V VVLEDOPEN AF LED open circuit detection voltage Voltage measured on pin VLED 4.0 V VINDSHORT Indicator LED short circuit detection voltage Voltage measured on pin IND 0.7 1.2 V IIND_OUT OPEN IND current open detection Detection threshold for open indicator detection on pin IND 45 % of IIND_O UT Digital Interface VIH High Level Input Voltage Pins SDA, SCL, TORCH 1.26 VBAT V VIL Low Level Input Voltage 0.0 0.54 V Table 3. Electrical Characteristics (Continued) Symbol Parameter Condition Min Typ Max Unit |
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