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AS1170 数据表(PDF) 9 Page - OSRAM GmbH |
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AS1170 数据表(HTML) 9 Page - OSRAM GmbH |
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9 / 53 page  AS1170 Electrical characteristics Datasheet • PUBLIC • Document Feedback DS001083 • v2-00 • 2024-Feb-05 9 / 53 / Symbol Parameter Condition Min Typ. Max Unit Current sinks VLED LED forward voltage Two flash LEDs at 1800 mA combined 2.8 3.5 3.95 V Single flash LED at 1600 mA 2.8 4.2 V ILED_OUT LED_OUT1/2 current sinks output combined Dual flash LED current_boost=1 0 2000 mA current_boost=0 0 1800 Single flash LED 1600 mA ILED_OUT LED_OUT1/2 current sink accuracy ILEDOUT>=800 mA or ILEDOUT<500 mA 0 °C < TJ < 100 °C -7 +7 % 500 mA<ILED_OUT<800 mA, 0 °C < TJ < 100 °C -5 +5 % ILED_OUTRAMP LED_OUT1/2 ramp time Ramp-up during startup 250 1000 µs Ramp-down 500 1000 µs ILED_OUTRIPPLE LED_OUT current ripple ILED_OUT = 1000 mA, BW=20 MHz 20 mAPP VILED_COMP LED_OUT current sink voltage compliance Minimum voltage between pin LED_OUT1/2 and GND for operation of the current sink current_boost=0 325 mV current_boost=1 360 VLED_OUTCOMP _HYST Comparators hysteresis Hysteresis for comparators between LED_OUT1 and LED_OUT2 reporting signals led_out1above2 and led_out2above1 30 mV VHIGH_VDS Comparator high VDS Low VDS and high VDS comparator – see Page 17 900 mV VLOW_VDS Comparator low VDS 320 ILEAK_LED_OUT LED_OUT1/2 leakage current Pins LED_OUT1 and LED_OUT2 -1.0 0.0 +1.0 µA Protection and fault detection functions (see Page 18) VVOUTMAX VVOUT overvoltage protection DCDC converter overvoltage protection 5.0 5.3 5.6 V ILIMIT Current limit for coil LDCDC (Pin SW) measured at 40% PWM duty cycle maximum 40000s lifetime operation in overcurrent limit coil_peak=00b 1.8 2.0 2.23 A coil_peak=01b 2.25 2.5 2.78 Default value coil_peak (see Page 24 =10b 2.7 3.0 3.34 coil_peak=11b 3.15 3.5 3.9 |
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