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AS3685B Datasheet(PDF) 6 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
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AS3685B Datasheet(HTML) 6 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
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6 / 25 page  AS3685A/AS3685B Datasheet www.austriamicrosystems.com/ AS3685 (ptr) Revision 2.2 5 - 24 Table 4 – Current Source (Sink) Characteristics Symbol Parameter Min Typ Max Unit Note ITORCH2ISET Torch Current to Bias Current Ratio 1639 A/A AS3685A, EN1=0, EN2=1 (150mA with RISET = 14.2kΩ) 400 mV AS3685A, EN1=1, EN2=1 or AS3685B with ILED>350mA (with RISET = 14.2kΩ) VSWITCH Mode Switching Threshold on V(ILED) between 1:1 -> 1:1.5 and 1:1.5 -> 1:2 150 200 250 mV All lower currents Table 5 –Digital Interface characteristics Symbol Parameter Min Typ Max Unit Note VIH High Level Input voltage 1.5 VBAT V VIL Low Level Input voltage 0.0 0.5 V ILEAKAGE Input pin leakage current -10 10 μA tPULSEWIDTH Pulsewidth for signals on EN1 and EN2 (high or low pulses) 1.0 unlimited μs For Pins EN1 and EN2 Do not leave EN1 and EN2 floating; (47kΩ pulldowns can be used) Table 6 – Protection Functions Symbol Parameter Min Typ Max Unit Note TOVTEMP Overtemperature protection 140 °C TOVTEMPHYST Overtemperature protection Hysteresis 5 °C If the junction temperature exceeds TOVTEMP, the current sink will be disabled and the charge pump switched back into 1:1 mode until the temperature drops below TOVTEMP - TOVTEMPHYST tFLASHTIMEOUT Flash Timeout Time -20% 800 +20% ms AS3685A, EN1=1, EN2=1 or AS3685B flash modes |
Similar Part No. - AS3685B |
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Similar Description - AS3685B |
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