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HGQFN28 Datasheet(PDF) 11 Page - Roithner LaserTechnik GmbH |
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HGQFN28 Datasheet(HTML) 11 Page - Roithner LaserTechnik GmbH |
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11 / 20 page  iC-HG 3 A LASER SWITCH Rev B2, Page 11/20 THERMAL SHUTDOWN iC-HG is protected by an integrated thermal shutdown feature. When the shutdown temperature is reached all channels are disabled. Falling temperature after this shutdown will unconditionally enable all channels again. Necessary precaution to prevent damage of the laser may be to also disable any external control cir- cuits for the laser output power or current control dur- ing thermal shutdown. The error signal at pin NER can be used to e.g. disable the control circuit. APPLICATION EXAMPLES 10μF AGND5 10nF CI & 100nF Power & CI LDK6 CLDA1 CVDD3 CVDD2 10nF + 100μF CVDD3 CI6 EN5 AGND6 EN6 10K CVDD2 ..12V ELVDS CI3 EN3 EN4 40% 100 & EN1 AGND1 EN2 CI VDD AGND3 LDK3 60% AGND2 iC-HG CVDD1 NER & CLDA3 100nF LDK4 80% LDK1 10μF GND LDK2 100nF 10nF CLDA1 10μF 100μF 3..5.5V 20% CI1 - 10nF CLDA2 LDK5 AGND4 NERROR CI4 Monitor RNER 10nF CI5 10nF 10K & RNER RLVDS CLDA3 100nF Temperature CLDA4 CLDA4 CVDD1 RLVDS EN-LVDS 10μF CLDA2 VDD 100 EN+LVDS CI2 Figure 9: 1 channel LVDS fast |
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