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NZQFN28 Datasheet(PDF) 1 Page - Roithner LaserTechnik GmbH |
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NZQFN28 Datasheet(HTML) 1 Page - Roithner LaserTechnik GmbH |
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1 / 20 page  iC-NZ FAIL-SAFE LASER DIODE DRIVER Rev B2, Page 1/20 FEATURES o Peak value controlled three level laser switch for operation from CW up to 155 MHz o Spike-free switching of laser currents of ca. 100 mA per channel (320 mA total) from 3.5 to 5 V supply voltage o Single-failure-proof o System-enable with self test o Separate setting of laser power for each channel via external resistors o Strong suppression of transients with very small external capacitors o Adjustable laser current monitor o Safety shutdown with overcurrent, overtemperature and undervoltage o Autonomous safety circuit for a second photo diode monitoring the laser power o All current LD types can be used (M/P/N configurations) o Error signal output at shutdown APPLICATIONS o Pulsed LD modules for safety applications o Distance measurement PACKAGES QFN28 5 mm x 5 mm BLOCK DIAGRAM RSMD VSL Laser Driver LD MD VSH + − − SMD(0) SMD(1) + Safety Monitor Diode FSM REGEN SDIS Current Monitor TEMPOK VREF RSI RML LDKM NSEN Monitor EN Safety Diode VBG and Reference VBG and Reference RSI +5 V VDD ENCAL NERR NSF NSEN NPDR NTREN LDAOK RSIOV AGND LDKH CIL LDKL CIH CIM MDL RMDM RMDH RMM RMH CIL CIM CIH LDA LENH LENM LENL RGND MDOK CIOK LDKGND MD LD N MD LD P suitable laser diode configurations LD MD M SMD GND LDKH RVDD Copyright © 2007 iC-Haus http://www.ichaus.com |
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