ic-wj iC-Haus, ic-wj Datasheet
ic-wj
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ic-wj Summary of contents
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... Adjustable watchdog at the switching input to protect the laser diode Soft-start after power-on Driver shutdown with overtemperature and undervoltage Single 5 V supply Simple circuitry iC-WJ for laser diodes with 50 to 500 µA monitor current iC-WJZ for laser diodes with 0.15 to 1.5 mA monitor current BLOCK DIAGRAM REFERENCE ISET 4 RSET 10 kΩ ...
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... LASER DIODE DRIVER DESCRIPTION The iC-WJ and iC-WJZ devices are driver ICs for laser diodes in continuous and pulsed operation up to 300 kHz. The laser diode is activated via switching input IN. A control to the mean value of the optical laser power and integrated protective functions en- sure nondestructive operation of the sensitive semi- conductor laser ...
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... LASER DIODE DRIVER ABSOLUTE MAXIMUM RATINGS Beyond these values damage may occur; device operation is not guaranteed. Item Symbol Parameter No. G001 VCC Supply Voltage G002 I(CI) Current in CI G003 V(KLD) Voltage at KLD G004 I(KLD) Current in KLD G005 I(AMD) Current in AMD G006 I(IN) Current in IN ...
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... LASER DIODE DRIVER ELECTRICAL CHARACTERISTICS Operating Conditions: VCC = 5 V ±10 %, RSET = 2.7... iC-WJ: I(AMD) = 50...500 µA, iC-WJZ: I(AMD) = 0.15...1.5 mA -25...125 °C, unless otherwise noted. Item Symbol Parameter No. Total Device 001 VCC Permissible Supply Voltage Range 002 Iav(VCC) Supply Current in VCC (average ...
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... LASER DIODE DRIVER ELECTRICAL CHARACTERISTICS Operating Conditions: VCC = 5 V ±10 %, RSET = 2.7... iC-WJ: I(AMD) = 50...500 µA, iC-WJZ: I(AMD) = 0.15...1.5 mA -25...125 °C, unless otherwise noted. Item Symbol Parameter No. 303 RSET Permissible Resistor at ISET (Control Set-up Range) 304 Toff Thermal Shutdown Threshold 305 ...
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... LASER DIODE DRIVER APPLICATIONS INFORMATION Laser Power Adjustment The iC-WJ and iC-WJZ devices can be adapted to CW laser diodes from approximately mW. N- and M-type models can be used. REFERENCE 4 ISET RSET INPUT 6 IN 74HCxx 2 CWD Figure 1: Operation of a laser diode according to the example ...
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... I (AMD) av with Electrical Characteristics No. 301 for V(ISET) and No. 108 (iC-WJZ) for current ratio CR1. Averaging control The control of the average optical laser power requires a capacitor at pin CI. This capacitor is used for aver- aging and must be adjusted to the selected pulse rep- etition frequency and the charging current preset with RSET ...
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... LASER DIODE DRIVER Example CI = 470 nF, RSET = Figure 6 shows a detailed view of the start of laser op- eration; Figure 7 shows the shut-down behavior. The decline in the voltage at CI and the absence of the laser pulses are signs that the undervoltage detector is active. 2.55 V 2.45 V I(KLD) ...
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... LASER DIODE DRIVER time. The watchdog begins to discharge the capacitor CI current limited. The remaining charge time during the pulse pauses before further watchdog intervention is not sufficient to maintain the initial potential at CI. The potential is thus gradually reduced until it reaches the saturation voltage Vs(CI) wd istics No ...
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... The laser power can also be modulated by adapting a current source, e.g. by using an operational amplifier with a current output (OTA). To limit the current at pin DEMO BOARD For the devices iC-WJ/WJZ/WJB a Demo Board is available for test purposes. The following figures show GND ...
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... LASER DIODE DRIVER VCC IN GND RMOD 10 kΩ (15 kΩ ) IMOD CWD CI ... 470 nF AGND Figure 12: Schematic diagram of the Demo Board This specification is for a newly developed product. iC-Haus therefore reserves the right to change or update, without notice, any information contained herein, design and specifi ...
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... For information about prices, terms of delivery, other packaging options etc. please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Package Order Designation SO8 iC-WJ SO8 MSOP8 iC-WJ MSOP8 iC-WJ EVAL WJ1D SO8 iC-WJZ SO8 MSOP8 iC-WJZ MSOP8 iC-WJZ EVAL WJ1D Tel.: +49 (61 35) 92 92-0 Fax: +49 (61 35) 92 92-192 Web: http://www.ichaus.com E-Mail: sales@ichaus ...