mx881 Clare, Inc., mx881 Datasheet
mx881
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mx881 Summary of contents
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... MX881 Drawing No. 088109 Xenon Flash Controller & LED Torch Driver General Description The MX881 offers a highly integrated Xenon Flash controller, providing an ideal solution for small form factor flash and torch lighting applications. The MX881 integrates a user programmable Controller, IGBT Driver, 100mA LED Torch Driver, and ...
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... LED current regulator. Connect the cathode of the torch LED to this pin. 10 LED Exposed GND Ground Terminal. Pad 8 N/C No Connect. Do not connect to any signal, ground or power source. MX881 Drawing No. 088109 2 C interface, low level enables SPI interface interface. BATT BATT 2 IXYS 2 C output data. www.claremicronix.com ...
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... Recommended Operating Conditions Symbol Parameter VCC Analog and Digital Supply Voltage DVCC Digital I/O Supply Voltage V DC Input Voltage IN V Voltage On SW pad SW T Junction Temperature J MX881 Drawing No. 088109 Rating 0.3 to 7.0 -0.3 to VCC+0.3 -0 -40 to +150 Rating 3 to 5.5 1. DVCC -20 to +115 3 IXYS Unit ...
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... SW Switch on resistance Switch on resistance SW I LED drive current LED I Primary Peak Current PEAK V Output Voltage Trip Point TRIP MX881 Drawing No. 088109 Condition Min 3 1.65 @ 25° 25° C Vsw = 40V 1.65V < DVCC < 2.4V 1.65V < DVCC < 2.4V 0.4 0.15 1.65V < DVCC < 2.4V 2.4V < DVCC < 3.6V 2.4V < DVCC < 3.6V ...
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... LED-OFF Control Register The MX881 control register bit register that allows the user to program the maximum output voltage and the maximum average battery current during the charge cycle. Table1 shows how the bits in the control register are assigned. ABC(2:0) are used to set the average battery current and OVS(1:0) are used to set the output voltage selection reference. Table 1 – ...
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... The 3 bits (ABC2 – ABC0) of the control register are used to program the maximum average battery current during a charge cycle. The MX881 does this by limiting the minimum off time during a switching cycle. The off time compensates for variation of the battery voltage so that the average current is independent of battery voltage ...
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... Average Battery Current Setting of 100mA (ABC = 001) 140 120 100 Average Battery Current Setting of 150mA (ABC = 010) 200 150 100 MX881 Drawing No. 088109 100 200 300 V 100 200 300 V 7 IXYS VCC = 3.0V VCC = 5.5V 400 VCC = 3.0V VCC = 5.5V 400 www ...
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... MX881 Serial Interface The MX881 has a 4 wire serial interface that is capable of operating in two modes: I modes transfer 8 bits of information but only 5 bits are actually used to set the internal control register. Table 3 - Interface Modes ISEL Bus Interface 2 The I C interface (follows the standard bus protocol and timing as defined by Philips). For complete information on this bus, refer to www ...
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... MX881 To write to the MX881 register, the master device will first issue a Start Bit. It will then transmit a 7-bit address. In the MX881, the address is internally set to 0111111b. If the address in the message corresponds to the address of the MX881, the device will issue an acknowledge. The master will send 8 bits of data ...
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... MX881 SCEn SCLK T DS SDATA D7 D6 SCEn SCLK SDATA MX881 SDATA From MX881 Control Register . MX881 Drawing No. 088109 Write Cy cle CYCS Write Cy cle Timing Read Cy cle SCEn ...
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... U1 16 SCEn ISEL 15 SDATA CHARGE 14 SW FLASH 13 SCLK LSEC 12 VFB LED_EN VFB 11 DONE VCC 10 DVCC LED 9 PROG IGBTGATE MX881 16 PIN DFN VCC 11 IXYS D1 BAV23S 1 2 VHV R1 C3 133K, 1% 22uF/350V R2 137K, 1% ISEL CHARGE FLASH R3 1K, 1% VCC LED IGBTGATE C4 .1uF www ...
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... MX881. The fly-back voltage should be equal to the output voltage divided by the turns ratio plus the VCC supply voltage. The fly-back voltage will be greater than this due to the energy stored in the transformer leakage inductance ...
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... The products described in this document are not intended for use in medical implantation or other direct life support applications where malfunction may result in direct physical harm, injury or death to a person. Specification: MX881 ©Copyright 2007, IXYS Corporation All rights reserved. Printed in USA. 13 7/30/07 www ...