XRP6840EVB Exar Corporation, XRP6840EVB Datasheet
XRP6840EVB
Specifications of XRP6840EVB
Related parts for XRP6840EVB
XRP6840EVB Summary of contents
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... The XRP6840 is available in a lead-free, “green”/halogen free 20-pin TQFN package. TYPICAL APPLICATION DIAGRAM Exar Corporation 48720 Kato Road, Fremont CA 94538, USA ...
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... Torch Mode Input Current Standby Input Current Shutdown Supply Current Shutdown I Current LED Torch Mode Incremental current Step Flash Mode Incremental current Step Maximum Current in Torch Mode per Channel Maximum Current in Flash Mode Output Current DAC Resolution DAC Current Accuracy © 2009 Exar Corporation ...
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... Input Logic Low Voltage SDA, SCL, RESET_N, FLASH Input Logic High Voltage Turn-Off Time (T ) Into OFF Shutdown Flash Time Duration Before Standby SPECIFICATIONS DDRESSING ORMAT XRP6840 R/W Address S A 7-bit 1/0 Start Condition Acknowledgement sent by the slave © 2009 Exar Corporation Min. ...
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... Note 4: Guaranteed by design. Note total capacitance of one bus line in pF. tR and tF measured between 0 Note 6: I ≤6mA. Cb =total capacitance of one bus line in pF. t SINK Note 7: Input filters on the SDA and SCL inputs suppress noise spikes less than 50ns. © 2009 Exar Corporation ...
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... BLOCK DIAGRAM PIN ASSIGNEMENT XRP6840A – 3 Channel Version © 2009 Exar Corporation Fig. 3: XRP6840 Block Diagram (XRP6840A Shown) XRP6840B – 2 Channel Version Fig. 4: XRP6840 Pin Assignment 5/ Rev. 1.0.0 ...
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... A XRP6840BILB-F -40°C≤T ≤+125°C A XRP6840BILBTR-F -40°C≤T ≤+125°C A XRP6840 Evaluation Board – XRP6840A based. XRP6840EVB “YY” = Year – “WW” = Work Week – “X” = Lot Number © 2009 Exar Corporation ...
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... T IN Information section of this datasheet. Fig. 5: High Efficiency Torch Mode I no supercap Fig. 7: High Efficiency Torch Mode, Input Current versus 200mA, no supercap LED 1100mA Fig. 9: In-rush Current with Li-ion Battery 0.6F Supercap, C =10µF CH1 = V IN © 2009 Exar Corporation ...
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... Fig. 11: 0.11s Flash Duration with 0.55F Supercap at 4.3A, LED V < 3.8V, CH1 = FLASH, CH2 = RDY, CH3 =V F CH4 = I =2A/div LED Fig. 13: 200mA High Efficiency Torch Mode with 0.55F Supercap, CH1=V , CH2=V IN CH4=I =0.5A/div VIN Fig. 15: LED Current Settling Time: 0mA to 100mA. CH1=SDA, CH2=SCL, CH4=I © 2009 Exar Corporation ...
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... Fig. 17: LED Current Settling Time: 200mA to 0mA. CH1=SDA, CH2=SCL, CH4=I Fig. 19: LED Current Settling Time From Shutdown to 200mA. CH1=RESET_N, CH2=LEDx, CH4=I Fig. 21: Figure 21: Flash Mode Enable From Shutdown CH1=RESET_N, CH2=RDY, CH3=V © 2009 Exar Corporation Fig. 18: LED Current Settling Time 200mA to Shutdown. ...
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... Torch Mode Torch Mode Auto Gain Flash Mode Flash Mode 1 0 1.5X Flash Mode Flash Mode Table 2: STATUS1 Register Operation Modes © 2009 Exar Corporation STATUS1 Register Bit B5 This bit is used to save or reset the contents of STATUS1, LEDTORCH registers for the next I when RESET_N, pin 6, is ‘ ...
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... Table 6: Torch Mode Output Current © 2009 Exar Corporation Addressing and Writing Data To write data to the XRP6840 one of the following two sequences is required: Easy shutdown/startup sequence XRP6840B [Slave Address with write bit][Data for Status] I /Ch ...
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... However, in High Efficiency Torch mode, it will only turn on again when V below the drop out voltage of approximately 0.36V. Once the charge pump turns on again, it will then monitor both V voltages. This operation will be explained © 2009 Exar Corporation ...
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... This is why Auto Start Mode is recommended because it charges the output capacitor the fastest. Even though the maximum programmed, the 5 stage internal control algorithm on the previous page will still override the programmed gain to ensure optimum operation and © 2009 Exar Corporation ...
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... If an LED fails short, that channel will be disabled. The short condition is asserted when less than 200mV. OUT LEDX driver of the shorted LED will be turned off and no current will flow. However, the other channels will continue to operate as intended, independently of the shorted channel. © 2009 Exar Corporation ...
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... To achieve 4.3A flash pulses, we recommend using 0.55F Super Capacitor EDLC2720-501-2F-50 with voltage rating of TYPICAL APPLICATION SCHEMATICS Fig. 22: XRP6840A - 3 Channel - 4.3A Total LED Flash Current © 2009 Exar Corporation 5.5V and 50mΩ of ESR, or the 0.6F HS206F from TDK Super Capacitor from CAP-XX with a voltage rating of 5.5V and 80mΩ ...
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... PACKAGE SPECIFICATION 20-P TQFN IN © 2009 Exar Corporation 16/ Rev. 1.0 ...
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... While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized ...