XRP6840EVB Exar Corporation, XRP6840EVB Datasheet
XRP6840EVB
Specifications of XRP6840EVB
Related parts for XRP6840EVB
XRP6840EVB Summary of contents
Page 1
... The XRP6840EVB, Exar’s XRP6840 Evaluation Board, supports either XRP6840B in a 4x4 TQFN package and is fitted by default with the XRP6840A supporting three channels. With 1x, 1.5x and 2x charge pump operating modes, XRP6840EVB can provide a stable drive current for 1.5A, 4W Luxeon Flash LEDs. The evaluation completely assembled ...
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... NC, LED (XRP6840B) FLASH GND 13 CAP OUT 16 18 Thermal Pad - © 2009 Exar Corporation XRP6840B – 2 Channel Version Fig. 2: XRP6840 Pin Assignment Charge pump ground pin. Active high push-pull output. RDY is high when V V voltage. The V for Flash mode is determined by STATUS2 register [B7 ...
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... Jumper to the “VIN” position and connect J7 or place Resistor 0Ω. The I C can be programmed through SCL, SDA jumper J6 XRP6840EVB ETTING TARTED ON 1. Connect VIN and GND to a power supply (VIN range is 2.7V~5.5V). 2. Connect RESET_N to VIN on Jumper J5. 3. Connect Jumper J7 to drive LEDs ...
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... Table 5: Nominal Flash Mode Output Current LEDTORCH Register LEDTORCH register bits B2 summarized in Table 1; they correspond to © 2009 Exar Corporation LED1, LED2 and LED3. Bits B4, B3, B2, and B1 represent the DAC codes D3, D2, D1, D0. They are used to set the torch LED current levels in each channel ...
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... All data taken 2.7V-5.5V, unless otherwise specified. IN Fig. 3: High Efficiency Torch Mode I with PWF4W-001 Fig. 5: 200mA High Efficiency Torch Mode with 0.55F Supercap, CH1=V , CH2=V IN CH4=I =0.5A/div VIN Fig. 7: LED Current Settling Time: 0mA to 100mA. CH1=SDA, CH2=SCL, CH4=I © 2009 Exar Corporation ...
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... Fig. 9: Figure 21: Flash Mode Enable From Shutdown CH1=RESET_N, CH2=RDY, CH3=V © 2009 Exar Corporation Fig. 10: Flash Mode Shutdown. CH1=RESET_N, CH2=RDY, CH3=V OUT 6 OUT Rev. 1.0 ...
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... Soldier Side Lay Out Component XRP6840EVB Evaluation Board 4.8A Supercapacitor Flash LED Driver with I2C Ceramic 22µF 10V X5R Ceramic 10µF 10V X5R Ceramic 0.47µF 10V X5R Super Capacitor 0.6F/5.5V 70mΩ ESR, 20% 1.5A Luxeon Flash LED Green Color Mini LED 2 Pin Header, 2 ...
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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 ...