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ISL97674IRZ Datasheet(PDF) 2 Page - Intersil Corporation |
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ISL97674IRZ Datasheet(HTML) 2 Page - Intersil Corporation |
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2 / 28 page  ISL97674 2 FN7634.0 June 25, 2010 Block Diagram FIGURE 2. ISL97674 BLOCK DIAGRAM 45V*, 25mA per string 78 (6x13) LEDs REF GEN GM AMP COMP + - + - CH0 CH5 VIN = 4.5V~26.5V Logic FET Drivers OVP REG LX ISL97674 OSC & RAMP Comp Σ=0 Imax ILIMIT PLL Fault/Status Register Highest VF String Detect VDC Temp Sensor Fault/Status Register EN/PWM PGND RSET + - GND VIN REG Fault/Status Register O/P Short REF_OVP REF_VSC Bias + - DAC0 PWM0 Controls 10uH/3A 4.7uF/50V CH1 pe Open Ckt, Short Ckt Detects DAC1 PWM1 Controls DAC5 PWM5 Controls PWM Ctrl Ckt 0 1 DAC5 DAC1 DAC0 Fault/Status Control OVP 5 PWM5 PWM1 PWM0 VSET Boost SW fsw Segmentation Slew Rate Ctrl Phase Shift Controller PLLC VSYNC FAULT SCL SDA I2C Control * Vin > 6V 40mA *VIN > 12V |
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