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LT3003 数据表(PDF) 7 Page - Linear Technology |
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LT3003 数据表(HTML) 7 Page - Linear Technology |
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7 / 20 page ![]() LT3517 7 3517ff BLOCK DIAGRAM 1V CTRL 1.01V 1V 1V 9μA VIN – + – + + + A1 X10 RSENSE ISP ISN PVIN PWM LED ARRAY A3 A2 SS + – – + A4 – + – + A5 – + A7 2V 3517 F01 A6 S MAIN SWITCH DRIVER ERROR AMPLIFIER CURRENT SENSE AMPLIFIER PWM COMPARATOR R Q1 POWER SWITCH Q TG VISP VISP – 7V MOSFET DRIVER TGEN CFILT SW GND CIN SHDN FB VC SYNC SS RT VIN FREQ ADJUST A8 VREF RAMP GENERATOR 2.5MHz TO 250kHz OSCILLATOR + 100μA VIN Q2 Figure 1. Buck Mode LED Driver |
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