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LP3933 Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LP3933 Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 18 page Pin Description Pin # Name Type Description 1 FB Input Boost Converter Feedback 2 GND_BOOST Ground Power Switch Ground 3 SW Output Open Drain, Boost Converter Power Switch 4V DD2 Power Supply Voltage for Internal Digital Circuits 5 GND2 Ground Ground Return for V DD2 (Internal Digital) 6 CLED1 Output Open Drain, CLED1 Output 7 CLED2 Output Open Drain, CLED2 Output 8 GND_WLED Ground Ground for WLED and CLED Drivers 9 WLED1 Output Open Drain, White LED1 Output 10 WLED2 Output Open Drain, White LED2 Output 11 WLED3 Output Open Drain, White LED3 Output 12 WLED4 Output Open Drain, White LED4 Output 13 RT Input Oscillator Resistor 14 V DD1 Power Supply Voltage for Internal Analog Circuits 15 GND1 Ground Ground 16 V REF Output Internal Reference Bypass Capacitor 17 GND3 Ground Ground 18 NRST Logic Input Low Active Reset Input 19 SS Logic Input SPI Slave Select 20 SO Logic Output SPI Serial Data Output 21 SI Logic Input SPI Serial Data Input 22 SCK Logic Input SPI Clock 23 PWM_LED Logic Input LED Control for On/Off or Dimming Control 24 V DD_IO Power Supply Voltage for Logic IO Signals 25 GND4 Ground Ground 26 B2 Output Open Drain Output, Blue LED 2 27 G2 Output Open Drain Output, Green LED 2 28 R2 Output Open Drain Output, Red LED 2 29 GND_RGB Ground RGB Driver Ground 30 R1 Output Open Drain Output, Red LED 1 31 G1 Output Open Drain Output, Green LED 1 32 B1 Output Open Drain Output, Blue LED 1 www.national.com 3 |
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