LP3933SLX National Semiconductor, LP3933SLX Datasheet
LP3933SLX
Specifications of LP3933SLX
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LP3933SLX Summary of contents
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... LED types and for efficiency optimization. All functions are software controllable through a SPI interface and 19 internal registers. Typical Application © 2004 National Semiconductor Corporation Features n High Efficiency Programmable 300 mA Magnetic Boost DC-DC converter n 2 separately controlled PWM RGB LED drivers with ...
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... NSC internal codes for die manufacturing and assembly traceability. Both will vary considerably. Ordering Information Order Number Package Marking LP3933SL LP3933SLX www.national.com See NS Package Number SLE32A 20080509 Package Mark — TOP VIEW ...
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Pin Description Pin # Name Type 1 FB Input 2 GND_BOOST Ground 3 SW Output 4 V Power DD2 5 GND2 Ground 6 CLED1 Output 7 CLED2 Output 8 GND_WLED Ground 9 WLED1 Output 10 WLED2 Output 11 WLED3 Output ...
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... Note 7: For detailed soldering specifications and information, please refer to National Semiconductor Application Note 1125: Laminate CSP/FBGA. Note 8: The Human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each pin ...
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Electrical Characteristics Note 9: In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated. Maximum ambient temperature (T A-MAX dissipation of the device in the application (P D-MAX ...
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Modes of Operation RESET: In the RESET mode all the internal registers are reset to the default values (Boost output register 3Fh (5.0V), all other registers 00h). Reset is entered always if input NRST is LOW or internal Power On ...
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Logic Interface Characteristics (1.8V ≤ V ≤ DD_IO DD1,2 Symbol Parameter LOGIC INPUTS SS, SI, SCK, PWM_LED V Input Low Level IL V Input High Level IH I Logic Input Current I f Clock Frequency SCK LOGIC INPUT ...
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SPI Interface (Continued) SPI Timing Parameters 2.775V DD1,2 DD_IO Symbol Note: Data guaranteed by design. Magnetic Boost DC/DC Converter The LP3933 boost DC/DC Converter ...
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Magnetic Boost DC/DC Converter Magnetic Boost DC/DC Converter Electrical Characteristics Symbol Parameter I Load Current LOAD V Output Voltage FB Accuracy (FB Pin) Voltage at FB Pin (Boost Converter Output Voltage) RDS Switch ON Resistance ON f PWM Mode Switching ...
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Boost Output Voltage Control User can control the boost output voltage by boost output 8-bit register. Boost [7:0] BOOST Output Voltage Register 0Dh Bin Hex 0000 0000 00 0000 0001 01 0000 0011 03 0000 0111 07 0000 1111 0F ...
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Boost Converter Typical Performance Characteristics otherwise stated. (Continued) Battery Current vs Voltage Boost Typical Waveforms at 100 mA Load Boost Line Regulation Battery Current vs Voltage 20080520 Boost Startup with No Load 20080514 Boost Load Regulation, 50 mA–100 mA 20080517 ...
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Dual RGB LED Driver The RGB driver has six outputs that can independently drive 2 separate RGB LEDs or six LEDs of any kind. User has control over the following parameters separately for each LED: • ON and OFF (start ...
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RGB Driver Electrical Characteristics (R1, G1, B1, R2, G2, B2 outputs) Symbol Parameter R ON Resistance DS-ON I Off State Leakage Current LEAKAGE I Maximum Sink Current MAX T Maximum Slope Period SMAX T Minimum Slope Period SMIN T Slope ...
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RGB LED PWM Control RSW1 Enable for R1 switch GSW1 Enable for G1 switch BSW1 Enable for B1 switch RSW2 Enable for R2 switch GSW2 Enable for G2 switch BSW2 Enable for B2 switch RGB_START Master Switch for both RGB ...
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WLED and CLED Driver Electrical Characteristics Symbol Parameter I Sink Current Range RANGE I Maximum Sink Current MAX I Leakage Current LEAKAGE I 1–4 Sink Current Matching (Note MATCH 17) Note 16: A minimum voltage, Dropout Voltage, is required on ...
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Recommended External Components Symbol Symbol Explanation C V Bypass Capacitor VDD1 DD1 C V Bypass Capacitor VDD2 DD2 C Output Capacitor from FB to GND OUT C Input Capacitor from Battery Voltage to GND Bypass Capacitor VDDIO ...
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Control Registers Control registers and register bits are shown in the following table. ADDR REGISTER D7 00H RGB Control register1 rgb pwm 01H red1_on_off r1_on[3] 02H green1_on_off g1_on[3] 03H blue1_on_off b1_on[3] 04H r1slope, r1duty r1slope[3] 05H g1slope, g1duty g1slope[3] g1slope[2] ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...