LM2756_0712 NSC [National Semiconductor], LM2756_0712 Datasheet
LM2756_0712
Related parts for LM2756_0712
LM2756_0712 Summary of contents
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LM2756 Multi-Display Inductorless LED Driver with 32 Exponential Dimming Steps in micro SMD General Description The LM2756 is a highly integrated, switched-capacitor, multi- display LED driver that can drive LEDs in parallel with a total output current ...
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Connection Diagram Pin Descriptions Bump #s Pin Names TMD20AAA OUT A1, C1, B1, B2 C1+, C1-, C2+, C2- D3, E3,E4, D4 D1A-D4A C4, B4 D53, D62 B3 D1B C3 D1C D2 I SET E1 HWEN ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V pin voltage IN SCL, SDIO, HWEN pin voltages I Pin Voltages Dxx Continuous Power Dissipation (Note 3) Junction ...
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Symbol Parameter I Shutdown Supply Current Pin Voltage SET SET I Output Current to Current Set Ratio DxA-B GroupA, GroupB, GroupC SET f Switching Frequency SW t Start-up Time START V HWEN Voltage Thresholds HWEN ...
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Note 10: The maximum total output current for the LM2756 should be limited to 180mA. The total output current can be split among any of the three Groups ( 30mA Max.). Under maximum output current ...
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Typical Performance Characteristics 3.6V; R LEDxA LEDxB LED1C SET LED Drive Efficiency vs Input Voltage Input Current vs Input Voltage GroupB Diode Current vs Input Voltage www.national.com Unless otherwise specified 11.8kΩ; C ...
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GroupA Current Matching vs Input Voltage 6 LEDs GroupB Current Matching vs Input Voltage 3 LEDs GroupB Diode Current vs GroupB Brightness Code GroupA Current Matching vs Input Voltage 30009716 GroupA Diode Current vs GroupA Brightness Code 30009718 GroupC Diode ...
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Quiescent Current in Gain 1.5× vs Input Voltage www.national.com Shutdown Current vs Input Voltage 30009714 8 30009715 ...
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Circuit Description OVERVIEW The LM2756 is a white LED driver system based upon an adaptive 3/2× - 1× CMOS charge pump capable of supplying up to 180mA of total output current. With three separately controlled Groups of constant current sinks, ...
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SDIO line (HIGH) during the acknowl- edge clock pulse. The LM2756 pulls down the SDIO line during the 9th clock pulse, signifying an acknowledge. The LM2756 generates an acknowledge after each byte is re- ceived. After the ...
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Internal Hex Address: 0xA0 (GroupA), 0xB0 (GroupB), 0xC0 (GroupC) Note: DxA4-DxA0, D53, D62: Sets Brightness for DxA pins (GroupA). 11111=Fullscale DxB2-DxB0: Sets Brightness for DxB pins (GroupB). 111=Fullscale DxC2-DxC0: Sets Brightness for D1C pin. 111 = Fullscale Full-Scale Current set ...
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GroupB and GroupC(D1C) have 8 ana- log current levels. Please refer to the Compatible Interface section of this datasheet for detailed instructions on how to adjust the bright- ness control registers. LED CURRENT ...
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LED current). The efficiency of the LM2756 can be predicted as follow × N × I LEDTOTAL LEDA A (V × N × LEDB B LEDB LEDC × ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted TMD20AAA: 20 Bump 0.4mm micro SMD X1 = 1.615mm X2 = 2.015mm X3 = 0.6mm 14 ...
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Notes 15 www.national.com ...
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