LM3553SDEV National Semiconductor, LM3553SDEV Datasheet
LM3553SDEV
Specifications of LM3553SDEV
Related parts for LM3553SDEV
LM3553SDEV Summary of contents
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... CIN 10µF, 6.3V COUT 4.7µF, 25V L1 2.2µH RSET 33kΩ D1 1.5A, 30V RSDA, RSCL, 10kΩ RFEN, RMF, RTX © 2008 National Semiconductor Corporation National Semiconductor Application Note 1780 March 12, 2008 Package Manufacturer SDF12A National LLP12 -- National -- Philips Lumiled ...
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Schematic LM3553 Evaluation Board Layout www.national.com FIGURE 1. Top Layer 2 30049606 30049602 ...
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Board Operation BASIC CONNECTIONS To operate the LM3553 1.2A Dual Flash LED Driver System with I2C Compatible Interface, connect a supply voltage (2.7V-5.5V) between board connectors VIN and GND and at- tach interface using one of ...
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EXTERNAL CONTROL INTERFACE CONNECTION The LM3553 Evaluation Board provides two ways to connect compatible interface to the LM3553 IC. The first method to connect ...
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COMPATIBLE CHIP ADDRESS The chip address for LM3553 is 1010011, or 53hex. FIGURE 8. INTERNAL REGISTERS OF LM3553 Register Internal Hex Address General Purpose Register 0x10 Multi-Function Pin Control 0x20 Register Current Step Time 0x50 Register Torch ...
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Torch Current Control Register FIGURE 12. TC6-TC0: Sets Torch current level for D1 and D2. xxx1 1111 = Full-scale Flash Current Control Register FIGURE 13. FC6-FC0: Sets Flash current level for D1 and D2. x111 1111 = Full-scale Current Level ...
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Safety Timer Terminated Pulse 30049618 TX Terminated Pulse 7 30049619 www.national.com ...
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Software Interface Information In order to fully evaluate the LM3553 part, an “I interface must be used for any functionality to occur. A de- tailed description of the interface control is described in the LM3553 datasheet. National has created an ...
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VFB: Toggles the Feedback voltage between 450mV (default) and 350mV. When pressed, the feedback voltage will be set to 350mV • Volt Mode: Places the LM3553 into voltage output mode. When depressed, the part will output 4.98V. • EN1 ...
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