LM3553SDEV National Semiconductor, LM3553SDEV Datasheet
LM3553SDEV
Specifications of LM3553SDEV
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LM3553SDEV Summary of contents
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... GPIO and a hard- ware RESET pin. The LM3553 is available in National's 3mm by 3mm LLP12 package. Typical Application Circuits © 2008 National Semiconductor Corporation Features ■ Accurate and Programmable LED Current up to 1.2A in 128 Steps ■ ...
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Connection Diagram Pin Descriptions Pin Name V Input Voltage. Input range: 2.7V to 5.5V Switch Pin 6 OVP Over Voltage Protection Pin 2, 11 D1, D2 Regulated current sink inputs DAP GND Ground I 1 Current ...
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... Maximum Lead Temperature (Soldering) ESD Rating(Note 5) Human Body Model ESD Caution Notice National Semiconductor recommends that all integrated circuits be handled with appropriate ESD precautions. Failure to observe proper ESD handling techniques can result in damage to the device. Electrical Characteristics Limits in standard typeface are for T A ≤ ...
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... T =120ºC (typ.). J Note 4: For detailed soldering specifications and information, please refer to National Semiconductor Application Note: AN-1187 for Recommended Soldering Profiles. Note 5: The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. (MIL-STD-883 3015.7) Note 6: In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated ...
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Note 8: Min and Max limits are guaranteed by design, test, or statistical analysis. Typical (Typ) numbers are not guaranteed, but do represent the most likely norm. Unless otherwise specified, conditions for Typ specifications are: V Note 9: All testing ...
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Typical Performance Characteristics R = 16.5kΩ 10µ 10µF;L = 2.2µH; VFB bit = CL bit = '0'; OVP bit = '0' for 1 LED and VFB = '1' for two series SET IN OUT LEDs;. Maximum ...
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Input Current and LED Efficiency with 1.2A Flash Current Input Current and LED Efficiency with 600mA Flash Current through 2 Series LEDs LED Efficiency LED @ 1.2A and 2 LEDs @ 600mA Input Current and LED ...
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Block Diagram Circuit Description CIRCUIT COMPONENTS F Pin EN The flash enable pin provides an external method (non for starting the flash pulse. When F '1', the flash current level defined through the I2C ...
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Connection Diagram Typical System Configuration Compatible Interface DATA VALIDITY The data on SDA line must be stable during the HIGH period of the clock signal (SCL). In other words, the state of the data line can only ...
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COMPATIBLE CHIP ADDRESS The chip address for LM3553 is 1010011, or 53hex. FIGURE 4. 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 8. TC6-TC0: Sets Torch current level for D1 and D2. xxx1 1111 = Fullscale Flash Current Control Register FIGURE 9. FC6-FC0: Sets Flash current level for D1 and D2. x111 1111 = Fullscale Current Level ...
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... For more detailed instructions on mounting LLP packages, please refer 20171425 to National Semiconductor Application Note AN-1187. The high switching frequencies and large peak currents make the PCB layout a critical part of the design. The proceeding ...
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Connect the inductor and the anode of D1(schottky) as close together as possible and place this connection as close as possible to the SW pin. This reduces the inductance and resistance of the switching node which minimizes ringing and ...
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LM3553 CONFIGURATIONS www.national.com 2 LEDs @ 600mA with Battery Input 1 LED @ 1.2A with Battery Input 14 20171415 20171437 ...
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LEDs @ 1.2A with +5V Input Voltage Mode @ 700mA with Battery Input 15 20171439 20171438 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted NS Package SDF12A 16 ...
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Notes 17 www.national.com ...
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