LT3215 Linear Technology, LT3215 Datasheet
LT3215
Related parts for LT3215
LT3215 Summary of contents
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... LED current at very low I switching optimizes efficiency by monitoring the voltage across the LED current source and switching modes only when I LED a low profile 3mm × 3mm 10-Lead DFN package. , LTC and LT are registered trademarks of Linear Technology Corporation. *Protected by U.S. Patent 6411531. – LED1 C CPO 4.7µ ...
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LTC3215 ABSOLUTE AXI U RATI GS (Note GND ............................................... –0.3V to 5.5V IN CPO to GND ............................................. –0.3V to 5.5V EN ................................................... –0. (Note 2) ........................................... 1000mA CPO ILED ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER I SET V ISET I ISET Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Based on long-term current ...
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LTC3215 W U TYPICAL PERFOR A CE CHARACTERISTICS Input Shutdown Current vs Input Voltage 4.0 3 25° 85° –40°C A 2.0 1.5 1.0 0.5 0 2.9 3.1 3.5 3.7 3.9 ...
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CTIO – – (Pins 10): Charge Pump Flying Capacitor Pins. A 2.2µF X5R or X7R ceramic capacitor should be connected from C1 ...
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LTC3215 U OPERATIO The LTC3215 uses a fractional switched capacitor charge pump to power a high current LED with a programmed regulated current. The part starts up into the 1x mode. In this mode directly connected to CPO. ...
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U OPERATIO – 3215 F01 Figure 1. Charge Pump Open-Loop Thevenin-Equivalent Circuit R is dependent on a number of factors including OL the oscillator frequency, flying capacitor values and switch resistances. From ...
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LTC3215 U U APPLICATIO S I FOR ATIO V , CPO Capacitor Selection IN The value and type of capacitors used with the LTC3215 determine several important parameters such as regulator control loop stability, output ripple, charge pump strength and ...
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U U APPLICATIO S I FOR ATIO compare the amount of achievable capacitance for a given case size rather than comparing the specified capacitance value. For example, over rated voltage and temperature conditions, a 1µF, 10V, Y5V ceramic capacitor in ...
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LTC3215 U U APPLICATIO S I FOR ATIO Power Efficiency To calculate the power efficiency (η white LED driver chip, the LED power should be compared to the input power. The difference between these two numbers repre- sents ...
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... TOP MARK (SEE NOTE 6) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights Package 10-Lead Plastic DFN (3mm × ...
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... I = 25µA/50µA, I OUT(MAX 5.25V 28µA, I <1µA OUT(MAX 2.7V to 4.5V 2.5mA, I IN(MAX 40V 1.2mA, I < 1µA OUT(MAX 40V 2µA, I < 1µA OUT(MAX LT/TP 0305 1K • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 <1µA < 6µA SD 3215f ...