LT3491EDC#PBF Linear Technology, LT3491EDC#PBF Datasheet
LT3491EDC#PBF
Specifications of LT3491EDC#PBF
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LT3491EDC#PBF Summary of contents
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... Schottky diode are all contained inside the tiny SC70 and 2mm × 2mm DFN packages. With such a high level of integration, the LT3491 provides a high efficiency LED driver solution in the smallest of spaces. , LTC, LT and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners ...
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LT3491 ABSOLUTE AXI U RATI GS Input Voltage (V ) ................................................. 12V IN SW Voltage ............................................................. 32V CAP Voltage ............................................................ 32V CTRL Voltage .......................................................... 12V U PACKAGE/ORDER I FOR ATIO TOP VIEW ...
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ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime TYPICAL PERFOR A ...
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LT3491 W U TYPICAL PERFOR A CE CHARACTERISTICS Quiescent Current (V = 3V) CTRL 3.0 2.5 2.0 1.5 1.0 0 (V) IN 3491 G09 Open-Circuit Output Clamp Voltage vs Temperature ...
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CTIO S (SC70/DFN) SW (Pin 1/Pin 3): Switch Pin. Minimize trace area at this pin to minimize EMI. Connect the inductor at this pin. GND (Pins 2, 3, 4/Pin 2): Ground Pins. All three pins ...
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LT3491 U OPERATIO The LT3491 uses a constant frequency, current mode control scheme to provide excellent line and load regula- tion. Operation can be best understood by referring to the Block Diagram in Figure 1. At power up, the capacitor ...
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U U APPLICATIO S I FOR ATIO INDUCTOR SELECTION A 10µH inductor is recommended for most LT3491 appli- cations. Although small size and high efficiency are major concerns, the inductor should have low core losses at 2.3MHz and low DCR ...
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LT3491 U U APPLICATIO S I FOR ATIO For low DCR inductors, which is usually the case for this application, the peak inrush current can be simplified as follows: α π ⎛ ⎞ V – ...
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U U APPLICATIO S I FOR ATIO Using a Filtered PWM Signal A filtered PWM signal can be used to control the bright- ness of the LED string. The PWM signal is filtered (Figure network and ...
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LT3491 U U APPLICATIO S I FOR ATIO The time it takes for the LED current to reach its pro- grammed value sets the achievable dimming range for a given PWM frequency. For example, the settling time of the LED ...
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U U APPLICATIO S I FOR ATIO LOW INPUT VOLTAGE APPLICATIONS The LT3491 can be used in low input voltage applications. The input supply voltage to the LT3491 must be 2.5V or higher. However, the inductor can be run off ...
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LT3491 U TYPICAL APPLICATIO S Li-Ion Driver for One White LED C2 1µF LED LT3491 10µ GND 1µF C1: TAIYO YUDEN LMK212BJ105MD C2: TAIYO YUDEN GMK316BJ105ML L1: MURATA LQH32CN100 Li-Ion ...
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U TYPICAL APPLICATIO S 12V to One White LED at 200mA PV IN 12V R SENSE C3 1Ω 1µF CAP LT3491 1µF SHUTDOWN AND CTRL DIMMING CONTROL GND C1, C3: TAIYO YUDEN LMK212BJ105MD C2: ...
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LT3491 U TYPICAL APPLICATIO S Li-Ion Driver for Three White LEDs SHUTDOWN AND DIMMING CONTROL CTRL CAP LT3491 10µH SW LED C1 1µF GND C1: TAIYO YUDEN LMK212BJ105MD C2: TAIYO YUDEN GMK316BJ105ML ...
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... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 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. U ...
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... Dual Full Function, 2MHz Diodes White LED Step-Up Converter with Built-In Schottkys LT3486 Dual 1.3A White LED Converter with 1000:1 True Color PWM Dimming ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...