LT3486EDHC#PBF Linear Technology, LT3486EDHC#PBF Datasheet
LT3486EDHC#PBF
Specifications of LT3486EDHC#PBF
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LT3486EDHC#PBF Summary of contents
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... TSSOP packages. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. L2 2.2µF ...
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... PLASTIC DFN EXPOSED PAD (PIN 17) IS GND MUST BE SOLDERED TO PCB T = 125°C, θ = 43°C/W, θ JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3486EDHC#PBF LT3486EDHC#TRPBF LT3486EFE#PBF LT3486EFE#TRPBF LT3486IFE#PBF LT3486IFE#TRPBF LEAD BASED FINISH TAPE AND REEL LT3486EDHC LT3486EDHC#TR LT3486EFE ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are 3V, unless otherwise noted. SHDN PARAMETER Minimum Operating Voltage Maximum Operating Voltage Feedback Voltage (FB1, FB2) Offset between FB1 and FB2 Feedback Pin Bias Current (FB1, FB2) Quiescent Current ...
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LT3486 TYPICAL PERFORMANCE CHARACTERISTICS Switching Waveforms V SW2 50V/DIV I L2 500mA/DIV V SW1 10V/DIV I L1 1A/DIV V = 3.6V 0.5µs/DIV IN 8 LEDs/25mA 2 LEDs/320mA CIRCUIT OF FRONT PAGE APPLICATION LED Current vs PWM Duty Cycle Wide Dimming ...
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TYPICAL PERFORMANCE CHARACTERISTICS Input Current with Output 1 and Output 2 Open Circuit 25° 63. (V) ...
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LT3486 PIN FUNCTIONS SW1, SW2 (Pins 1, 16): The SW Pins are the Collectors of the Internal Power Transistors. Connect the inductors and Schottky diodes to these pins. Minimize trace area at these pins to minimize EMI. V (Pin 2): ...
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BLOCK DIAGRAM SW1 1 OVP1 3 OVERVOLT CONVERTER1 DETECTION OV1 PWM Q1 LOGIC EN1 + OSC R SNS1 – PWM COMP + A2 – OV1 EN1 CONVERTER1 80k CONTROL 8 7 PWM1 CTRL1 ...
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LT3486 OPERATION Main Control Loop The LT3486 uses a constant frequency, current mode control scheme to provide excellent line and load regulation. It incorporates two identical, but fully independent PWM converters. Operation can be best understood by referring to the ...
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OPERATION output open circuit are shown in the Typical Performance Characteristics graphs. Figure 3a shows the transient response of switcher 1 with the LEDs disconnected from the output. When the LED1 string is disconnected from the output, the voltage at ...
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LT3486 APPLICATIONS INFORMATION Duty Cycle The duty cycle for a step-up converter is given by – V OUT – V OUT D CESAT where Output voltage OUT V ...
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APPLICATIONS INFORMATION 8/8 LEDs 63. 39. LED CURRENT (mA) Figure 6b. Efficiency Comparison for Different R Inductor ...
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LT3486 APPLICATIONS INFORMATION The average forward current in normal operation is equal to the output current, and the peak current is equal to the peak inductor current. A Schottky diode rated suf- ficient for most LT3486 applications. ...
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APPLICATIONS INFORMATION The LED current can be set by: I ≈ (200mV/R ), when V LED FB CTRL I ≈ • when V LED CTRL FB CTRL Feedback voltage variation versus control voltage is given in ...
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LT3486 APPLICATIONS INFORMATION the figure. A PWM logic input is applied to the gate of the NMOS and the PWM pin of the LT3486. When the PWM input is taken high, the LEDs are connected to the R resistor and ...
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TYPICAL APPLICATIONS Li-Ion Cell Powered Driver for Camera Flash and LCD Backlighting LED1 AOT3218 320mA 5V OFF ON 0V 100k 0. 10µ OUT1 10µH 10µH 2.2µF SW1 V SW2 ...
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LT3486 TYPICAL APPLICATIONS 8 LEDs 25mA 5V PWM1 100Hz 100k 8.06 LED Current and Efficiency vs PWM Duty Cycle 3.6V IN 8/8 LEDs 80 75 EFFICIENCY 70 65 LED CURRENT ...
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TYPICAL APPLICATIONS 16 LEDs 25mA PWM FREQ 200Hz 100k LED Current and Efficiency vs PWM Duty Cycle 16/16 LEDs 80 75 EFFICIENCY 70 65 LED CURRENT PWM DUTY ...
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LT3486 PACKAGE DESCRIPTION 1.65 ±0.05 3.50 ±0.05 (2 SIDES) 2.20 ±0.05 0.25 ± 0.05 0.50 BSC 4.40 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION (WJED-1) IN JEDEC PACKAGE ...
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... Updated FE package drawing 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LT3486 PAGE NUMBER ...
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... I < 1µ 2.8V to 4.5V, IN < 1µA, QFN-24 Package SD : 2.7V to 16V 34V, IN OUT(MAX) < 1µA, ThinSOT Package SD : 2.7V to 24V 40V, IN OUT(MAX) < 16µA, DFN Package SD LT 0111 REV E • PRINTED IN USA LINEAR TECHNOLOGY CORPORA TION 2008 120 100 100 3486fe ...