LT3592EDDB#PBF Linear Technology, LT3592EDDB#PBF Datasheet

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... PWM architecture provides fast transient response and cycle-by-cycle current limiting. Thermal shutdown provides additional protection. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Effi ciency for 2 Red LEDs 10μH, 900kHz 0.1μ ...

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... PLASTIC DFN θ = 76°C/W, θ = 13.5°C EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3592EDDB#PBF LT3592EDDB#TRPBF LT3592IDDB#PBF LT3592IDDB#TRPBF LT3592EMSE#PBF LT3592EMSE#TRPBF LT3592IMSE#PBF LT3592IMSE#TRPBF LEAD BASED FINISH TAPE AND REEL LT3592EDDB ...

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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Minimum Input Voltage Input Quiescent Current in Shutdown CAP to OUT Voltage DA Pin Current to Stop OSC Switching Frequency Maximum Duty Cycle SHDN Input High Voltage SHDN Input ...

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LT3592 TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency (2 Red LEDS 10μH, 900kHz) 100 95 90 BRIGHT (500mA INPUT VOLTAGE (V) 3592 G01 Effi ...

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TYPICAL PERFORMANCE CHARACTERISTICS Undervoltage Lockout vs Temperature 3.4 3.3 3.2 3.1 – 100 TEMPERATURE (°C) 3592 G10 Frequency Foldback 2500 R = 48.7k T 2000 1500 1000 500 0 600 800 1000 1200 1400 1600 1800 2000 SHDN ...

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LT3592 TYPICAL PERFORMANCE CHARACTERISTICS BRIGHT OUT 210 205 200 195 190 OUT Boost Diode Voltage vs Current 1.0 0.9 0.8 0.7 0.6 0.5 0 100 DIODE CURRENT (mA ...

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PIN FUNCTIONS R (Pin 1): Programs the frequency of the internal oscillator. T Connect a resistor from R to ground. Refer to Table the Typical Performance Characteristics for resistor values that result in desired oscillator frequencies. BRIGHT ...

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LT3592 BLOCK DIAGRAM BRIGHT BRAKE 2 CAP + 8 R SENSE OUT – – LED1 – 1.21V LED2 BATT C2C R 10R ...

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OPERATION The LT3592 is a constant frequency, current mode step- down LED driver. An internal oscillator that is programmed by a resistor from the R pin to ground enables fl ip-fl op, turning on the internal 1.25A ...

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LT3592 APPLICATIONS INFORMATION Oscillator The frequency of operation is programmed by an external resistor from R to ground. Table 1 shows R T commonly used oscillator frequencies, and refer to the Typi- cal Performance Characteristics curve for other values. Table ...

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APPLICATIONS INFORMATION (~0.4V at maximum load). This leads to a minimum input voltage of OUT D V – IN(MIN MAX with DC = 0.90. MAX The maximum input voltage is ...

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... Low inductance may result in discontinuous mode operation, which is acceptable, but further reduces maximum load current. For details of the maximum output current and discontinuous mode operation, see Linear Technology Application Note 44. Catch Diode Depending on load current, a 500mA to 1A Schottky di- ode is recommended for the catch diode, D1 ...

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APPLICATIONS INFORMATION at the LT3592 and to force this very high frequency switch- ing current into a tight local loop, minimizing EMI. A 1μF capacitor is capable of this task, but only placed close to the LT3592 ...

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LT3592 APPLICATIONS INFORMATION Figure 4. Transient Load Response of the LT3592 with Different Output Capacitors OPTIONAL BOOST C3 CAP LT3592 SW V BATT IN GND DA (5a) BOOST Pin Considerations The capacitor C3 and an internal Schottky diode from the ...

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APPLICATIONS INFORMATION The minimum operating voltage of an LT3592 application is limited by the undervoltage lockout (UVLO, ~3.25V) and by the maximum duty cycle as outlined above. For proper startup, the minimum input voltage is also limited by the boost ...

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LT3592 APPLICATIONS INFORMATION LT3592 SHDN RUN GND RUN 15k LT3592 SHDN 0.1μF GND Figure 7. To Soft-Start the LT3592, Add a Resistor and Capacitor to the SHDN Pin Shorted and Open LED Protection In case of a shorted LED string ...

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APPLICATIONS INFORMATION V IN Figure 8. Circuit to Address Reversed Input and Backpowering Issues CLOSING SWITCH SIMULATES HOT PLUG LOW STRAY IMPEDANCE INDUCTANCE ENERGIZED DUE TO 6 FEET 32V SUPPLY (2 METERS) OF TWISTED PAIR + + ...

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... LT3592 circuits. However, these capaci- tors can cause problems if the LT3592 is plugged into a live supply (see Linear Technology Application Note 88 for a complete discussion). The low loss ceramic capacitor combined with stray inductance in series with the power ...

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APPLICATIONS INFORMATION two poles in the loop. Rc provides a zero. With the recom- mended output capacitor, the loop crossover occurs above the R C zero. This simple model works well as long as the C C value of the ...

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... FB pin. Other Linear Technology Publications Application Notes AN19, AN35, and AN44 contain more detailed descriptions and design information for Step-down regulators and other switching regulators ...

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TYPICAL APPLICATIONS Single Red LED Driver with Boost Diode to V BEAD 32V 10nF 8V TO 32V Due to Low V IN 1N4148 BOOST 16V 1μF 0.1μF LT3592 SW MBRA120 ...

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LT3592 PACKAGE DESCRIPTION 0.64 ±0.05 (2 SIDES) 0.70 ±0.05 2.55 ±0.05 1.15 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 2.39 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING CONFORMS TO VERSION (WECD-1) IN JEDEC PACKAGE ...

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... LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 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. ...

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... Step-Down LED Driver LT3591 Constant Current, 1MHz, High Effi ciency White LED Boost Regulator with Integrated Schottky Diode and 80:1 True Color PWM Dimming ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 24 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...