LTC3411EDD Linear Technology, LTC3411EDD Datasheet

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... To further maximize battery life, the P-channel MOSFET is turned on continuously in dropout (100% duty cycle) with a low quiescent current of 60μA. In shutdown, the device draws <1μA. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology Corporation 22μ ...

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... LTC3411IDD#TRPBF LTC3411EMS#PBF LTC3411EMS#TRPBF LTC3411IMS#PBF LTC3411IMS#TRPBF LEAD BASED FINISH TAPE AND REEL LTC3411EDD LTC3411EDD#TR LTC3411IDD LTC3411IDD#TR LTC3411EMS LTC3411EMS#TR LTC3411IMS LTC3411IMS#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: For more information on tape and reel specifi ...

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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER V Operating Voltage Range IN I Feedback Pin Input Current FB V Feedback Voltage FB ΔV Reference Voltage Line Regulation LINEREG ΔV Output Voltage Load Regulation LOADREG g ...

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LTC3411 PIN FUNCTIONS SHDN/R (Pin 1): Combination Shutdown and Timing T Resistor Pin. The oscillator frequency is programmed by connecting a resistor from this pin to ground. Forcing this pin to SV causes the device to be shut down. In ...

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PIN FUNCTIONS PIN NAME DESCRIPTION 1 SHDN/R Shutdown/Timing Resistor T 2 SYNC/MODE Mode Select/Sychronization Pin 3 SGND Signal Ground 4 SW Switch Node 5 PGND Main Power Ground 6 PV Main Power Supply Signal Power Supply IN ...

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LTC3411 TYPICAL PERFORMANCE CHARACTERISTICS Load Regulation 0 3. 2.5V OUT Burst Mode 0.2 OPERATION PULSE SKIP 0.1 0 FORCED CONTINUOUS –0.1 –0.2 –0.3 –0.4 –0 100 1000 LOAD CURRENT (mA) 3411 G07 ...

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BLOCK DIAGRAM 0.8V VOLTAGE REFERENCE + – ERROR AMPLIFIER + 0.74V – + – 0.86V PGOOD 8 SGND LIMIT BCLAMP B – BURST COMPARATOR HYSTERESIS ...

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LTC3411 OPERATION The LTC3411 uses a constant frequency, current mode architecture. The operating frequency is determined by the value of the R resistor or can be synchronized external oscillator. To suit a variety of applications, the selectable ...

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APPLICATIONS INFORMATION A general LTC3411 application circuit is shown in Figure 5. External component selection is driven by the load require- ment, and begins with the selection of the inductor L1. Once L1 is chosen, C and C can be ...

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LTC3411 APPLICATIONS INFORMATION higher ripple current which causes this to occur at lower load currents. This causes a dip in effi ciency in the upper range of low current operation. In Burst Mode operation, lower inductance values will cause the ...

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APPLICATIONS INFORMATION where the maximum average output current I the peak current minus half the peak-to-peak ripple cur- – ΔI rent /2. MAX LIM L This formula has a maximum /2. This ...

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LTC3411 APPLICATIONS INFORMATION Ceramic Input and Output Capacitors Higher value, lower cost ceramic capacitors are now be- coming available in smaller case sizes. These are tempting for switching regulator use because of their very low ESR. Unfortunately, the ESR is ...

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APPLICATIONS INFORMATION Shutdown and Soft-Start The SHDN/R pin is a dual purpose pin that sets the oscil- T lator frequency and provides a means to shut down the LTC3411. This pin can be interfaced with control logic in several ways, ...

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... The output voltage settling behavior is related to the stability TH of the closed-loop system and will demonstrate the actual overall supply performance. For a detailed explanation of optimizing the compensation components, including a review of control loop theory, refer to Linear Technology im- OUT Application Note 76. • ESR, where LOAD . Δ ...

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APPLICATIONS INFORMATION In some applications, a more severe transient can be caused by switching in loads with large (>1uF) input capacitors. The discharged input capacitors are effectively put in paral- lel with C , causing a rapid drop in V ...

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LTC3411 APPLICATIONS INFORMATION To avoid the LTC3411 from exceeding the maximum junc- tion temperature, the user will need to do some thermal analysis. The goal of the thermal analysis is to determine whether the power dissipated exceeds the maximum junction ...

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APPLICATIONS INFORMATION The output voltage can now be programmed by choosing the values of R1 and R2. To maintain high effi ciency, the current in these resistors should be kept small. Choosing 2μA with the 0.8V feedback voltage makes R1~400k. ...

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LTC3411 TYPICAL APPLICATIONS V IN 2.63V TO C1 5.5V 22μF PGND RS1 RS2 1M R3 13k SGND SGND NOTE: IN DROPOUT, THE OUTPUT TRACKS THE INPUT VOLTAGE C1, C2: TAIYO YUDEN JMK325BJ226MM L1: TOKO A914BYW-2R2M (D52LC ...

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TYPICAL APPLICATIONS V IN 2.63V TO 5V 100k PGOOD R1 280k R3 13k 887k 1000pF 10pF C1, C2: TAIYO YUDEN JMK325BJ226MM C4: SANYO POSCAP 6TPA47M D1: ON MBRM120L Single Inductor, Positive, Buck-Boost Converter C1 22μ ...

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LTC3411 TYPICAL APPLICATIONS 4.7μH LTC3402 SHDN V OUT + 2 CELLS MODE/SYNC FB PGOOD 10μF R GND T 49.9k C1: TAIYO YUDEN JMK212BJ106MG 0 = FIXED FREQ ...

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TYPICAL APPLICATION V IN 2.63V + TO 4. 1μF 33μF C7 15k 47pF C3 470pF C1, C2: AVX TPSB336K006R0600 C4, C5: TAIYO YUDEN LMK212BJ105MG L1: COILCRAFT DO1606T-102 2mm Height, 2MHz, Li-Ion to 1.8V Converter R5 100k PV PGOOD ...

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LTC3411 PACKAGE DESCRIPTION 3.50 0.05 1.65 0.05 2.15 0.05 (2 SIDES) 0.25 0.05 0.50 BSC 2.38 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2). CHECK ...

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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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... LTC3430 60V, 2.75A (I ) 200kHz High Effi ciency Step-Down DC/DC Converter OUT LTC3440 600mA (I ) 2MHz Synchronous Buck-Boost DC/DC Converter OUT 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 ● www.linear.com ● ...