LTC3611EWP LINER [Linear Technology], LTC3611EWP Datasheet
LTC3611EWP
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LTC3611EWP Summary of contents
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FEATURES n 10A Output Current n Wide V Range = 4.5V to 32V (36V Maximum Internal N-Channel MOSFETs n True Current Mode Control n Optimized for High Step-Down Ratios n t ≤ 100ns 0N(MIN) n Extremely Fast Transient ...
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... LTC3611IWP#TRPBF LEAD BASED FINISH TAPE AND REEL LTC3611EWP LTC3611EWP#TR LTC3611IWP LTC3611IWP#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 Main Control Loop V Operating Input Voltage Range IN I Input DC Supply Current Q Normal Shutdown Supply Current V Feedback Reference Voltage FB LTC3611E LTC3611I ΔV Feedback ...
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LTC3611 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER Internal V Regulator CC V Internal V Voltage INTVCC CC ΔV Internal V Load Regulation LDO(LOADREG EXTV Switchover Voltage EXTVCC CC ΔV EXTV Switch Drop ...
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TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current 100 DISCONTINUOUS 90 80 CONTINUOUS 12V 2.5V OUT EXTV = 5V CC FIGURE 6 CIRCUIT 50 0.01 0.1 1 LOAD CURRENT (A) 3611 G04 Frequency vs ...
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LTC3611 TYPICAL PERFORMANCE CHARACTERISTICS On-Time vs Temperature 300 I = 30μA ION VON 250 200 150 100 50 0 –50 – 100 TEMPERATURE (°C) 3611 G13 Maximum Valley Current Limit vs Temperature 20 ...
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TYPICAL PERFORMANCE CHARACTERISTICS Input and Shutdown Currents vs Input Voltage 1400 EXTV OPEN 1200 CC 1000 800 SHUTDOWN 600 400 EXTV = 5V CC 200 INPUT VOLTAGE (V) 3611 G20 EXTV Switch Resistance ...
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LTC3611 PIN FUNCTIONS PGND (Pins 56, 57, 58, 59, 60, 61, 62, 63, 64, 65): Power Ground. Connect this pin closely to the (–) terminal of C and the (–) terminal of C VCC SW (Pins 4, ...
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FUNCTIONAL DIAGRAM 0.7V 2.4V V VON t = (10pF ION S 20k + + I CMP – – 1.4V V RNG 37 × 0.7V 1 ...
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LTC3611 OPERATION Main Control Loop The LTC3611 is a high efficiency monolithic synchronous, step-down DC/DC converter utilizing a constant on-time, current mode architecture. It operates from an input voltage range of 4.5V to 32V and provides a regulated output voltage ...
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APPLICATIONS INFORMATION The basic LTC3611 application circuit is shown on the front page of this data sheet. External component selection is primarily determined by the maximum load current. The LTC3611 uses the on-resistance of the synchronous power MOSFET for determining ...
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LTC3611 APPLICATIONS INFORMATION 1000 V = 3.3V OUT V = 1.5V V OUT OUT 100 100 1000 R (kΩ) ON Figure 1a. Switching Frequency vs R 1000 V = 12V OUT V OUT V = 3.3V OUT 100 100 1000 ...
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APPLICATIONS INFORMATION R VON1 30k V OUT C VON R VON2 0.01μF 100k (2a) R VON1 3k V OUT C R VON VON2 0.01μF 10k 10k INTV 2N5087 C C (2b) Figure ...
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LTC3611 APPLICATIONS INFORMATION Since ΔI increases with input voltage, the output ripple L is highest at maximum input voltage. Typically, once the ESR requirement is satisfied, the capacitance is adequate for filtering and has the necessary RMS current rating. Multiple ...
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APPLICATIONS INFORMATION PGND IN4148 V OUT2 + C SEC 1μF V OUT1 T1 + 1:N C OUT Figure 4. Secondary Output Loop and EXTV RMS and must be bypassed to ground with a minimum of ...
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LTC3611 APPLICATIONS INFORMATION 0.9V. As the RUN/SS voltage rises to 3V, the clamp raised until its full 2.4V range is available. This takes an additional 1.3s/μF, during which the load current is folded back until the output ...
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APPLICATIONS INFORMATION 4. C loss. The input capacitor has the difficult job of filtering IN the large RMS input current to the regulator. It must have a very low ESR to minimize the AC I capacitance to prevent the RMS ...
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LTC3611 APPLICATIONS INFORMATION PGND PGND 2 PGND 3 PGND V OUT 4 2. 10A OUT1 1μH 6 22μF 100μF SW 6.3V ×2 ...
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APPLICATIONS INFORMATION OUT OUT VCC ...
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LTC3611 TYPICAL APPLICATIONS PGND PGND 2 PGND 3 PGND V OUT 4 1. 10A OUT1 0.47μH 22μF 100μ 6.3V ×2 ...
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TYPICAL APPLICATIONS PGND PGND 2 PGND 3 PGND V OUT 4 1. 10A OUT1 0.47μH 22μF 100μ 6.3V ×2 7 ...
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LTC3611 TYPICAL APPLICATIONS PGND PGND 2 PGND 3 PGND V OUT 4 1. 10A OUT 0.68μH 6 22μF 100μF SW 6.3V ×2 ...
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PACKAGE DESCRIPTION 9.00 BSC PAD 1 CORNER aaa C 2x TOP VIEW 3.30 1.39 0.50 0.30 – 0.50 PIN 1 0.87 3.50 1.17 2.98 3.60 4.53 1.30 1.81 2.30 2.04 3.99 3.85 1.42 RECOMMENDED SOLDER PAD LAYOUT TOP VIEW Information ...
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LTC3611 TYPICAL APPLICATION PGND PGND 2 PGND 3 PGND V OUT 4 12V OUT 4.7μH 6 22μF 180μF SW 25V ...