LTC3717EUH-1 Linear Technology, LTC3717EUH-1 Datasheet
LTC3717EUH-1
Specifications of LTC3717EUH-1
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LTC3717EUH-1 Summary of contents
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... Wide supply range allows operation from 4V to 36V at the V input LTC and LT are registered trademarks of Linear Technology Corporation trademark of Linear Technology Corporation. SENSE QDR RAMs and Quad Data Rate RAMs comprise a new family of products developed by Cypress Semiconductor, Hitachi, IDT, Micron Technology, Inc ...
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... Minimum Current Sense Threshold SENSE(MIN) V – V (Sink) PGND PACKAGE/ORDER I FOR ATIO + 0.3V) to – 0.3V CC ORDER PART NUMBER LTC3717EUH-1 Consult LTC Marketing for parts specified with wider operating temperature ranges. The denotes specifications which apply over the full operating = 15V, unless otherwise noted CONDITIONS ) RUN/ ...
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... P as follows: D LTC3717EUH- • Note 3: The LTC3717EUH-1 is tested in a feedback loop that adjusts V achieve a specified error amplifier output voltage (I The denotes specifications which apply over the full operating = 15V, unless otherwise noted CONDITIONS RUN/SS Pin Rising RUN/SS Pin Falling ...
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LTC3717 TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Load Current 100 1.25V OUT FIGURE 1 CIRCUIT 0 0.01 0 LOAD CURRENT ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS On-Time vs I Current ON 10k VON 1k 100 100 I CURRENT ( A) ON 37171 G09 RUN/SS Latchoff Thresholds vs Temperature 5.0 4.5 LATCHOFF ENABLE 4.0 ...
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LTC3717 CTIO S V (Pin 1): On-Time Voltage Input. Voltage trip point for ON the on-time comparator. Tying this pin to the output voltage makes the on-time proportional to V comparator input defaults to 0.7V ...
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CTIO S BOOST (Pin 28): Boosted Floating Driver Supply. The (+) terminal of the bootstrap capacitor C pin swings from a diode voltage drop below INTV V + INTV . ...
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LTC3717-1 U OPERATIO Main Control Loop The LTC3717 current mode controller for DC/DC step-down converters. In normal operation, the top MOSFET is turned on for a fixed interval determined by a one-shot timer OST. When the top MOSFET ...
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U U APPLICATIO S I FOR ATIO A typical LTC3717-1 application circuit is shown in Figure 1. External component selection is primarily de- termined by the maximum load current and begins with the selection of the sense resistance and power ...
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LTC3717 APPLICATIO S I FOR ATIO 2.0 1.5 1.0 0 – JUNCTION TEMPERATURE ( C) Figure 2. R vs. Temperature DS(ON) V OUT D TOP – OUT D BOT ...
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U U APPLICATIO S I FOR ATIO R VON1 30k V OUT R VON2 100k (3a) Figure 3. Adjusting Frequency Shift with Load Current Changes 25% of the voltage change at the I TH shown in ...
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LTC3717 APPLICATIO S I FOR ATIO based on only 2000 hours of life which makes it advisable to derate the capacitor. The selection primarily determined by the ESR OUT required to minimize voltage ripple and ...
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U U APPLICATIO S I FOR ATIO 250ns. The minimum off-time limit imposes a maximum duty cycle the maximum duty ON ON OFF(MIN) cycle is reached, due to a dropping input voltage for ...
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... MOSFET gates unless an external EXTV In continuous mode operation, this current is I f(Q g(TOP) estimated from the equations given in Note 2 of the Electrical Characteristics. For example, the LTC3717EUH-1 is limited to less than 14mA from a 30V supply (14mA)(30V)(34 C/ For larger currents, consider using an external supply with ...
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U U APPLICATIO S I FOR ATIO what is limiting the efficiency and which change would produce the most improvement. Although all dissipative elements in the circuit produce losses, four main sources account for most of the losses in LTC3717-1 ...
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LTC3717 APPLICATIO S I FOR ATIO Tying V to 1.1V will set the current sense voltage range RNG for a nominal value of 110mV with current limit occurring at 143mV. To check if the current limit is acceptable, ...
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U U APPLICATIO S I FOR ATIO • The ground plane layer should not have any traces and it should be as close as possible to the layer with power MOSFETs. • Place MOSFETs, D1 and ...
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LTC3717-1 U TYPICAL APPLICATIO 0 100k 11k 39k 680pF C 20k C C2 100pF C 0. REF 6.3V 510k ...
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... MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.20mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 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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... Step-Up Regulator LTC3413 Monolithic DDR Memory Termination Regulator LTC3717 Wide Operating Range for DDR Memory Termination Burst Mode is a registered trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 Typical Application 1.25V 1.4MHz ...