LTC1707IS8 Linear Technology, LTC1707IS8 Datasheet
LTC1707IS8
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LTC1707IS8 Summary of contents
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... Low output voltages down to 0.8V are easily achieved due to the 0.8V internal reference. The LTC1707 comes in an 8-lead SO package. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation OUT + 3 ...
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... Note 3: The LTC1707 is tested in a feedback loop that servos V balance point for the error amplifier (V and power Note 4: Dynamic supply current is higher due to the gate charge being A delivered at the switching frequency ORDER PART NUMBER 8 V LTC1707CS8 REF 7 SYNC/MODE LTC1707IS8 PART MARKING 1707 = 120 C/ W 1707I JA MIN TYP MAX UNITS ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Input Voltage 100 100mA LOAD I = 300mA LOAD 10mA LOAD 2.5V OUT Burst Mode OPERATION 75 ...
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LTC1707 W U TYPICAL PERFOR A CE CHARACTERISTICS Maximum Output Current vs Input Voltage 1000 V = 1.8V OUT 800 V = 1.5V OUT 600 OUT 400 V = 3.3V OUT V = 2.5V OUT V = ...
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CTIO S I (Pin 1): Error Amplifier Compensation Point. The TH current comparator threshold increases with this control voltage. Nominal voltage range for this pin 1.2V. RUN/SS (Pin 2): Combination of Soft-Start ...
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LTC1707 U OPERATIO (Refer to Functional Diagram) Main Control Loop The LTC1707 uses a constant frequency, current mode step-down architecture. Both the main (P-channel MOSFET) and synchronous (N-channel MOSFET) switches are internal. During normal operation, the internal top power MOSFET ...
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U OPERATIO Frequency synchronization is inhibited when the feedback voltage V is below 0.6V. This prevents the external clock FB from interfering with the frequency foldback for short- circuit protection. Dropout Operation When the input supply voltage decreases toward the ...
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LTC1707 U U APPLICATIO S I FOR ATIO with the oscillator synchronized at its minimum frequency, i.e clock just above the oscillator free-running frequency. The actual reduction in average current is less than for peak current. The basic ...
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U U APPLICATIO S I FOR ATIO size or height requirements in the design. Always consult the manufacturer if there is any question. The selection driven by the required effective series OUT resistance (ESR). Typically, once the ...
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LTC1707 U U APPLICATIO S I FOR ATIO D1 in Figure 5 reduces the start delay but allows C ramp up slowly providing the soft-start function. This diode can be deleted if soft-start is not needed. Efficiency Considerations The efficiency ...
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U U APPLICATIO S I FOR ATIO A second, more severe transient is caused by switching in loads with large (>1 F) supply bypass capacitors. The discharged bypass capacitors are effectively put in parallel with C , causing a rapid ...
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LTC1707 U U APPLICATIO S I FOR ATIO Design Example As a design example, assume the LTC1707 is used in a single lithium-ion battery-powered cellular phone applica- tion. The V will be operating from a maximum of 4.2V IN down ...
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U TYPICAL APPLICATIO S C ITH 47pF C SS 0.1 F Double Lithium-Ion Battery to 5V/0.5A Low Dropout Regulator C ITH 47pF Input to 3.3V/0.6A Regulator * SUMIDA CD54-150 AVX ...
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LTC1707 U TYPICAL APPLICATIO S C ITH 47pF SUMIDA CD54-100 ** TAIYO YUDEN LMK325BJ106K-T † AVX TPSC107M006R0150 C ITH 47pF 3.3V Input to 2.5V/0.4A Regulator ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 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. ...
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... Constant Off-Time 500mA, 1MHz Operation, OUT V from 2.5V to 5.5V IN 16-Pin SO and SSOP 36V, Fault Protection IN 550kHz, 6-Pin SOT-23 5A, OUT V from 2.2V to 10V IN 550kHz, MS8 10V OUT 550kHz, MS8 6V 600mA IN Q OUT 1707f LT/TP 0600 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1999 to 600mA ...