LTC3831EGN-1#PBF Linear Technology, LTC3831EGN-1#PBF Datasheet
LTC3831EGN-1#PBF
Specifications of LTC3831EGN-1#PBF
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LTC3831EGN-1#PBF Summary of contents
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... PWM oscillator for low output ripple operation. The 300kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to above 500kHz. In shutdown mode, the LTC3831-1 supply current drops to < LTC and LT are registered trademarks of Linear Technology Corporation. V DDQ 1.5V + 220 F 0 ...
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... SHDN SHDN FREQSET Floating CC1 IMAX CC (Note 10 (Notes 6, 10) IMAX ORDER PART TOP VIEW NUMBER LTC3831EGN-1 CC2 MAX 6 11 FREQSET GN PART MARKING 7 10 COMP 38311 PACKAGE 16-LEAD PLASTIC SSOP = 125 C, = 130 – = GND, unless otherwise noted. (Note 2) R MIN ...
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... FET gates. This will vary with the LTC3831-1 operating frequency, operating voltage and the external FETs used. Note 4: The LTC3831EGN-1 is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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LTC3831 TYPICAL PERFOR A CE CHARACTERISTICS Load Regulation 0.762 0.760 REFER TO FRONT PAGE APPLICATION 0.758 NEGATIVE OUTPUT CURRENT INDICATES CURRENT SINKING 0.756 0.754 0.752 0.750 0.748 0.746 0.744 0.742 0.740 0.738 –8 ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Maximum TG Duty Cycle vs Temperature 100 REFER TO FRONT PAGE APPLICATION –50 – 125 50 75 100 ...
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LTC3831 TYPICAL PERFOR A CE CHARACTERISTICS PV Supply Current CC vs Gate Capacitance 12V CC1 CC1 ...
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CTIO S transient response. FREQSET (Pin 11): Frequency Set. Use this pin to adjust the free-running frequency of the internal oscillator. With the pin floating, the oscillator runs at about 300kHz. A resistor from FREQSET ...
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LTC3831-1 TEST CIRCUITS COMP 1. APPLICATIO S I FOR ATIO OVERVIEW The LTC3831 voltage mode feedback, synchronous switching regulator controller (see Block Diagram) de- signed for use in high to medium ...
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U U APPLICATIO S I FOR ATIO comparator from triggering due to noise, the MAX comparator’s response time is deliberately delayed by two to three microseconds. This comparator helps prevent extreme output perturbations with fast output load current transients, while ...
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LTC3831 APPLICATIO S I FOR ATIO actual current limit to be greater than the desired current limit set point. Due to switching noise and variation the actual current limit trip point is not highly DS(ON) ...
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U U APPLICATIO S I FOR ATIO external clock frequency goes higher. The effect of this decrease in ramp amplitude increases the open-loop gain of the controller feedback loop result, the loop crossover frequency increases and it may ...
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LTC3831 APPLICATIO S I FOR ATIO The charge pump capacitors for PV BG pin goes high and the switch node is pulled low by Q2. The BG on time becomes narrow when the LTC3831-1 operates at maximum duty ...
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U U APPLICATIO S I FOR ATIO 4 3. 2.2 F 0.01 F FREQSET SHDN SHDN COMP 33pF 10nF Power MOSFETs Two N-channel power MOSFETs are required for most ...
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LTC3831 APPLICATIO S I FOR ATIO efficiency circuit designed for 1.5V input and 0.75V at 5A output might allow no more than 3% efficiency loss at full load for each MOSFET. Assuming roughly 90% efficiency at this current ...
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U U APPLICATIO S I FOR ATIO time in this application, resulting delay in respond- ing load current step. During this 7 s, the differ- ence between the inductor current and the output ...
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LTC3831 APPLICATIO S I FOR ATIO LTC3831-1 applications. OS-CON electrolytic capacitors from Sanyo and other manufacturers give excellent per- formance and have a very high performance/size ratio for electrolytic capacitors. Surface mount applications can use either electrolytic or ...
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U U APPLICATIO S I FOR ATIO Table 2 shows the suggested compensation component value for 1.5V to 0.75V applications based on the 470 F Sanyo POSCAP 4TPB470M output capacitors. Table 3 shows the suggested compensation component values for 1.5V ...
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LTC3831 APPLICATIO S I FOR ATIO Traces carrying high current should be as wide as pos- sible. For example, a PCB fabricated with 2oz copper requires a minimum trace width of 0.15" to carry ...
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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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... Bus termination Supply for Low Votlage V LTC3831 High Power Synchronous Switching Regulator Controller for DDR Memory Termination LTC3832 High Power Synchronous Switching Regulator Controller trademark of Linear Technology Corporation. SENSE Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 COMMENTS ...