LTC1872BES6 LINER [Linear Technology], LTC1872BES6 Datasheet
LTC1872BES6
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LTC1872BES6 Summary of contents
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FEATURES TM Burst Mode Operation Disabled for Lower Output Ripple at Light Loads High Efficiency: Over 90% High Output Currents Easily Achieved Wide V Range: 2. Limited Only by External Components OUT Constant Frequency 550kHz Operation ...
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... Note 6: Guaranteed by design at duty cycle = 30%. Peak current sense voltage is V and power increases due to slope compensation as shown in Figure INFORMATION ORDER PART NUMBER TOP VIEW LTC1872BES6 6 NGATE – SENSE S6 PART MARKING S6 PACKAGE 6-LEAD PLASTIC SOT-23 LTXY = 150 C, ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Reference Voltage vs Temperature 825 V = 4.2V IN 820 815 810 805 800 795 790 785 780 775 –55 –35 – 105 125 TEMPERATURE ( C) 1872B G01 Maximum ...
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LTC1872B U U FUNCTIONAL DIAGRA – V SENSE 15mV OSC FREQ FOLDBACK GND 2 U OPERATIO (Refer to Functional Diagram) Main Control Loop The LTC1872B is a constant frequency current mode switching regulator. During normal operation, ...
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U OPERATIO (Refer to Functional Diagram) Figure 2 illustrates this result for the circuit of Figure 1 using both an LTC1872 in Burst Mode operation and an LTC1872B (non-Burst Mode operation output current of 50mA, the Burst Mode ...
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LTC1872B U OPERATIO (Refer to Functional Diagram) Short-Circuit Protection Since the power switch in a boost converter is not in series with the power path from input to load, turning off the switch provides no protection from a short-circuit at ...
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U U APPLICATIONS INFORMATION This implies a minimum inductance of OUT D L MIN OUT f R SENSE A smaller value than L could be used in the circuit; MIN however, the ...
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LTC1872B U U APPLICATIONS INFORMATION OUT D RIPPLE V I OUT ESR 2 fC OUT where f is the operating frequency, C capacitance and I is the ripple current in the induc- ...
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U U APPLICATIONS INFORMATION Efficiency Considerations The efficiency of a switching regulator is equal to the output power divided by the input power times 100 often useful to analyze individual losses to determine what is limiting the efficiency ...
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LTC1872B U U APPLICATIONS INFORMATION R ITH C ITH BOLD LINES INDICATE HIGH CURRENT PATHS Figure 6. LTC1872B Layout Diagram (See PC Board Layout Checklist) U TYPICAL APPLICATIO CELLS 2. 10k ...
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U TYPICAL APPLICATIO S 10k 220pF C1: TAIYO YUDEN CERAMIC EMK325BJ106MNT C2: AVX TPSE476M016R0150 D1: IR10BQ015 PACKAGE DESCRIPTION SOT-23 SOT-23 (Original) (ThinSOT) .90 – 1.45 1.00 MAX A (.035 – .057) (.039 MAX) .00 – 0.15 .01 – .10 A1 ...
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LTC1872B U TYPICAL APPLICATIO S 0.1 F CERAMIC V IN –2.5V LTC1872B 2.7V to 9.8V Input to 3.3V/1.2A Output SEPIC Converter C C1 220pF R 80.6k RELATED PARTS PART NUMBER DESCRIPTION LT1304 Micropower DC/DC Converter with Low-Battery Detector LT1610 1.7MHz, ...