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LTC3108IDE 数据表(PDF) 5 Page - Linear Technology |
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LTC3108IDE 数据表(HTML) 5 Page - Linear Technology |
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5 / 20 page  LTC3108 5 3108p LDO Load Regulation TYPICAL PERFORMANCE CHARACTERISTICS Resonant Switching Waveforms Start-Up Voltage Sequencing VOUT and PGD Response During a Step Load VOUT Ripple LDO Step Load Response Enable Input and VOUT2 Running on Storage Capacitor TA = 25°C, unless otherwise noted. LDO Dropout Voltage LDO LOAD (mA) 0 –1.00 –0.75 –0.50 0.5 1 1.5 2 3 2.5 3.5 –0.25 0.00 4 3108 G10 LDO LOAD (mA) 0 0.00 0.04 0.08 0.12 0.5 1 1.5 2 3 2.5 3.5 0.16 0.20 0.02 0.06 0.10 0.14 0.18 4 3108 G11 10μs/DIV C1 PIN 2V/DIV C2 PIN 2V/DIV SW PIN 50mV/DIV 3108 G09 VIN = 20mV 1:100 RATIO TRANSFORMER 10sec/DIV 3108 G12 CH1 VSTORE 1V/DIV CH2, VOUT 1V/DIV CH3, VLDO 1V/DIV VIN = 50mV 1:100 RATIO TRANSFORMER COUT = 220μF CSTORE = 470μF CLDO = 2.2μF 5ms/DIV 3108 G13 CH2 VOUT 1V/DIV CH1 PGD 1V/DIV 50mA LOAD STEP COUT = 220μF 100ms/DIV 3108 G14 20mV/ DIV 30μA LOAD COUT = 220μF 1ms/DIV 3108 G16 CH2, VOUT2 1V/DIV CH1 VOUT2_EN 1V/DIV 10mA LOAD ON VOUT2 COUT = 220μF 5sec/DIV 3108 G17 CH2, VOUT 1V/DIV CH1, VIN 50mV/DIV CH3 VSTORE 1V/DIV CH4, VLDO 1V/DIV CSTORE = 470μF VOUT LOAD = 100μA |
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