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LT3582 数据表(PDF) 3 Page - Linear Technology |
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LT3582 数据表(HTML) 3 Page - Linear Technology |
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3 / 28 page  LT3582/LT3582-5/LT3582-12 3 3582512f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, VSHDN = VIN unless otherwise noted. (Note 3) Switching Regulator Characteristics SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ILIMIT_N Inverting Switch Current Limit l 490 600 720 mA RON_P Boost Switch On Resistance ISWP = 200mA 500 mΩ RON_N Inverting Switch On Resistance ISWN = –400mA 560 mΩ IOFF_P Boost Switch Leakage Current into SWP pin VSWP = 5V 0.01 0.5 μA IOFF_N Inverting Switch Leakage Current out of SWN pin VIN = 5.0, VSWN = 0.0 0.01 1 μA RON_DIS Output Disconnect Switch On Resistance VCAPP = 10V, RAMPP > 1.4V 1.4 Ω ILIMIT_DIS Output Disconnect Current Limit l 124 155 186 mA IVOUTP_PDS VOUTP Power-Down Discharge Current VOUTP = 8V 2.4 4.8 8.8 mA ICAPP_PDS CAPP Power-Down Discharge Current CAPP = 8V 1.2 2.4 4.4 mA IVOUTN_PDS VOUTN Power-Down Discharge Current VOUTN = –8V –1.4 –2.8 –4.2 mA TSTARTUP Configuration Startup Delay VIN> VIN_MIN & SHDN > VSHDN_VIH to I2C Enabled and Power-up Sequencing Start l 64 128 μs Programmable Output Characteristics6 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VVOUTP Positive Output Voltage LT3582-5 LT3582-12 l l 4.95 11.88 5 12 5.05 12.1 V V N_VOUTP Positive VOUTP Resolution2 9Bits VVOUTP_LSB VOUTP LSB2 25 mV VVOUTP_FS VOUTP Full Scale Voltage2 Code = BFh, VPLUS = 1 l 12.56 12.775 12.94 V VVOUTP_MIN VOUTP Minimum Voltage2 Code = 00h, VPLUS = 0 l 3.152 3.20 3.248 V VVOUTP_LR VOUTP Line Regulation Code = BFh, 2.575 < VIN < 5.5 –0.02 %/V VVOUTN Negative Output Voltage LT3582-5 LT3582-12 l l –5.075 –12.1 –5 –12 –4.925 –11.868 V V N_VOUTN Negative VOUTN Resolution2 8Bits VVOUTN_LSB VOUTN LSB2 –50 mV VVOUTN_FS VOUTN Full Scale Voltage2 Code = FFh l –14.2 –13.95 –13.7 V VVOUTN_MIN VOUTN Minimum Voltage2 Code = 00h l –1.23 –1.205 –1.18 V VVOUTN_LR VOUTN Line Regulation Code = FFh, 2.575 < VIN < 5.5 –0.01 %/V INL_VOUTP VOUTP Integral Nonlinearity2, 4 l ±0.6 LSB DNL_VOUTP VOUTP Differential Nonlinearity2, 4 l ±0.6 LSB INL_VOUTN VOUTN Integral Nonlinearity2 l ±0.85 LSB DNL_VOUTN VOUTN Differential Nonlinearity2 l ±0.85 LSB IRAMP00 RAMPP/RAMPN Pull Up Current IRMP Code = 00 VRAMPP = 0.0V VRAMPN = 0.0V l 0.7 1.0 1.3 μA IRAMP01 RAMPP/RAMPN Pull Up Current2 IRMP Code = 01 VRAMPP = 0.0V VRAMPN = 0.0V l 1.4 2.0 2.6 μA |
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