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LTC3805 数据表(PDF) 3 Page - Linear Technology |
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LTC3805 数据表(HTML) 3 Page - Linear Technology |
3 / 26 page LT4430 3 4430fb ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, FB = VFB, COMP = 1V, unless otherwise noted (Note 3). Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT4430 is tested under pulsed load conditions such that TJ ≈ TA. The LT4430E is guaranteed to meet specifications from 0°C to 125°C junction temperature. Specifications over the –40°C to 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The LT4430I is guaranteed over the –40°C to 125°C operating junction temperature range, the LT4430H is guaranteed over the –40°C to 150°C operating junction temperature range and the LT4430MP is tested and guaranteed over the –55°C to 150°C operating junction temperature range. High junction temperatures degrade operating lifetimes; operating lifetime is derated for junction temperatures greater than 125°C. Note that the maximum ambient temperature consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal impedance and other environmental factors. Note 3: All currents into device pins are positive. All currents out of device pins are negative. All voltages are referenced to GND unless otherwise specified. Note 4: This parameter is guaranteed by correlation and is not tested. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IOC Overshoot Control Charging Current VOC = 0V (E-, I-Grades) VOC = 0V (H-Grade) VOC = 0V (MP-Grade) ● ● ● –15 –17 –17 –8.5 –8.5 –8.5 –5 –5 –4 μA μA μA OC Clamp Voltage 0.93 V OC Amplifier Offset Voltage FB = 0.3V 48 mV AVOL Error Amplifier Open-Loop DC Gain VCOMP = 0.8V to 1V (E-, I-Grades) VCOMP = 0.8V to 1V (H-, MP-Grades) ● ● 60 55 80 80 dB dB Error Amplifier Unity-Gain Bandwidth No Load (Note 4) 9 MHz Error Amplifier Output Swing Low FB = 1V ● 0.1 0.35 0.55 V Error Amplifier Output Swing High FB = 0V (E-, I-Grades) FB = 0V (H-Grade) FB = 0V (MP-Grade) ● ● ● 1.2 1.2 1.15 1.33 1.33 1.33 1.5 1.55 1.55 V V V Error Amplifier Output Source Current FB = 0V, COMP = 1V (E-, I-Grades) FB = 0V, COMP = 1V (H-Grade) FB = 0V, COMP = 1V (MP-Grade) ● ● ● –800 –825 –825 –450 –450 –450 –225 –225 –200 μA μA μA Error Amplifier Output Sink Current FB = 1V, COMP = 1V 25 mA Opto Driver Inverting DC Gain –6.4 –6 –5.6 V/V Opto Driver –3dB Bandwidth No Load (Note 4) 600 kHz Opto Driver Output Swing Low FB = 0V, COMP = Open (E-, I-Grades) FB = 0V, COMP = Open (H-, MP-Grades) ● ● 0.5 0.5 0.85 0.9 V V Opto Driver Output Swing High VIN = 3V, FB = 1V, COMP = Open, IOPTO = 10mA (E-, I-, H-Grades) VIN = 3V, FB = 1V, COMP = Open, IOPTO = 10mA (MP-Grade) ● ● VIN – 1.25 VIN – 1.3 VIN – 1.05 VIN – 1.05 V V Opto Driver Output Swing High VIN = 20V, FB = 1V, COMP = Open, IOPTO = 10mA ● 4.2 5.6 7.5 V ISC Opto Driver Output Short-Circuit Current (Sourcing) FB = 1V, COMP = Open, OPTO = 0V (E-, I-, H-Grades) FB = 1V, COMP = Open, OPTO = 0V (MP-Grade) ● ● 10.5 9.5 22 22 45 45 mA mA Opto Driver Output Sink Current FB = 0V, OPTO = 1.5V (E-, I-, H-Grades) FB = 0V, OPTO = 1.5V (MP-Grade) ● ● 150 135 350 350 650 650 μA μA |
类似零件编号 - LTC3805 |
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类似说明 - LTC3805 |
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