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LTC3700 数据表(PDF) 2 Page - Linear Technology |
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LTC3700 数据表(HTML) 2 Page - Linear Technology |
2 / 16 page 2 LTC3700 3700f ABSOLUTE MAXIMUM RATINGS (Note 1) Buck Input Supply Voltage (VIN) ................– 0.3V to 10V SENSE –, PGATE Voltages ............. – 0.3V to (VIN + 0.3V) VFB, ITH/RUN Voltages ..............................–0.3V to 2.4V PGATE Peak Output Current (< 10 µs) ....................... 1A LDO Input Supply Voltage (VIN2) .................– 0.3V to 6V LDO, VFB2 Voltages ..................... – 0.3V to (VIN2 + 0.3V) PGOOD Voltage .........................................– 0.3V to 10V LDO Peak Output Current (< 10 µs) ..................... 500mA Storage Ambient Temperature Range ... – 65 °C to 150°C Operating Temperature Range (Note 2) ... –40 °C to 85°C Junction Temperature (Note 3) ............................. 150 °C Lead Temperature (Soldering, 10 sec).................. 300 °C PACKAGE/ORDER INFORMATION TJMAX = 150°C, θJA = 230°C/ W MS PART MARKING ORDER PART NUMBER LTC3700EMS LTXN Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = VIN2 = 4.2V unless otherwise specified. (Note 2) 1 2 3 4 5 VIN2 LDO VFB2 PGOOD GND 10 9 8 7 6 ITH/RUN VFB SENSE– VIN PGATE TOP VIEW MS PACKAGE 10-LEAD PLASTIC MSOP PARAMETER CONDITIONS MIN TYP MAX UNITS Buck DC/DC Controller Input DC Supply Current Typicals at VIN = 4.2V (Note 4) Normal Operation 2.65V ≤ VIN ≤ 9.8V 210 340 µA Sleep Mode 2.65V ≤ VIN ≤ 9.8V 200 330 µA Shutdown 2.65V ≤ VIN ≤ 9.8V, VITH /RUN = 0V 10 30 µA UVLO VIN < UVLO Threshold 10 30 µA Undervoltage Lockout Threshold VIN Falling q 1.90 2.10 2.60 V VIN Rising q 2.00 2.20 2.65 V Shutdown Threshold (at ITH /RUN) q 0.15 0.30 0.45 V Start-Up Current Source VITH /RUN = 0V 0.25 0.5 0.85 µA Regulated Feedback Voltage (Note 5), 0 °C to 70°C q 0.780 0.800 0.820 V (Note 5), –40 °C to 85°C q 0.770 0.800 0.830 V Output Voltage Line Regulation 2.65V ≤ VIN ≤ 9.8V (Note 5) 0.1 mV/V Output Voltage Load Regulation ITH /RUN Sinking 5µA (Note 5) 4 mV/ µA ITH /RUN Sourcing 5µA (Note 5) 4 mV/ µA VFB Input Current (Note 5) 10 50 nA Overvoltage Protect Threshold Measured at VFB 0.820 0.860 0.910 V Overvoltage Protect Hysteresis 20 mV Oscillator Frequency VFB = 0.8V 500 550 650 kHz VFB = 0V 110 kHz Gate Drive Rise Time CLOAD = 3000pF 40 ns Gate Drive Fall Time CLOAD = 3000pF 40 ns Peak Current Sense Voltage (Note 6) 120 mV Peak Current Sense Voltage in Burst Mode 30 mV |
类似零件编号 - LTC3700 |
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类似说明 - LTC3700 |
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