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MC34700 データシート(PDF) 9 Page - Freescale Semiconductor, Inc |
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MC34700 データシート(HTML) 9 Page - Freescale Semiconductor, Inc |
9 / 31 page Analog Integrated Circuit Device Data Freescale Semiconductor 9 34700 ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS DYNAMIC ELECTRICAL CHARACTERISTICS Table 4. Dynamic Electrical Characteristics Characteristics noted under conditions 9.0V ≤ VIN ≤ 18V, -40°C ≤ TA ≤ 85°C, GND = 0V, unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions, unless otherwise noted. Characteristic Symbol Min Typ Max Unit OSCILLATOR Switching Frequency fSW 760 800 840 kHz VGREG LINEAR REGULATOR Maximum Input dV/dT VIN1 = VIN VIN_dV/dT - 10 - V/ µs ENABLE Delay from Enable to Soft Start DC1 tDELAY1 - 1.0 - ms Delay from Enable to Soft Start DC2, DC3 tDELAY2,3 - 160 - µs SOFT START Soft Start Duration DC1, 2, 3 tSS_BUCKREG 2.5 3.5 4.5 ms Soft Start Duration LDO tSS_LDO 0.3 0.5 0.7 ms RAMP GENERATORS Ramp Amplitude (DC/DC1) Typical Voltage Range VFF_GAIN1 x VIN1, VIN1 = 18V VRAMP_AMP1 - 1.0 - VP-P VFF Gain (DC/DC1) VFF_GAIN1 - 0.055 V/V Ramp Amplitude (DC/DC2,3) Typical Voltage Range VFF_GAIN2 x VIN2, VIN2 = 6.0V VRAMP_AMP2, 3 - 1.25 - VP-P VFF Gain (DC/DC2,3) VFF_GAIN2,3 - 0.208 V/V Ramp Bottom/Offset (DC/DC1,2,3) VRAMP_OS - 0.2 - V Min Duty Cycle (DC/DC1) ILOAD1 = 0A D1 - - 16 % Max Duty Cycle (DC/DC1) ILOAD1 = 0A D1 68.4 - - % Min Duty Cycle (DC/DC2,3) ILOAD1 = 0A D2,3 - 0 0 % Max Duty Cycle (DC/DC2,3) ILOAD1 = 0A D2,3 83.6 - - % POWER-GOOD PGOOD Reset Delay tPG-RESET 100 µs PGOOD Glitch Rejection tPG-FILTER 10 µs |
同様の部品番号 - MC34700 |
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同様の説明 - MC34700 |
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