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LTM4686BIVPBF 数据表(PDF) 5 Page - Analog Devices |
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LTM4686BIVPBF 数据表(HTML) 5 Page - Analog Devices |
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5 / 130 page  LTM4686B 5 Rev. 0 For more information www.analog.com ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified internal operating temperature range (Note 2). Specified as each individual output channel (Note 4). TA = 25°C, VIN = 5V, RUNn = 5V, FREQUENCY_SWITCH = 1MHz, VOUT_COMMANDn = 1V and VOUT_UV_FAULT_RESPONSEn = TON_MAX_FAULT_RESPONSEn = 0x00 unless otherwise noted. All other command codes configured per factory-default EEPROM settings unless otherwise noted. Tested per Circuit 1, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ∆VOUTn(LS) Peak Output Voltage Deviation for Dynamic Load Step Load: 0A to 7A and 7A to 0A at 5A/µs, Figure 62 Circuit, VOUTn = 1V, VIN = 5VIN (Note 12) 42 mV tSETTLE Settling Time for Dynamic Load Step Load: 0A to 7A and 7A to 0A at 5A/µs, Figure 62 Circuit, VOUTn = 1V, VIN = 5VIN (Note 12) 60 µs IOUTn(OCL_PK) Output Current Limit, Peak Cycle-by-Cycle Inductor Peak Current Limit Inception Commanded by IOUT_OC_FAULT_LIMITn (Note 12) 36 A IOUTn(OCL_AVG) Output Current Limit, Time Averaged Time-Averaged Output Inductor Current Limit Inception Threshold 26A; See IO–RB–ACC Specification (Output Current Readback Accuracy) Control Section VFBCM0 Channel 0 Feedback Input Common Mode Range VOSNS0– Valid Input Range (Referred to SGND) VOSNS0+ Valid Input Range (Referred to SGND) l l –0.1 0.1 3.6 V V VFBCM1 Channel 1 Feedback Input Common Mode Range SGND Valid Input Range (Referred to GND) VOSNS1 Valid Input Range (Referred to SGND) l l –0.3 0.1 3.6 V V VOUT–RNG0 Full-Scale Command Voltage, Range 0 (Notes 7, 15) VOUTn Commanded to 3.600V, MFR_PWM_MODEn[1] = 0b Resolution LSB Step Size 3.548 12 1.375 3.651 V Bits mV VOUT–RNG1 Full-Scale Command Voltage, Range 1 (Notes 7, 15) VOUTn Commanded to 2.750V, MFR_PWM_MODEn[1] = 1b Resolution LSB Step Size 2.711 12 0.6875 2.788 V Bits mV RVOSNS0+ VOSNS0+ Impedance to SGND 0.05V ≤ VVOSNS0+ – VSGND ≤ 3.6V 41 kΩ RVOSNS1 VOSNS1 Impedance to SGND 0.05V ≤ VVOSNS1 – VSGND ≤ 3.6V 37 kΩ tON(MIN) Minimum On-Time (Note 8 ) 45 ns VOUT OV/UV (Overvoltage/Undervoltage) Supervisor Comparators (VOUT_OV/UV_FAULT_LIMIT and VOUT_OV/UV_WARN_LIMIT Monitors) NOV/UV_COMP Resolution, Output Voltage Supervisors (Note 15) 8 Bits VOV–RNG Output OV Comparator Threshold Detection Range (Note 15) High Range Scale, MFR_PWM_MODEn[1] = 0b Low Range Scale, MFR_PWM_MODEn[1] = 1b 1 0.5 4.0 2.7 V V VOU–STP Output OV and UV Comparator Threshold Programming LSB Step Size (Note 15) High Range Scale, MFR_PWM_MODEn[1] = 0b Low Range Scale, MFR_PWM_MODEn[1] = 1b 22 11 mV mV VOV–ACC Output OV Comparator Threshold Accuracy (See Note 14) 2V ≤ VVOSNS0+ – VVOSNS0– ≤ 4V, MFR_PWM_MODE0[1] = 0b 1V ≤ VVOSNS0+ – VVOSNS0– ≤ 2.7V, MFR_PWM_MODE0[1] = 1b 0.5V ≤ VVOSNS0+ – VVOSNS0– < 1V, MFR_PWM_MODE0[1] = 1b 2V ≤ VVOSNS1 – VSGND ≤ 4V, MFR_PWM_MODE1[1] = 0b 1.5V ≤ VVOSNS1 – VSGND ≤ 2.7V, MFR_PWM_MODE1[1] = 1b 0.5V ≤ VVOSNS1 – VSGND < 1.5V, MFR_PWM_MODE1[1] = 1b l l l l l l ±2 ±2 ±20 ±2 ±2 ±30 % % mV % % mV |
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