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LTC3886 Datasheet(PDF) 6 Page - Linear Technology |
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LTC3886 Datasheet(HTML) 6 Page - Linear Technology |
6 / 116 page LTC3886 6 3886f For more information www.linear.com/LTC3886 elecTrical characTerisTics The l denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TJ = 25°C (Note 2). VIN = 16V, EXTVCC = 0V, VRUN0 = 3.3V, VRUN1 = 3.3V fSYNC = 350kHz (externally driven), and all programmable parameters at factory default unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS tON(MIN) Minimum On-Time 90 ns OV/UV Output Voltage Supervisor N Resolution 9 Bits VRANGE0 Range 0 Maximum Threshold 14 V VRANGE1 Range 1 Maximum Threshold 7 V VOUSTP0 Range 0 Step Size, FSR = 16.352V (Note 10) 32 mV VOUSTP1 Range 1 Step Size, FSR = 8.176V 16 mV VTHACC0 Range 0 Threshold Accuracy 2V < VOUT < 14V l ±2.5 % VTHACC1 Range 1 Threshold Accuracy 1V < VOUT < 7V l ±2.5 % tPROPOV1 OV Comparator to FAULT Low Time VOD = 10% of Threshold 35 µs tPROPUV1 UV Comparator to FAULT Low Time VOD = 10% of Threshold 100 µs VIN Voltage Supervisor N Resolution 9 Bits VIN(RANGE) Full-Scale Voltage (Note 11) 4.5 61.32 V VIN(STP) Step Size 120 mV VIN(THACCH) Threshold Accuracy 12V < VIN < 60V l ±3 % VIN(THACCL) Threshold Accuracy 4.5V < VIN < 15V ±6 % tPROP(VIN) Comparator Response Time (VIN_ON and VIN_OFF) VOD = 10% of Threshold 100 µs Output Voltage Readback N Resolution LSB Step Size 16 250 Bits µV VF/S Full-Scale Sense Voltage (Note 10) VRUN = 0V (Note 8) 16.384 V VOUT_TUE Total Unadjusted Error TJ = 25°C, VOUT > 1.0V (Note 8) l 0.2 0.5 % % VOS Zero-Code Offset Voltage l ±500 µV tCONVERT Conversion Time (Note 6) 100 ms VIN Voltage Readback N Resolution (Note 5) 10 Bits VF/S Full-Scale Input Voltage (Note 11) 66.56 V VIN_TUE Total Unadjusted Error TJ = 25°C, VVIN > 4.5V l 0.4 2 % % tCONVERT Conversion Time (Note 6) 100 ms Output Current Readback N Resolution LSB Step Size (Note 5) 0V ≤ |VISENSE+ – VISENSE–| < 16mV 16mV ≤ |VISENSE+ – VISENSE–| < 32mV 32mV ≤ |VISENSE+ – VISENSE–| < 64mV 64mV ≤ |VISENSE+ – VISENSE–| < 100mV 10 15.26 30.52 61 122 Bits µV µV µV µV IF/S Full-Scale Output Current (Note 7) RISENSE = 1mΩ ±100 A IOUT_TUE Total Unadjusted Error (Note 8) 10mV ≤ VISENSE ≤ 120mV l ±1.5 % VOS Zero-Code Offset Voltage ±32 µV |
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