Datasheet LT8602 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 42V Quad Monolithic Synchronous Step-Down Regulator |
| 页数 / 页 | 30 / 3 — elecTrical characTerisTics. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 1.9 Mb |
| 文件语言 | 英语 |
elecTrical characTerisTics. The. denotes the specifications which apply over the full operating
该数据表的模型线
LT8602
文件文字版本
LT8602
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V, PVIN3 = PVIN4 = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage l 2.7 3 V Minimum Operating Voltage, to Start l 3.1 3.5 V VIN Quiescent Current, Shutdown EN/UVLO = 0.4V 0.1 1 µA VIN Quiescent Current, Operating No Load (Note 4) 30 µA 100µA on VOUT2 (Note 4) 70 µA EN/UVLO Threshold EN/UVLO Rising 1.15 1.2 1.25 V EN/UVLO Hysteresis 50 mV EN/UVLO Input Current EN/UVLO = 2V –40 40 nA
Oscillator
Switching Frequency RT = 28.9k l 1.8 2 2.2 MHz RT = 254k 0.225 0.25 0.275 MHz SYNC Input Frequency Range l 0.25 2.2 MHz SYNC Input Voltage Low l 0.3 V SYNC Input Voltage High l 1.2 V SYNC Input Current –100 100 nA
Channel 1
Feedback Voltage l 0.988 1 1.012 V FB Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V Input Current FB1 l –100 100 nA SW1 Peak Current Limit VIN = PVIN1 = 6V 2.3 2.7 3.0 A SW1 Leakage Current 0.1 1 µA SW1 Top On Resistance ISW1 = 1A 240 mΩ SW1 Bottom On Resistance ISW1 = 1A 170 mΩ Lower FB1 Power Good Threshold Percentage of VFB1 l 89 92 95 % Upper FB1 Power Good Threshold Percentage of VFB1 l 105 108 111 % PG1 Output Voltage Low IPG1 = –100μA l 0.1 0.2 V PG1 Leakage Current PG1 = 5V, FB1 = 1V l 30 µA TRKSS1 Pull-Up Current SS1 = 0.2V 1.5 2.4 3.1 μA Minimum Switch-On Time ISW1 = 1A 60 ns Minimum Switch-Off Time ISW1 = 1A 70 ns 8602fb For more information www.linear.com/LT8602 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating junction temperature range, otherwise specifications are at TA = 25°C. VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V, PVIN3 = PVIN4 = 3.3V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage l 2.7 3 V Minimum Operating Voltage, to Start l 3.1 3.5 V VIN Quiescent Current, Shutdown EN/UVLO = 0.4V 0.1 1 µA VIN Quiescent Current, Operating No Load (Note 4) 30 µA 100µA on VOUT2 (Note 4) 70 µA EN/UVLO Threshold EN/UVLO Rising 1.15 1.2 1.25 V EN/UVLO Hysteresis 50 mV EN/UVLO Input Current EN/UVLO = 2V –40 40 nA
Oscillator
Switching Frequency RT = 28.9k l 1.8 2 2.2 MHz RT = 254k 0.225 0.25 0.275 MHz SYNC Input Frequency Range l 0.25 2.2 MHz SYNC Input Voltage Low l 0.3 V SYNC Input Voltage High l 1.2 V SYNC Input Current –100 100 nA
Channel 1
Feedback Voltage l 0.988 1 1.012 V FB Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V Input Current FB1 l –100 100 nA SW1 Peak Current Limit VIN = PVIN1 = 6V 2.3 2.7 3.0 A SW1 Leakage Current 0.1 1 µA SW1 Top On Resistance ISW1 = 1A 240 mΩ SW1 Bottom On Resistance ISW1 = 1A 170 mΩ Lower FB1 Power Good Threshold Percentage of VFB1 l 89 92 95 % Upper FB1 Power Good Threshold Percentage of VFB1 l 105 108 111 % PG1 Output Voltage Low IPG1 = –100μA l 0.1 0.2 V PG1 Leakage Current PG1 = 5V, FB1 = 1V l 30 µA TRKSS1 Pull-Up Current SS1 = 0.2V 1.5 2.4 3.1 μA Minimum Switch-On Time ISW1 = 1A 60 ns Minimum Switch-Off Time ISW1 = 1A 70 ns 8602fb For more information www.linear.com/LT8602 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts