Datasheet LT8601 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 42V Triple Monolithic Synchronous Step-Down Regulator |
| 页数 / 页 | 26 / 3 — elecTrical characTerisTics. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 1.6 Mb |
| 文件语言 | 英语 |
elecTrical characTerisTics. The. denotes the specifications which apply over the full operating
文件文字版本
LT8601
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V, PVIN3 = 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 All Channels Active, No Load (Note 4) 30 µA All Channels Active,100µA on VOUT2 (Note 4) 70 µA EN/UVLO Threshold EN/UVLO Rising l 1.15 1.2 1.25 V EN/UVLO Falling l 1.0 1.15 1.2 V EN/UVLO Input Current EN/UVLO = 1.2V, VIN = 42V −40 40 nA
Oscillator
Switching Frequency RT = 28.7k l 1.8 2 2.2 MHz RT = 254k l 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 Input Current FB1 l −100 100 nA FB1 Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V SW1 Peak Current Limit VIN = PVIN1 = PVIN2 = 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 = –350μA l 0.13 0.3 V PG1 Leakage Current PG1 = 5V, FB1 = 1V l 30 μA TRKSS1 Pull-Up Current TRKSS1 = 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
Channel 2
Feedback Voltage l 0.988 1 1.012 V Input Current FB2 l −100 100 nA FB2 Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V SW2 Peak Current Limit VIN = PVIN1 = PVIN2 = 6V 3.5 4.0 4.5 A SW2 Leakage Current 0.1 1 µA SW2 Top On Resistance ISW2 = 1A 150 mΩ SW2 Bottom On Resistance ISW2 = 1A 100 mΩ Lower FB2 Power Good Threshold Percentage of VFB2 l 89 92 95 % Upper FB2 Power Good Threshold Percentage of VFB2 l 105 108 111 % PG2 Output Voltage Low IPG2 = –350µA l 0.13 0.3 V 8601fa For more information www.linear.com/LT8601 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration 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 temperature range, otherwise specifications are at TA = 25°C. VIN = PVIN1 = PVIN2 = 12V, EN/UVLO = 3V, PVIN3 = 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 All Channels Active, No Load (Note 4) 30 µA All Channels Active,100µA on VOUT2 (Note 4) 70 µA EN/UVLO Threshold EN/UVLO Rising l 1.15 1.2 1.25 V EN/UVLO Falling l 1.0 1.15 1.2 V EN/UVLO Input Current EN/UVLO = 1.2V, VIN = 42V −40 40 nA
Oscillator
Switching Frequency RT = 28.7k l 1.8 2 2.2 MHz RT = 254k l 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 Input Current FB1 l −100 100 nA FB1 Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V SW1 Peak Current Limit VIN = PVIN1 = PVIN2 = 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 = –350μA l 0.13 0.3 V PG1 Leakage Current PG1 = 5V, FB1 = 1V l 30 μA TRKSS1 Pull-Up Current TRKSS1 = 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
Channel 2
Feedback Voltage l 0.988 1 1.012 V Input Current FB2 l −100 100 nA FB2 Voltage Line Regulation VIN = 3V to 42V 0.002 0.01 %/V SW2 Peak Current Limit VIN = PVIN1 = PVIN2 = 6V 3.5 4.0 4.5 A SW2 Leakage Current 0.1 1 µA SW2 Top On Resistance ISW2 = 1A 150 mΩ SW2 Bottom On Resistance ISW2 = 1A 100 mΩ Lower FB2 Power Good Threshold Percentage of VFB2 l 89 92 95 % Upper FB2 Power Good Threshold Percentage of VFB2 l 105 108 111 % PG2 Output Voltage Low IPG2 = –350µA l 0.13 0.3 V 8601fa For more information www.linear.com/LT8601 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts