Datasheet LT8611 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 42V, 2.5A Synchronous Step-Down Regulator with Current Sense and 2.5μA Quiescent Current |
| Pages / Page | 26 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| File Format / Size | PDF / 343 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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LT8611
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
INTVCC Undervoltage Lockout 2.5 2.6 2.7 V BIAS Pin Current Consumption VBIAS = 3.3V, ILOAD = 1A, 2MHz 8.5 mA Minimum On-Time ILOAD = 1A, SYNC = 0V l 30 50 70 ns ILOAD = 1A, SYNC = 3.3V l 30 45 65 ns Minimum Off-Time 50 80 110 ns Oscillator Frequency RT = 221k, ILOAD = 1A l 180 210 240 kHz RT = 60.4k, ILOAD = 1A l 665 700 735 kHz RT = 18.2k, ILOAD = 1A l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 120 mΩ Top Power NMOS Current Limit VINTVCC = 3.4V l 3.5 4.8 5.8 A Bottom Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 65 mΩ Bottom Power NMOS Current Limit VINTVCC = 3.4V 2.5 3.3 4.8 A SW Leakage Current VIN = 42V, VSW = 0V, 42V –1.5 1.5 µA EN/UV Pin Threshold EN/UV Rising l 0.94 1.0 1.06 V EN/UV Pin Hysteresis 40 mV EN/UV Pin Current VEN/UV = 2V –20 20 nA PG Upper Threshold Offset from VFB VFB Falling l 6 9.0 12 % PG Lower Threshold Offset from VFB VFB Rising l –6 –9.0 –12 % PG Hysteresis 1.3 % PG Leakage VPG = 3.3V –40 40 nA PG Pull-Down Resistance VPG = 0.1V l 680 2000 Ω SYNC Threshold SYNC Falling 0.8 1.1 1.4 V SYNC Rising 1.6 2.0 2.4 V SYNC Pin Current VSYNC = 2V –40 40 nA TR/SS Source Current l 1.2 2 3.2 µA TR/SS Pull-Down Resistance Fault Condition, TR/SS = 0.1V 230 Ω Current Sense Voltage (VISP-ISN) VICTRL = 1.5V, VISN = 3.3V l 48 50 52 mV VICTRL = 1.5V, VISN = 0V l 46 50.5 56 mV VICTRL = 800mV, VISN = 3.3V l 38 41 46 mV VICTRL = 800mV, VISN = 0V l 37 42 47 mV VICTRL = 200mV, VISN = 3.3V l 5 10 15 mV VICTRL = 200mV, VISN = 0V l 4 10.5 17 mV IMON Monitor Pin Voltage VISP-ISN = 50mV, VISN = 3.3V l 0.960 1.00 1.040 V VISP-ISN = 50mV, VISN = 0V l 0.890 0.99 1.090 V VISP-ISN = 10mV, VISN = 3.3V l 130 220 320 mV VISP-ISN = 10mV, VISN = 0V l 110 205 300 mV ISP, ISN Pin Bias Current l –20 20 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. High junction temperatures degrade operating may cause permanent damage to the device. Exposure to any Absolute lifetimes. Operating lifetime is derated at junction temperatures greater Maximum Rating condition for extended periods may affect device than 125°C. reliability and lifetime.
Note 3:
This IC includes overtemperature protection that is intended to
Note 2:
The LT8611E is guaranteed to meet performance specifications protect the device during overload conditions. Junction temperature will from 0°C to 125°C junction temperature. Specifications over the –40°C exceed 150°C when overtemperature protection is active. Continuous to 125°C operating junction temperature range are assured by design, operation above the specified maximum operating junction temperature characterization, and correlation with statistical process controls. The will reduce lifetime. LT8611I is guaranteed over the full –40°C to 125°C operating junction 8611fa For more information www.linear.com/LT8611 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 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. PARAMETER CONDITIONS MIN TYP MAX UNITS
INTVCC Undervoltage Lockout 2.5 2.6 2.7 V BIAS Pin Current Consumption VBIAS = 3.3V, ILOAD = 1A, 2MHz 8.5 mA Minimum On-Time ILOAD = 1A, SYNC = 0V l 30 50 70 ns ILOAD = 1A, SYNC = 3.3V l 30 45 65 ns Minimum Off-Time 50 80 110 ns Oscillator Frequency RT = 221k, ILOAD = 1A l 180 210 240 kHz RT = 60.4k, ILOAD = 1A l 665 700 735 kHz RT = 18.2k, ILOAD = 1A l 1.85 2.00 2.15 MHz Top Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 120 mΩ Top Power NMOS Current Limit VINTVCC = 3.4V l 3.5 4.8 5.8 A Bottom Power NMOS On-Resistance VINTVCC = 3.4V, ISW = 1A 65 mΩ Bottom Power NMOS Current Limit VINTVCC = 3.4V 2.5 3.3 4.8 A SW Leakage Current VIN = 42V, VSW = 0V, 42V –1.5 1.5 µA EN/UV Pin Threshold EN/UV Rising l 0.94 1.0 1.06 V EN/UV Pin Hysteresis 40 mV EN/UV Pin Current VEN/UV = 2V –20 20 nA PG Upper Threshold Offset from VFB VFB Falling l 6 9.0 12 % PG Lower Threshold Offset from VFB VFB Rising l –6 –9.0 –12 % PG Hysteresis 1.3 % PG Leakage VPG = 3.3V –40 40 nA PG Pull-Down Resistance VPG = 0.1V l 680 2000 Ω SYNC Threshold SYNC Falling 0.8 1.1 1.4 V SYNC Rising 1.6 2.0 2.4 V SYNC Pin Current VSYNC = 2V –40 40 nA TR/SS Source Current l 1.2 2 3.2 µA TR/SS Pull-Down Resistance Fault Condition, TR/SS = 0.1V 230 Ω Current Sense Voltage (VISP-ISN) VICTRL = 1.5V, VISN = 3.3V l 48 50 52 mV VICTRL = 1.5V, VISN = 0V l 46 50.5 56 mV VICTRL = 800mV, VISN = 3.3V l 38 41 46 mV VICTRL = 800mV, VISN = 0V l 37 42 47 mV VICTRL = 200mV, VISN = 3.3V l 5 10 15 mV VICTRL = 200mV, VISN = 0V l 4 10.5 17 mV IMON Monitor Pin Voltage VISP-ISN = 50mV, VISN = 3.3V l 0.960 1.00 1.040 V VISP-ISN = 50mV, VISN = 0V l 0.890 0.99 1.090 V VISP-ISN = 10mV, VISN = 3.3V l 130 220 320 mV VISP-ISN = 10mV, VISN = 0V l 110 205 300 mV ISP, ISN Pin Bias Current l –20 20 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. High junction temperatures degrade operating may cause permanent damage to the device. Exposure to any Absolute lifetimes. Operating lifetime is derated at junction temperatures greater Maximum Rating condition for extended periods may affect device than 125°C. reliability and lifetime.
Note 3:
This IC includes overtemperature protection that is intended to
Note 2:
The LT8611E is guaranteed to meet performance specifications protect the device during overload conditions. Junction temperature will from 0°C to 125°C junction temperature. Specifications over the –40°C exceed 150°C when overtemperature protection is active. Continuous to 125°C operating junction temperature range are assured by design, operation above the specified maximum operating junction temperature characterization, and correlation with statistical process controls. The will reduce lifetime. LT8611I is guaranteed over the full –40°C to 125°C operating junction 8611fa For more information www.linear.com/LT8611 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 Typical Application Related Parts
