Datasheet LT8711 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Micropower Synchronous Multitopology Controller with 42V Input Capability |
| Pages / Page | 38 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Revision | A |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
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LT8711
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VBIAS = 12V, unless otherwise noted (Note 3). PARAMETER CONDITIONS MIN TYP MAX UNITS
SS Charge Current VSS = 0V, Current Flows Out of SS pin l 6 10 15 µA SS Low Detection Voltage Part Exiting Undervoltage Lockout l 65 85 105 mV EN/FBIN Active Mode EN/FBIN Rising l 1.28 1.35 1.42 V EN/FBIN Chip Enable EN/FBIN Rising l 0.97 1.03 1.11 V EN/FBIN Falling l 0.94 1 1.08 V EN/FBIN Chip Enable Hysteresis 30 mV EN/FBIN Input Voltage Low Shutdown Mode l 0.2 V EN/FBIN Current Limit Adjustment Voltage Full Current Limit l 1.27 V Near Zero Current Limit l 1.12 V EN/FBIN Pin Input Bias Current VEN/FBIN = 12V l –50 0 50 nA EN/FBIN Amp Transconductance VFB = 0.6V 40 µmhos EN/FBIN Amp Voltage Gain VFB = 0.6V 100 V/V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings characterization and correlation with statistical process controls. The may cause permanent damage to the device. Exposure to any Absolute LT8711I is guaranteed over the full –40°C to 125°C operating junction Maximum Rating condition for extended periods may affect device temperature range. reliability and lifetime.
Note 4:
Rise and fall times are measured using 10% and 90% levels. Delay
Note 2:
Do not apply a positive or negative voltage or current source to times are measured using 50% levels. BG, TG and INTVEE pins, otherwise permanent damage may occur.
Note 5:
This IC includes overtemperature protection that is intended
Note 3:
The LT8711E is guaranteed to meet performance specifications to protect the device during momentary overload conditions. Junction from 0°C to 125°C junction temperature. Specifications over the temperature will exceed 125°C when overtemperature protection is active. –40°C to 125°C operating temperature range are assured by design, Continuous operation over the specified maximum operating junction temperature may impair device reliability. Rev A 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Start-Up and Fault Sequence Operation Applications Information Appendix 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. VIN = 12V, VBIAS = 12V, unless otherwise noted (Note 3). PARAMETER CONDITIONS MIN TYP MAX UNITS
SS Charge Current VSS = 0V, Current Flows Out of SS pin l 6 10 15 µA SS Low Detection Voltage Part Exiting Undervoltage Lockout l 65 85 105 mV EN/FBIN Active Mode EN/FBIN Rising l 1.28 1.35 1.42 V EN/FBIN Chip Enable EN/FBIN Rising l 0.97 1.03 1.11 V EN/FBIN Falling l 0.94 1 1.08 V EN/FBIN Chip Enable Hysteresis 30 mV EN/FBIN Input Voltage Low Shutdown Mode l 0.2 V EN/FBIN Current Limit Adjustment Voltage Full Current Limit l 1.27 V Near Zero Current Limit l 1.12 V EN/FBIN Pin Input Bias Current VEN/FBIN = 12V l –50 0 50 nA EN/FBIN Amp Transconductance VFB = 0.6V 40 µmhos EN/FBIN Amp Voltage Gain VFB = 0.6V 100 V/V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings characterization and correlation with statistical process controls. The may cause permanent damage to the device. Exposure to any Absolute LT8711I is guaranteed over the full –40°C to 125°C operating junction Maximum Rating condition for extended periods may affect device temperature range. reliability and lifetime.
Note 4:
Rise and fall times are measured using 10% and 90% levels. Delay
Note 2:
Do not apply a positive or negative voltage or current source to times are measured using 50% levels. BG, TG and INTVEE pins, otherwise permanent damage may occur.
Note 5:
This IC includes overtemperature protection that is intended
Note 3:
The LT8711E is guaranteed to meet performance specifications to protect the device during momentary overload conditions. Junction from 0°C to 125°C junction temperature. Specifications over the temperature will exceed 125°C when overtemperature protection is active. –40°C to 125°C operating temperature range are assured by design, Continuous operation over the specified maximum operating junction temperature may impair device reliability. Rev A 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Start-Up and Fault Sequence Operation Applications Information Appendix Typical Applications Package Description Typical Application Related Parts
