Datasheet LT8640, LT8640-1 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 42V, 5A Synchronous Step-Down Silent Switcher with 2.5μA Quiescent Current |
| 页数 / 页 | 30 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 修订版 | C |
| 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
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LT8640/LT8640-1
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
LT8640-1 Output Sink Current in Forced VFB = 1.01V, L = 6.8µH, RT = 60.4k 0.25 0.6 1 A Continuous Mode LT8640-1 VIN to Disable Forced Continuous VIN Rising 35 37 39 V Mode LT8640-1 VFB Offset from Feedback VFB Rising 7 9.5 12 % Reference Voltage to Disable Forced Continuous Mode
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature (TA in °C) and power dissipation (PD, in Watts) according to may cause permanent damage to the device. Exposure to any Absolute the formula: Maximum Rating condition for extended periods may affect device TJ = TA + (PD • θJA) reliability and lifetime. where θJA (in °C/W) is the package thermal impedance.
Note 2:
The LT8640E/LT8640-1E is guaranteed to meet performance
Note 3:
θ values determined per JEDEC 51-7, 51-12. See Applications specifications from 0°C to 125°C junction temperature. Specifications Information section for information on improving the thermal resistance over the –40°C to 125°C operating junction temperature range are assured and for actual temperature measurements of a demo board in typical by design, characterization, and correlation with statistical process operating conditions. controls. The LT8640I/LT8640-1I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT8640H/LT8640-1H is
Note 4:
This IC includes overtemperature protection that is intended to guaranteed over the full –40°C to 150°C operating junction temperature protect the device during overload conditions. Junction temperature will range. High junction temperatures degrade operating lifetimes. Operating exceed 150°C when overtemperature protection is active. Continuous lifetime is derated at junction temperatures greater than 125°C. operation above the specified maximum operating junction temperature The junction temperature (T will reduce lifetime. J, in °C) is calculated from the ambient Rev.C 4 For more information www.analog.com 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. PARAMETER CONDITIONS MIN TYP MAX UNITS
LT8640-1 Output Sink Current in Forced VFB = 1.01V, L = 6.8µH, RT = 60.4k 0.25 0.6 1 A Continuous Mode LT8640-1 VIN to Disable Forced Continuous VIN Rising 35 37 39 V Mode LT8640-1 VFB Offset from Feedback VFB Rising 7 9.5 12 % Reference Voltage to Disable Forced Continuous Mode
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature (TA in °C) and power dissipation (PD, in Watts) according to may cause permanent damage to the device. Exposure to any Absolute the formula: Maximum Rating condition for extended periods may affect device TJ = TA + (PD • θJA) reliability and lifetime. where θJA (in °C/W) is the package thermal impedance.
Note 2:
The LT8640E/LT8640-1E is guaranteed to meet performance
Note 3:
θ values determined per JEDEC 51-7, 51-12. See Applications specifications from 0°C to 125°C junction temperature. Specifications Information section for information on improving the thermal resistance over the –40°C to 125°C operating junction temperature range are assured and for actual temperature measurements of a demo board in typical by design, characterization, and correlation with statistical process operating conditions. controls. The LT8640I/LT8640-1I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT8640H/LT8640-1H is
Note 4:
This IC includes overtemperature protection that is intended to guaranteed over the full –40°C to 150°C operating junction temperature protect the device during overload conditions. Junction temperature will range. High junction temperatures degrade operating lifetimes. Operating exceed 150°C when overtemperature protection is active. Continuous lifetime is derated at junction temperatures greater than 125°C. operation above the specified maximum operating junction temperature The junction temperature (T will reduce lifetime. J, in °C) is calculated from the ambient Rev.C 4 For more information www.analog.com 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