Datasheet LT8640, LT8640-1 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 42V, 5A Synchronous Step-Down Silent Switcher with 2.5µA Quiescent Current |
| Pages / Page | 30 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Revision | D |
| File Format / Size | PDF / 1.8 Mb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
- LT8640EUDC#PBF LT8640EUDC#TRPBF LT8640EUDC-1#PBF LT8640EUDC-1#TRPBF LT8640EUDCF#PBF LT8640EUDCF#TRPBF LT8640EUDCF-1#PBF LT8640EUDCF-1#TRPBF LT8640HUDC#PBF LT8640HUDC#TRPBF LT8640HUDC-1#PBF LT8640HUDC-1#TRPBF LT8640HUDCF#PBF LT8640HUDCF#TRPBF LT8640IUDC#PBF LT8640IUDC#TRPBF LT8640IUDC-1#PBF LT8640IUDC-1#TRPBF LT8640IUDCF#PBF LT8640IUDCF#TRPBF LT8640IUDCF-1#PBF LT8640IUDCF-1#TRPBF LT8640JUDCF#PBF LT8640JUDCF#TRPBF LT8640JUDCF#WPBF LT8640JUDCF#WTRPBF LT8640JUDCF-1#PBF LT8640JUDCF-1#TRPBF LT8640JUDCF-1#WPBF LT8640JUDCF-1#WTRPBF
Text Version of Document
link to page 2 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 ambient temperature (TA in °C) and power dissipation (PD, in Watts) may cause permanent damage to the device. Exposure to any Absolute according to 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 over Information section for information on improving the thermal resistance the –40°C to 125°C operating junction temperature range are assured by and for actual temperature measurements of a demo board in typical design, characterization, and correlation with statistical process controls. operating conditions. The LT8640I/LT8640-1I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT8640J/LT8640-1J and the
Note 4:
This IC includes overtemperature protection that is intended to LT8640H/LT8640-1H is guaranteed over the full –40°C to 150°C operating protect the device during overload conditions. Junction temperature will junction temperature range. High junction temperatures degrade operating exceed 150°C when overtemperature protection is active. Continuous lifetimes. Operating lifetime is derated at junction temperatures greater operation above the specified maximum operating junction temperature than 125°C. The junction temperature (T will reduce lifetime. J, in °C) is calculated from the Rev. D 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 ambient temperature (TA in °C) and power dissipation (PD, in Watts) may cause permanent damage to the device. Exposure to any Absolute according to 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 over Information section for information on improving the thermal resistance the –40°C to 125°C operating junction temperature range are assured by and for actual temperature measurements of a demo board in typical design, characterization, and correlation with statistical process controls. operating conditions. The LT8640I/LT8640-1I is guaranteed over the full –40°C to 125°C operating junction temperature range. The LT8640J/LT8640-1J and the
Note 4:
This IC includes overtemperature protection that is intended to LT8640H/LT8640-1H is guaranteed over the full –40°C to 150°C operating protect the device during overload conditions. Junction temperature will junction temperature range. High junction temperatures degrade operating exceed 150°C when overtemperature protection is active. Continuous lifetimes. Operating lifetime is derated at junction temperatures greater operation above the specified maximum operating junction temperature than 125°C. The junction temperature (T will reduce lifetime. J, in °C) is calculated from the Rev. D 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
