Datasheet LT3758, LT3758A (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller |
| Pages / Page | 38 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| Revision | F |
| File Format / Size | PDF / 1.4 Mb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
- LT3758AEDD#PBF LT3758AEDD#TRPBF LT3758AEMSE#PBF LT3758AEMSE#TRPBF LT3758AHMSE#PBF LT3758AHMSE#TRPBF LT3758AIDD#PBF LT3758AIDD#TRPBF LT3758AIMSE#PBF LT3758AIMSE#TRPBF LT3758AMPMSE#PBF LT3758AMPMSE#TRPBF LT3758EDD#PBF LT3758EDD#TRPBF LT3758EMSE#PBF LT3758EMSE#TRPBF LT3758HMSE#PBF LT3758HMSE#TRPBF LT3758IDD#PBF LT3758IDD#TRPBF LT3758IMSE#PBF LT3758IMSE#TRPBF LT3758MPMSE#PBF LT3758MPMSE#TRPBF
Text Version of Document
LT3758/LT3758A
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 24V, SHDN/UVLO = 24V, SENSE = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
INTVCC Current in Shutdown SHDN/UVLO = 0V, INTVCC = 8V 16 µA INTVCC Voltage to Bypass Internal LDO 7.5 V
Logic Inputs
SHDN/UVLO Threshold Voltage Falling VIN = INTVCC = 8V l 1.17 1.22 1.27 V SHDN/UVLO Input Low Voltage IVIN Drops Below 1µA 0.4 V SHDN/UVLO Pin Bias Current Low SHDN/UVLO = 1.15V 1.7 2 2.5 µA SHDN/UVLO Pin Bias Current High SHDN/UVLO = 1.33V 10 100 nA
Gate Driver
tr Gate Driver Output Rise Time CL = 3300pF (Note 5), INTVCC = 7.5V 22 ns tf Gate Driver Output Fall Time CL = 3300pF (Note 5), INTVCC = 7.5V 20 ns Gate Output Low (VOL) 0.05 V Gate Output High (VOH) INTVCC V –0.05
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LT3758/LT3758A are tested in a feedback loop which servos may cause permanent damage to the device. Exposure to any Absolute VFBX to the reference voltages (1.6V and –0.8V) with the VC pin forced Maximum Rating condition for extended periods may affect device to 1.3V. reliability and lifetime.
Note 4:
FBX overvoltage lockout is measured at VFBX(OVERVOLTAGE) relative
Note 2:
The LT3758E/LT3758AE are guaranteed to meet performance to regulated VFBX(REG). specifications from the 0°C to 125°C junction temperature. Specifications
Note 5:
Rise and fall times are measured at 10% and 90% levels. over the –40°C to 125°C operating junction temperature range are
Note 6:
SHDN/UVLO = 1.33V when V assured by design, characterization and correlation with statistical process IN = 5.5V. controls. The LT3758I/LT3758AI are guaranteed over the full –40°C to
Note 7:
For VIN below 6V, the SHDN/UVLO pin must not exceed VIN. 125°C operating junction temperature range. The LT3758H/LT3758AH are
Note 8:
The LT3758/LT3758A include overtemperature protection that guaranteed over the full –40°C to 150°C operating junction temperature is intended to protect the device during momentary overload conditions. range. High junction temperatures degrade operating lifetimes. Operating Junction temperature will exceed the maximum operating junction lifetime is derated at junction temperatures greater than 125°C. The temperature when overtemperature protection is active. Continuous LT3758MP/LT3758AMP are 100% tested and guaranteed over the full operation above the specified maximum operating junction temperature –55°C to 150°C operating junction temperature range. may impair device reliability. Rev F 4 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Applications Related Parts Typical Applications Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram 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 = 24V, SHDN/UVLO = 24V, SENSE = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
INTVCC Current in Shutdown SHDN/UVLO = 0V, INTVCC = 8V 16 µA INTVCC Voltage to Bypass Internal LDO 7.5 V
Logic Inputs
SHDN/UVLO Threshold Voltage Falling VIN = INTVCC = 8V l 1.17 1.22 1.27 V SHDN/UVLO Input Low Voltage IVIN Drops Below 1µA 0.4 V SHDN/UVLO Pin Bias Current Low SHDN/UVLO = 1.15V 1.7 2 2.5 µA SHDN/UVLO Pin Bias Current High SHDN/UVLO = 1.33V 10 100 nA
Gate Driver
tr Gate Driver Output Rise Time CL = 3300pF (Note 5), INTVCC = 7.5V 22 ns tf Gate Driver Output Fall Time CL = 3300pF (Note 5), INTVCC = 7.5V 20 ns Gate Output Low (VOL) 0.05 V Gate Output High (VOH) INTVCC V –0.05
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LT3758/LT3758A are tested in a feedback loop which servos may cause permanent damage to the device. Exposure to any Absolute VFBX to the reference voltages (1.6V and –0.8V) with the VC pin forced Maximum Rating condition for extended periods may affect device to 1.3V. reliability and lifetime.
Note 4:
FBX overvoltage lockout is measured at VFBX(OVERVOLTAGE) relative
Note 2:
The LT3758E/LT3758AE are guaranteed to meet performance to regulated VFBX(REG). specifications from the 0°C to 125°C junction temperature. Specifications
Note 5:
Rise and fall times are measured at 10% and 90% levels. over the –40°C to 125°C operating junction temperature range are
Note 6:
SHDN/UVLO = 1.33V when V assured by design, characterization and correlation with statistical process IN = 5.5V. controls. The LT3758I/LT3758AI are guaranteed over the full –40°C to
Note 7:
For VIN below 6V, the SHDN/UVLO pin must not exceed VIN. 125°C operating junction temperature range. The LT3758H/LT3758AH are
Note 8:
The LT3758/LT3758A include overtemperature protection that guaranteed over the full –40°C to 150°C operating junction temperature is intended to protect the device during momentary overload conditions. range. High junction temperatures degrade operating lifetimes. Operating Junction temperature will exceed the maximum operating junction lifetime is derated at junction temperatures greater than 125°C. The temperature when overtemperature protection is active. Continuous LT3758MP/LT3758AMP are 100% tested and guaranteed over the full operation above the specified maximum operating junction temperature –55°C to 150°C operating junction temperature range. may impair device reliability. Rev F 4 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Applications Related Parts Typical Applications Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
