Datasheet LT8309 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | Secondary-Side Synchronous Rectifier Driver |
| 页数 / 页 | 14 / 3 — e lecTrical characTerisTics The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 232 Kb |
| 文件语言 | 英语 |
e lecTrical characTerisTics The. denotes the specifications which apply over the full operating
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LT8309
e lecTrical 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
Input Voltage Range l 4.5 40 V VCC Quiescent Current Not Switching, INTVCC = 8V 300 345 µA
Comparator
Turn-On Threshold RS = 0Ω l –69 –57 –45 mV Turn-Off Threshold RS = 0Ω 17 21 25 mV l 16 28 mV Drain Voltage Latch Reset RS = 0Ω 1.21 V Minimum Off-Time 75 95 115 ns Minimum On-Time 310 360 410 ns Drain Current Out of Pin l 9.5 10 10.5 µA
INTVCC Linear Regulator
INTVCC Quiescent Current Not Switching, INTVCC = 8V 100 117 µA INTVCC Voltage Range 4.5 10 V INTVCC Regulation Voltage l 6.8 7 7.2 V INTVCC UVLO 4.03 V Dropout (VCC to INTVCC) IINTVCC = –10mA, VIN = 7V 1 1.3 1.6 V Current Limit l 30 42 55 mA
Gate Driver
Turn-On Propagation Delay (tD(ON)) RS = 0Ω, –100mVOD, VDS to VGATE 31 40 ns Turn-Off Propagation Delay (tD(OFF)) RS = 0Ω, –100mVOD, VDS to VGATE 26 36 ns tr GATE Driver Output Rise Time CL = 3300pF 21 ns tf GATE Driver Output Fall Time CL = 3300pF 11 ns Pull-Up Resistance 2.7 Ω Pull-Down Resistance 0.8 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. The LT8309H is guaranteed over the full –40°C to may cause permanent damage to the device. Exposure to any Absolute 150°C operating junction temperature range. High junction temperatures Maximum Rating condition for extended periods may affect device degrade operating lifetimes. Operating lifetime is derated at junction reliability and lifetime. temperatures greater than 125°C.
Note 2:
The LT8309E is guaranteed to meet performance specifications
Note 3:
The LT8309 includes overtemperature protection that is intended from 0°C to 125°C operating junction temperature. Specifications over to protect the device during momentary overload conditions. Junction the –40°C to 125°C operating junction temperature range are assured by temperature will exceed 150°C when overtemperature protection is active. design, characterization and correlation with statistical process controls. Continuous operation above the specified maximum operating junction The LT8309I is guaranteed over the full –40°C to 125°C operating junction temperature may impair device reliability. 8309fa For more information www.linear.com/LT8309 3
e lecTrical 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
Input Voltage Range l 4.5 40 V VCC Quiescent Current Not Switching, INTVCC = 8V 300 345 µA
Comparator
Turn-On Threshold RS = 0Ω l –69 –57 –45 mV Turn-Off Threshold RS = 0Ω 17 21 25 mV l 16 28 mV Drain Voltage Latch Reset RS = 0Ω 1.21 V Minimum Off-Time 75 95 115 ns Minimum On-Time 310 360 410 ns Drain Current Out of Pin l 9.5 10 10.5 µA
INTVCC Linear Regulator
INTVCC Quiescent Current Not Switching, INTVCC = 8V 100 117 µA INTVCC Voltage Range 4.5 10 V INTVCC Regulation Voltage l 6.8 7 7.2 V INTVCC UVLO 4.03 V Dropout (VCC to INTVCC) IINTVCC = –10mA, VIN = 7V 1 1.3 1.6 V Current Limit l 30 42 55 mA
Gate Driver
Turn-On Propagation Delay (tD(ON)) RS = 0Ω, –100mVOD, VDS to VGATE 31 40 ns Turn-Off Propagation Delay (tD(OFF)) RS = 0Ω, –100mVOD, VDS to VGATE 26 36 ns tr GATE Driver Output Rise Time CL = 3300pF 21 ns tf GATE Driver Output Fall Time CL = 3300pF 11 ns Pull-Up Resistance 2.7 Ω Pull-Down Resistance 0.8 Ω
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. The LT8309H is guaranteed over the full –40°C to may cause permanent damage to the device. Exposure to any Absolute 150°C operating junction temperature range. High junction temperatures Maximum Rating condition for extended periods may affect device degrade operating lifetimes. Operating lifetime is derated at junction reliability and lifetime. temperatures greater than 125°C.
Note 2:
The LT8309E is guaranteed to meet performance specifications
Note 3:
The LT8309 includes overtemperature protection that is intended from 0°C to 125°C operating junction temperature. Specifications over to protect the device during momentary overload conditions. Junction the –40°C to 125°C operating junction temperature range are assured by temperature will exceed 150°C when overtemperature protection is active. design, characterization and correlation with statistical process controls. Continuous operation above the specified maximum operating junction The LT8309I is guaranteed over the full –40°C to 125°C operating junction temperature may impair device reliability. 8309fa For more information www.linear.com/LT8309 3