Datasheet LT3752, LT3752-1 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller |
| 页数 / 页 | 52 / 8 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 修订版 | C |
| 文件格式/大小 | PDF / 2.3 Mb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
该数据表的模型线
- LT3752EFE#PBF LT3752EFE#TRPBF LT3752EFE#WPBF LT3752EFE#WTRPBF LT3752EFE-1#PBF LT3752EFE-1#TRPBF LT3752EFE-1#WPBF LT3752EFE-1#WTRPBF LT3752HFE#PBF LT3752HFE#TRPBF LT3752HFE#WPBF LT3752HFE#WTRPBF LT3752HFE-1#PBF LT3752HFE-1#TRPBF LT3752HFE-1#WPBF LT3752HFE-1#WTRPBF LT3752HFE-2#WPBF LT3752HFE-2#WTRPBF LT3752IFE#PBF LT3752IFE#TRPBF LT3752IFE#WPBF LT3752IFE#WTRPBF LT3752IFE-1#PBF LT3752IFE-1#TRPBF LT3752IFE-1#WPBF LT3752IFE-1#WTRPBF LT3752MPFE#PBF LT3752MPFE#TRPBF LT3752MPFE-1#PBF LT3752MPFE-1#TRPBF
文件文字版本
LT3752/LT3752-1
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, UVLO_VSEC = 2.5V. PARAMETER CONDITIONS MIN TYP MAX UNITS HOUT Driver (Housekeeping Controller)
HOUT Rise Time CL = 1nF (Note 5), INTVCC = 12V 13 ns HOUT Fall Time CL = 1nF (Note 5), INTVCC = 12V 12 ns HOUT Low Level 0.1 V HOUT High Level LT3752 INTVCC = 12V 11.9 V LT3752-1 11.9 V HOUT Low Level in Shutdown UVLO_VSEC = 0V, INTVCC = 12V, IHOUT = 1mA 0.25 V Into the Pin HOUT Maximum Duty Cycle HCOMP = 2.7V, RT = 24.9k 90 95 % HOUT Minimum ON Time CL = 1nF (Note 9), INTVCC = 12V 350 ns
Soft-Start (HSS) (Housekeeping Controller)
HSS (Internal) Ramp Time (tHSS) HCOMP SW ≥ HCOMP VOH – 0.1V 2.2 4 ms
Oscillator (Housekeeping Controller)
Frequency (fHOUT) (fOSC Folded Back) (LT3752) HFB = 0.8V, RT = 24.9k, SS1 = 0V 55 65 75 kHz Frequency (fHOUT) (fOSC Folded Back) (LT3752-1) HFB = 0.8V, RT = 24.9k, SS1 = 0V 119 141 163 kHz Frequency (fHOUT) (Full-Scale fOSC) HFB = 1.15V, HCOMP = 2.7V l 279 300 321 kHz
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
Guaranteed by correlation to static test. may cause permanent damage to the device. Exposure to any Absolute
Note 7:
VIN start-up current is measured at VIN = VIN(ON) – 0.25V and then Maximum Rating condition for extended periods may affect device scaled by 1.18× to correlate to worst-case VIN current required for part reliability and lifetime. start-up at VIN = VIN(ON).
Note 2:
The LT3752EFE/LT3752EFE-1 are guaranteed to meet performance
Note 8:
Guaranteed by design. specifications from 0°C to 125°C junction temperature. Specifications
Note 9:
ON times are measured between rising and falling edges at 50% of over the –40°C to 125°C operating junction temperature range are gate driver supply voltage. assured by design, characterization and correlation with statistical process controls. The LT3752IFE/LT3752IFE-1 are guaranteed to meet performance
Note 10:
Current flows out of pin. specifications from –40°C to 125°C junction temperature. The LT3752HFE/
Note 11:
Guaranteed by correlation to RTAS = 73.2k test. LT3752HFE-1 are guaranteed to meet performance specifications from
Note 12:
tOA timing guaranteed by design based on correlation to –40°C to 150°C junction temperature. The LT3752MPFE/LT3752MPFE-1 measured tAO timing. are tested and guaranteed to meet performance specifications from –55°C
Note 13:
Guaranteed by correlation to RTAO = 44.2k test. to 150°C junction temperature.
Note 14:
Guaranteed by correlation to RTOS = 14.7k test.
Note 3:
For maximum operating ambient temperature, see the Thermal
Note 15:
A 2µs one-shot of 20µA from the UVLO_V Calculations section in the Applications Information section. SEC pin allows communication between ICs to begin shutdown (useful when stacking
Note 4:
SYNC minimum and maximum thresholds are guaranteed by supplies for more power ( = inputs in parallel/outputs in series)). The SYNC frequency range test using a clock input with guard banded SYNC current is tested in a static test mode. The 2µs one-shot is guaranteed by levels of 0.7V low level and 1.7V high level. design.
Note 5:
Rise and fall times are measured between 10% and 90% of gate
Note 16:
Guaranteed by correlation to RTBLNK = 14.7k test. driver supply voltage. Rev. C 8 For more information www.analog.com Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Timing Diagrams 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. VIN = 12V, UVLO_VSEC = 2.5V. PARAMETER CONDITIONS MIN TYP MAX UNITS HOUT Driver (Housekeeping Controller)
HOUT Rise Time CL = 1nF (Note 5), INTVCC = 12V 13 ns HOUT Fall Time CL = 1nF (Note 5), INTVCC = 12V 12 ns HOUT Low Level 0.1 V HOUT High Level LT3752 INTVCC = 12V 11.9 V LT3752-1 11.9 V HOUT Low Level in Shutdown UVLO_VSEC = 0V, INTVCC = 12V, IHOUT = 1mA 0.25 V Into the Pin HOUT Maximum Duty Cycle HCOMP = 2.7V, RT = 24.9k 90 95 % HOUT Minimum ON Time CL = 1nF (Note 9), INTVCC = 12V 350 ns
Soft-Start (HSS) (Housekeeping Controller)
HSS (Internal) Ramp Time (tHSS) HCOMP SW ≥ HCOMP VOH – 0.1V 2.2 4 ms
Oscillator (Housekeeping Controller)
Frequency (fHOUT) (fOSC Folded Back) (LT3752) HFB = 0.8V, RT = 24.9k, SS1 = 0V 55 65 75 kHz Frequency (fHOUT) (fOSC Folded Back) (LT3752-1) HFB = 0.8V, RT = 24.9k, SS1 = 0V 119 141 163 kHz Frequency (fHOUT) (Full-Scale fOSC) HFB = 1.15V, HCOMP = 2.7V l 279 300 321 kHz
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
Guaranteed by correlation to static test. may cause permanent damage to the device. Exposure to any Absolute
Note 7:
VIN start-up current is measured at VIN = VIN(ON) – 0.25V and then Maximum Rating condition for extended periods may affect device scaled by 1.18× to correlate to worst-case VIN current required for part reliability and lifetime. start-up at VIN = VIN(ON).
Note 2:
The LT3752EFE/LT3752EFE-1 are guaranteed to meet performance
Note 8:
Guaranteed by design. specifications from 0°C to 125°C junction temperature. Specifications
Note 9:
ON times are measured between rising and falling edges at 50% of over the –40°C to 125°C operating junction temperature range are gate driver supply voltage. assured by design, characterization and correlation with statistical process controls. The LT3752IFE/LT3752IFE-1 are guaranteed to meet performance
Note 10:
Current flows out of pin. specifications from –40°C to 125°C junction temperature. The LT3752HFE/
Note 11:
Guaranteed by correlation to RTAS = 73.2k test. LT3752HFE-1 are guaranteed to meet performance specifications from
Note 12:
tOA timing guaranteed by design based on correlation to –40°C to 150°C junction temperature. The LT3752MPFE/LT3752MPFE-1 measured tAO timing. are tested and guaranteed to meet performance specifications from –55°C
Note 13:
Guaranteed by correlation to RTAO = 44.2k test. to 150°C junction temperature.
Note 14:
Guaranteed by correlation to RTOS = 14.7k test.
Note 3:
For maximum operating ambient temperature, see the Thermal
Note 15:
A 2µs one-shot of 20µA from the UVLO_V Calculations section in the Applications Information section. SEC pin allows communication between ICs to begin shutdown (useful when stacking
Note 4:
SYNC minimum and maximum thresholds are guaranteed by supplies for more power ( = inputs in parallel/outputs in series)). The SYNC frequency range test using a clock input with guard banded SYNC current is tested in a static test mode. The 2µs one-shot is guaranteed by levels of 0.7V low level and 1.7V high level. design.
Note 5:
Rise and fall times are measured between 10% and 90% of gate
Note 16:
Guaranteed by correlation to RTBLNK = 14.7k test. driver supply voltage. Rev. C 8 For more information www.analog.com Document Outline Features Applications Typical Application Description Table of Contents Absolute Maximum Ratings Order Information Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts