Datasheet LTC7862 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 140V High Efficiency Switching Surge Stopper |
| 页数 / 页 | 32 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 1.7 Mb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the specified operating
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LTC7862
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2), VIN = 12V, VRUN = 5V, VEXTVCC = 0V, VDRVUV = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage Range (Note 9) DRVUV = 0V l 4 140 V VOUT Regulated Output Clamp Voltage Set Point 60 V VFB Regulated Feedback Voltage (Note 4); ITH Voltage = 1.2V 0°C to 85°C 0.792 0.800 0.808 V l 0.788 0.800 0.812 V IFB Feedback Current (Note 4) –0.006 ±0.050 µA Feedback Voltage Line Regulation (Note 4) VIN = 4.5V to 150V 0.002 0.02 %/V Feedback Voltage Load Regulation (Note 4) Measured in Servo Loop, ∆ITH Voltage = 1.2V to 0.7V l 0.01 0.1 % (Note 4) Measured in Servo Loop, ∆ITH Voltage = 1.2V to 1.6V l –0.01 –0.1 % gm Transconductance Amplifier gm (Note 4) ITH = 1.2V, Sink/Source 5µA 2 mmho IQ Input DC Supply Current (Note 5) VFB = 0.77V 1.2 mA Shutdown RUN = 0V 10 20 µA UVLO Undervoltage Lockout DRVCC Ramping Up DRVUV = 0V l 4.0 4.2 V DRVUV = INTVCC l 7.5 7.8 V DRVCC Ramping Down DRVUV = 0V l 3.6 3.8 4.0 V DRVUV = INTVCC l 6.4 6.7 7.0 V VRUN ON RUN Pin ON Threshold VRUN Rising l 1.1 1.2 1.3 V VRUN Hyst RUN Pin Hysteresis 80 mV OVLO Overvoltage Lockout Threshold VOVLO Rising l 1.1 1.2 1.3 V OVLO Hyst OVLO Hysteresis 100 mV OVLO Delay 1 µs Feedback Overvoltage Protection Measured at VFB, Relative to Regulated VFB 7 10 13 % ISENSE+ SENSE+ Pin Current ±1 µA ISENSE– SENSE– Pin Current SENSE+ = SENSE– = 28V 900 µA Maximum TG Duty Factor In Dropout 100 % ISS Soft-Start Charge Current VSS = 0V 8 10 12 µA VSENSE(MAX) Maximum Current Sense Threshold VFB = 0.7V, VSENSE– = 28V l 43 50 57 mV Rev 0 For more information www.analog.com 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS TIMING DIAGRAM FUNCTIONAL DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2), VIN = 12V, VRUN = 5V, VEXTVCC = 0V, VDRVUV = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage Range (Note 9) DRVUV = 0V l 4 140 V VOUT Regulated Output Clamp Voltage Set Point 60 V VFB Regulated Feedback Voltage (Note 4); ITH Voltage = 1.2V 0°C to 85°C 0.792 0.800 0.808 V l 0.788 0.800 0.812 V IFB Feedback Current (Note 4) –0.006 ±0.050 µA Feedback Voltage Line Regulation (Note 4) VIN = 4.5V to 150V 0.002 0.02 %/V Feedback Voltage Load Regulation (Note 4) Measured in Servo Loop, ∆ITH Voltage = 1.2V to 0.7V l 0.01 0.1 % (Note 4) Measured in Servo Loop, ∆ITH Voltage = 1.2V to 1.6V l –0.01 –0.1 % gm Transconductance Amplifier gm (Note 4) ITH = 1.2V, Sink/Source 5µA 2 mmho IQ Input DC Supply Current (Note 5) VFB = 0.77V 1.2 mA Shutdown RUN = 0V 10 20 µA UVLO Undervoltage Lockout DRVCC Ramping Up DRVUV = 0V l 4.0 4.2 V DRVUV = INTVCC l 7.5 7.8 V DRVCC Ramping Down DRVUV = 0V l 3.6 3.8 4.0 V DRVUV = INTVCC l 6.4 6.7 7.0 V VRUN ON RUN Pin ON Threshold VRUN Rising l 1.1 1.2 1.3 V VRUN Hyst RUN Pin Hysteresis 80 mV OVLO Overvoltage Lockout Threshold VOVLO Rising l 1.1 1.2 1.3 V OVLO Hyst OVLO Hysteresis 100 mV OVLO Delay 1 µs Feedback Overvoltage Protection Measured at VFB, Relative to Regulated VFB 7 10 13 % ISENSE+ SENSE+ Pin Current ±1 µA ISENSE– SENSE– Pin Current SENSE+ = SENSE– = 28V 900 µA Maximum TG Duty Factor In Dropout 100 % ISS Soft-Start Charge Current VSS = 0V 8 10 12 µA VSENSE(MAX) Maximum Current Sense Threshold VFB = 0.7V, VSENSE– = 28V l 43 50 57 mV Rev 0 For more information www.analog.com 3 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS TIMING DIAGRAM FUNCTIONAL DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS