Datasheet LT8709 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Negative Input Synchronous Multi-Topology DC/DC Controller |
| Pages / Page | 48 / 3 — ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 802 Kb |
| Document Language | English |
ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LT8709
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications for each channel are at TA = 25°C. VGND – V–VIN = 12V, VEN/FBIN – V–VIN = 12V, VBIAS – V–VIN = 12V, unless otherwise noted. Pin voltages have the following relations: FBY is relative to the GND pin, TG and INTVEE to the BIAS pin, and all other pins to the –VIN pin, unless otherwise stated. Pin currents have the following relations: positive current is denoted as current flowing into the pin; negative current is denoted as current flowing out of the pin, unless otherwise stated. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Input Voltage VGND – V–VIN OR VBIAS – V–VIN l 4.25 4.5 V VGND – V–VIN, if VBIAS – V–VIN ≥ 4.5V 0 V Quiescent Current, IGND, VBIAS – V–VIN = 8V, VISN – V–VIN = 8V 4 5.5 mA Not Switching VBIAS – V–VIN = 6.3V, VBIAS – VINTVEE = 6.3V 5.5 7.5 mA Quiescent Current in Shutdown, IGND VEN/FBIN = 0V 0 1 µA EN/FBIN Minimum Input Voltage High, EN/FBIN Rising l 1.64 1.7 1.76 V Releases SS EN/FBIN Minimum Input Voltage High, EN/FBIN Rising l 1.22 1.3 1.38 V Chip-On but SS Held Low EN/FBIN Falling l 1.18 1.26 1.34 V EN/FBIN Minimum Input Voltage High 44 mV Hysteresis EN/FBIN Input Voltage Low Shutdown Mode l 0.3 V EN/FBIN Pin Bias Current VEN/FBIN = 3V 44 60 µA VEN/FBIN = 1.7V 14 19.5 25 µA VEN/FBIN = 1.6V 13 17.5 22.5 µA VEN/FBIN = 0V 0 0.1 µA SS Charge Current VSS = 50mV, Current Flowing Out of SS Pin l 7 10.1 13.8 µA SS Low Detection Voltage Part Exiting Undervoltage Lockout l 18 50 82 mV SS Hi Detection Voltage SS Rising 1.5 1.8 2.1 V SS Falling 1.3 1.7 2.05 V SS Hi Detection Hysteresis 100 mV
Low Dropout Regulators, INTVCC and INTVEE
INTVCC Voltage IINTVCC = 10mA l 6.2 6.3 6.4 V INTVCC Undervoltage Lockout INTVCC Rising l 3.88 4 4.12 V INTVCC Falling l 3.5 3.73 3.95 V INTVCC Undervoltage Lockout Hysteresis 270 mV INTVCC Dropout Voltage, VGND – V–VIN = 6V, VBIAS – V–VIN = 0V, IINTVCC = 10mA 255 mV VGND – INTVCC VGND – V–VIN = 0V, VBIAS – V–VIN = 6V, IINTVCC = 10mA 280 mV INTVCC Load Regulation VGND – V–VIN = 0V, IINTVCC = 0mA to 80mA –0.44 –2 % VBIAS – V–VIN = 0V, IINTVCC = 0mA to 40mA –0.34 –2 % INTVCC Line Regulation 10V ≤ VGND – V–VIN ≤ 80V, VBIAS – V–VIN = 0V, IINTVCC = 10mA –0.003 –0.03 %/V 10V ≤ VBIAS – V–VIN ≤ 80V, VGND – V–VIN = 0V, IINTVCC = 10mA –0.006 –0.03 %/V INTVCC Maximum External Load Current 5 mA INTVEE Voltage, VBIAS – VINTVEE IINTVEE = 10mA l 6.03 6.18 6.33 V INTVEE Undervoltage Lockout, VBIAS – VINTVEE Rising l 3.24 3.42 3.6 V VBIAS – VINTVEE VBIAS – VINTVEE Falling l 2.94 3.22 3.48 V INTVEE Undervoltage Lockout 200 mV Hysteresis, VBIAS – VINTVEE INTVEE Dropout Voltage, VINTVEE – V–VIN VBIAS – V–VIN = 6V, IINTVEE = 10mA 0.75 V 8709fa For more information www.linear.com/LT8709 3
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications for each channel are at TA = 25°C. VGND – V–VIN = 12V, VEN/FBIN – V–VIN = 12V, VBIAS – V–VIN = 12V, unless otherwise noted. Pin voltages have the following relations: FBY is relative to the GND pin, TG and INTVEE to the BIAS pin, and all other pins to the –VIN pin, unless otherwise stated. Pin currents have the following relations: positive current is denoted as current flowing into the pin; negative current is denoted as current flowing out of the pin, unless otherwise stated. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Input Voltage VGND – V–VIN OR VBIAS – V–VIN l 4.25 4.5 V VGND – V–VIN, if VBIAS – V–VIN ≥ 4.5V 0 V Quiescent Current, IGND, VBIAS – V–VIN = 8V, VISN – V–VIN = 8V 4 5.5 mA Not Switching VBIAS – V–VIN = 6.3V, VBIAS – VINTVEE = 6.3V 5.5 7.5 mA Quiescent Current in Shutdown, IGND VEN/FBIN = 0V 0 1 µA EN/FBIN Minimum Input Voltage High, EN/FBIN Rising l 1.64 1.7 1.76 V Releases SS EN/FBIN Minimum Input Voltage High, EN/FBIN Rising l 1.22 1.3 1.38 V Chip-On but SS Held Low EN/FBIN Falling l 1.18 1.26 1.34 V EN/FBIN Minimum Input Voltage High 44 mV Hysteresis EN/FBIN Input Voltage Low Shutdown Mode l 0.3 V EN/FBIN Pin Bias Current VEN/FBIN = 3V 44 60 µA VEN/FBIN = 1.7V 14 19.5 25 µA VEN/FBIN = 1.6V 13 17.5 22.5 µA VEN/FBIN = 0V 0 0.1 µA SS Charge Current VSS = 50mV, Current Flowing Out of SS Pin l 7 10.1 13.8 µA SS Low Detection Voltage Part Exiting Undervoltage Lockout l 18 50 82 mV SS Hi Detection Voltage SS Rising 1.5 1.8 2.1 V SS Falling 1.3 1.7 2.05 V SS Hi Detection Hysteresis 100 mV
Low Dropout Regulators, INTVCC and INTVEE
INTVCC Voltage IINTVCC = 10mA l 6.2 6.3 6.4 V INTVCC Undervoltage Lockout INTVCC Rising l 3.88 4 4.12 V INTVCC Falling l 3.5 3.73 3.95 V INTVCC Undervoltage Lockout Hysteresis 270 mV INTVCC Dropout Voltage, VGND – V–VIN = 6V, VBIAS – V–VIN = 0V, IINTVCC = 10mA 255 mV VGND – INTVCC VGND – V–VIN = 0V, VBIAS – V–VIN = 6V, IINTVCC = 10mA 280 mV INTVCC Load Regulation VGND – V–VIN = 0V, IINTVCC = 0mA to 80mA –0.44 –2 % VBIAS – V–VIN = 0V, IINTVCC = 0mA to 40mA –0.34 –2 % INTVCC Line Regulation 10V ≤ VGND – V–VIN ≤ 80V, VBIAS – V–VIN = 0V, IINTVCC = 10mA –0.003 –0.03 %/V 10V ≤ VBIAS – V–VIN ≤ 80V, VGND – V–VIN = 0V, IINTVCC = 10mA –0.006 –0.03 %/V INTVCC Maximum External Load Current 5 mA INTVEE Voltage, VBIAS – VINTVEE IINTVEE = 10mA l 6.03 6.18 6.33 V INTVEE Undervoltage Lockout, VBIAS – VINTVEE Rising l 3.24 3.42 3.6 V VBIAS – VINTVEE VBIAS – VINTVEE Falling l 2.94 3.22 3.48 V INTVEE Undervoltage Lockout 200 mV Hysteresis, VBIAS – VINTVEE INTVEE Dropout Voltage, VINTVEE – V–VIN VBIAS – V–VIN = 6V, IINTVEE = 10mA 0.75 V 8709fa For more information www.linear.com/LT8709 3
