Datasheet LT8390 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum |
| 页数 / 页 | 32 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 1.2 Mb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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LT8390
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, VEN/UVLO = 1.5V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Supply
VIN Operating Voltage Range l 4 60 V VIN Quiescent Current VEN/UVLO = 0.3V 1 2 µA VEN/UVLO = 1.1V 270 µA Not Switching 2.1 2.8 mA VOUT Voltage Range l 0 60 V VOUT Quiescent Current VEN/UVLO = 0.3V, VOUT = 12V 0.1 0.5 µA VEN/UVLO = 1.1V, VOUT = 12V 0.1 0.5 µA Not Switching, VOUT = 12V 20 40 60 µA
Linear Regulators
INTVCC Regulation Voltage IINTVCC = 20mA 4.85 5.0 5.15 V INTVCC Load Regulation IINTVCC = 0mA to 80mA 1 4 % INTVCC Line Regulation IINTVCC = 20mA, VIN = 6V to 60V 1 4 % INTVCC Current Limit VINTVCC = 4.5V 80 110 160 mA INTVCC Dropout Voltage (VIN – INTVCC) IINTVCC = 20mA, VIN = 4V 160 mV INTVCC Undervoltage Lockout Threshold Falling 3.44 3.54 3.64 V INTVCC Undervoltage Lockout Hysteresis 0.24 V VREF Regulation Voltage IVREF = 100µA l 1.97 2.00 2.03 V VREF Load Regulation IVREF = 0mA to 1mA 0.4 1 % VREF Line Regulation IVREF = 100µA, VIN = 4V to 60V 0.1 0.2 % VREF Current Limit VREF = 1.8V 2 2.5 3.2 mA VREF Undervoltage Lockout Threshold Falling 1.78 1.84 1.90 V VREF Undervoltage Lockout Hysteresis 50 mV
Control Inputs/Outputs
EN/UVLO Shutdown Threshold l 0.3 0.6 1.0 V EN/UVLO Enable Threshold Falling l 1.196 1.220 1.244 V EN/UVLO Enable Hysteresis 13 mV EN/UVLO Hysteresis Current VEN/UVLO = 0.3V –0.1 0 0.1 µA VEN/UVLO = 1.1V 2.2 2.5 2.8 µA VEN/UVLO = 1.3V –0.1 0 0.1 µA CTRL Input Bias Current VCTRL = 0.75V, Current Out of Pin 0 20 50 nA CTRL Latch-Off Threshold Falling l 285 300 315 mV CTRL Latch-Off Hysteresis 25 mV
Load Switch Driver
LOADEN Threshold Rising l 1.3 1.4 1.5 V LOADEN Hysteresis 220 mV Minimum VOUT for LOADTG to be On VLOADEN = 5V 2.4 3 V LOADTG On Voltage V(VOUT-LOADTG) VOUT = 12V 4.6 5 5.4 V LOADTG Off Voltage V(VOUT-LOADTG) VOUT = 12V –0.1 0 0.1 V LOADEN to LOADTG Turn On Propagation Delay CLOADTG = 3.3nF to VOUT, 50% to 50% 90 ns LOADEN to LOADTG Turn Off Propagation Delay CLOADTG = 3.3nF to VOUT, 50% to 50% 40 ns LOADTG Turn On Fall Time CLOADTG = 3.3nF to VOUT, 10% to 90% 300 ns LOADTG Turn Off Rise Time CLOADTG = 3.3nF to VOUT, 90% to 10% 10 ns 8390fa For more information www.linear.com/LT8390 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram 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 (Note 2). VIN = 12V, VEN/UVLO = 1.5V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Supply
VIN Operating Voltage Range l 4 60 V VIN Quiescent Current VEN/UVLO = 0.3V 1 2 µA VEN/UVLO = 1.1V 270 µA Not Switching 2.1 2.8 mA VOUT Voltage Range l 0 60 V VOUT Quiescent Current VEN/UVLO = 0.3V, VOUT = 12V 0.1 0.5 µA VEN/UVLO = 1.1V, VOUT = 12V 0.1 0.5 µA Not Switching, VOUT = 12V 20 40 60 µA
Linear Regulators
INTVCC Regulation Voltage IINTVCC = 20mA 4.85 5.0 5.15 V INTVCC Load Regulation IINTVCC = 0mA to 80mA 1 4 % INTVCC Line Regulation IINTVCC = 20mA, VIN = 6V to 60V 1 4 % INTVCC Current Limit VINTVCC = 4.5V 80 110 160 mA INTVCC Dropout Voltage (VIN – INTVCC) IINTVCC = 20mA, VIN = 4V 160 mV INTVCC Undervoltage Lockout Threshold Falling 3.44 3.54 3.64 V INTVCC Undervoltage Lockout Hysteresis 0.24 V VREF Regulation Voltage IVREF = 100µA l 1.97 2.00 2.03 V VREF Load Regulation IVREF = 0mA to 1mA 0.4 1 % VREF Line Regulation IVREF = 100µA, VIN = 4V to 60V 0.1 0.2 % VREF Current Limit VREF = 1.8V 2 2.5 3.2 mA VREF Undervoltage Lockout Threshold Falling 1.78 1.84 1.90 V VREF Undervoltage Lockout Hysteresis 50 mV
Control Inputs/Outputs
EN/UVLO Shutdown Threshold l 0.3 0.6 1.0 V EN/UVLO Enable Threshold Falling l 1.196 1.220 1.244 V EN/UVLO Enable Hysteresis 13 mV EN/UVLO Hysteresis Current VEN/UVLO = 0.3V –0.1 0 0.1 µA VEN/UVLO = 1.1V 2.2 2.5 2.8 µA VEN/UVLO = 1.3V –0.1 0 0.1 µA CTRL Input Bias Current VCTRL = 0.75V, Current Out of Pin 0 20 50 nA CTRL Latch-Off Threshold Falling l 285 300 315 mV CTRL Latch-Off Hysteresis 25 mV
Load Switch Driver
LOADEN Threshold Rising l 1.3 1.4 1.5 V LOADEN Hysteresis 220 mV Minimum VOUT for LOADTG to be On VLOADEN = 5V 2.4 3 V LOADTG On Voltage V(VOUT-LOADTG) VOUT = 12V 4.6 5 5.4 V LOADTG Off Voltage V(VOUT-LOADTG) VOUT = 12V –0.1 0 0.1 V LOADEN to LOADTG Turn On Propagation Delay CLOADTG = 3.3nF to VOUT, 50% to 50% 90 ns LOADEN to LOADTG Turn Off Propagation Delay CLOADTG = 3.3nF to VOUT, 50% to 50% 40 ns LOADTG Turn On Fall Time CLOADTG = 3.3nF to VOUT, 10% to 90% 300 ns LOADTG Turn Off Rise Time CLOADTG = 3.3nF to VOUT, 90% to 10% 10 ns 8390fa For more information www.linear.com/LT8390 3 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts