Datasheet LT8705 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | 80V VIN and VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller |
| 页数 / 页 | 44 / 8 — Typical perForMance characTerisTics TA = 25°C unless otherwise specified. … |
| 文件格式/大小 | PDF / 508 Kb |
| 文件语言 | 英语 |
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Minimum Inductor Current Sense
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LT8705
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Minimum Inductor Current Sense INTVCC Line Regulation INTVCC Line Regulation Voltage in Forced Continuous Mode (EXTVCC = 0V) (VIN = 12V)
0 7.0 7.0 –20 6.5 BUCK REGION –40 6.0 6.5 EXTV –60 CC RISING (V) (V) CC 5.5 CC –80 EXTVCC FALLING INTV INTV –|CSP-CSN| (mV) 5.0 6.0 –100 BOOST REGION –120 4.5 –140 4.0 5.5 0 20 40 60 80 100 4 6 8 10 12 14 16 18 20 4 6 8 10 12 M2 OR M3 DUTY CYCLE (%) VIN (V) EXTVCC (V) 8705 G10 8705 G11 8705 G12
VIN Supply Current vs Voltage Maximum VC vs SS (Not Switching) IMON Output Currents
2.0 3.5 200 TJ = 25°C GATEVCC CONNECTED TO INTVCC 1.8 175 BOOST AND 3.0 1.6 BUCK BUCK-BOOST REGIONS REGION 150 1.4 2.5 125 (V) C 1.2 2.0 100 1.0 (mA) I IN 1.5 75 0.8 MAXIMUM V 50 0.6 1.0 IMON_OUT, IMON_IN (µA) 0.4 25 0.5 125°C 0.2 25°C 0 –40°C 0 0 –25 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 5 15 25 35 45 55 65 75 –100 –50 0 50 100 150 200 SS (V) VIN (V) CSPIN-CSNIN (mV) CSPOUT-CSNOUT (mV) 8705 G13 8705 G14 8705 G15
LDO33 Pin Regulation SHDN and SWEN Pin Thresholds CLKOUT Duty Cycle (ILDO33 = 1mA) vs Temperature
100 3.5 1.30 1.28 80 1.26 3.0 1.24 60 1.22 RISING 2.5 1.20 LDO (V) 40 1.18 FALLING DUTY CYCLE (%) 1.16 2.0 20 125°C PIN THRESHOLD VOLTAGE (V) 1.14 25°C 1.12 SHDN –40°C SWEN 0 1.5 1.10 –50 –25 0 25 50 75 100 125 150 2.5 3 3.5 4 4.5 5 5.5 6 –55 –35 –15 5 25 45 65 85 105 125 145 TEMPERATURE (°C) INTVCC (V) TEMPERATURE (°C) 8705 G16 8705 G17 8705 G18 8705ff 8 For more information www.linear.com/LT8705 Document Outline Features Description Applications 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
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Minimum Inductor Current Sense INTVCC Line Regulation INTVCC Line Regulation Voltage in Forced Continuous Mode (EXTVCC = 0V) (VIN = 12V)
0 7.0 7.0 –20 6.5 BUCK REGION –40 6.0 6.5 EXTV –60 CC RISING (V) (V) CC 5.5 CC –80 EXTVCC FALLING INTV INTV –|CSP-CSN| (mV) 5.0 6.0 –100 BOOST REGION –120 4.5 –140 4.0 5.5 0 20 40 60 80 100 4 6 8 10 12 14 16 18 20 4 6 8 10 12 M2 OR M3 DUTY CYCLE (%) VIN (V) EXTVCC (V) 8705 G10 8705 G11 8705 G12
VIN Supply Current vs Voltage Maximum VC vs SS (Not Switching) IMON Output Currents
2.0 3.5 200 TJ = 25°C GATEVCC CONNECTED TO INTVCC 1.8 175 BOOST AND 3.0 1.6 BUCK BUCK-BOOST REGIONS REGION 150 1.4 2.5 125 (V) C 1.2 2.0 100 1.0 (mA) I IN 1.5 75 0.8 MAXIMUM V 50 0.6 1.0 IMON_OUT, IMON_IN (µA) 0.4 25 0.5 125°C 0.2 25°C 0 –40°C 0 0 –25 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 5 15 25 35 45 55 65 75 –100 –50 0 50 100 150 200 SS (V) VIN (V) CSPIN-CSNIN (mV) CSPOUT-CSNOUT (mV) 8705 G13 8705 G14 8705 G15
LDO33 Pin Regulation SHDN and SWEN Pin Thresholds CLKOUT Duty Cycle (ILDO33 = 1mA) vs Temperature
100 3.5 1.30 1.28 80 1.26 3.0 1.24 60 1.22 RISING 2.5 1.20 LDO (V) 40 1.18 FALLING DUTY CYCLE (%) 1.16 2.0 20 125°C PIN THRESHOLD VOLTAGE (V) 1.14 25°C 1.12 SHDN –40°C SWEN 0 1.5 1.10 –50 –25 0 25 50 75 100 125 150 2.5 3 3.5 4 4.5 5 5.5 6 –55 –35 –15 5 25 45 65 85 105 125 145 TEMPERATURE (°C) INTVCC (V) TEMPERATURE (°C) 8705 G16 8705 G17 8705 G18 8705ff 8 For more information www.linear.com/LT8705 Document Outline Features Description Applications 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