Datasheet LT8705A (Analog Devices) - 8
| Hersteller | Analog Devices |
| Beschreibung | 80V VIN and VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller |
| Seiten / Seite | 44 / 8 — Typical perForMance characTerisTics TA = 25°C unless otherwise specified. … |
| Dateiformat / Größe | PDF / 657 Kb |
| Dokumentensprache | Englisch |
Typical perForMance characTerisTics TA = 25°C unless otherwise specified. Minimum Inductor Current Sense
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LT8705A
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 EXTVCC RISING –60 (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) 8705A G10 8705A G11 8705A G12
VIN Supply Current vs Voltage Maximum VC vs SS (Not Switching) IMON Output Currents
2.0 3.5 200 TJ = 25°C GATEV 1.8 CC CONNECTED TO INTVCC 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 75 0.8 1.5 MAXIMUM V 0.6 50 1.0 0.4 IMON_OUT, IMON_IN (µA) 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) 8705A G13 8705A G14 8705A 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) 8705A G16 8705A G17 8705A G18 8705af 8 For more information www.linear.com/LT8705A 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 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 EXTVCC RISING –60 (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) 8705A G10 8705A G11 8705A G12
VIN Supply Current vs Voltage Maximum VC vs SS (Not Switching) IMON Output Currents
2.0 3.5 200 TJ = 25°C GATEV 1.8 CC CONNECTED TO INTVCC 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 75 0.8 1.5 MAXIMUM V 0.6 50 1.0 0.4 IMON_OUT, IMON_IN (µA) 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) 8705A G13 8705A G14 8705A 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) 8705A G16 8705A G17 8705A G18 8705af 8 For more information www.linear.com/LT8705A 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 Typical Application Related Parts