Datasheet LTC7818 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 40V, Low IQ, 3MHz, Triple Output Buck/Buck/Boost Synchronous Controller |
| Pages / Page | 44 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS. EXTV. EXT CC. V Switchover and … |
| File Format / Size | PDF / 3.1 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. EXTV. EXT CC. V Switchover and INTVCC. INTV. INT CC. V Undervoltage Lockout
Text Version of Document
LTC7818
TYPICAL PERFORMANCE CHARACTERISTICS EXTV EXT CC V Switchover and INTVCC INTV INT CC V Undervoltage Lockout CC Undervoltage Lockout INTV CC Switchover and INTVCC INT CC V Voltage vs Current Voltage vs T V emperature oltage vs T Thresholds vs Temperature CC Voltage vs Current Thresholds vs T
5.4 5.4 4.4 VBIAS = 12V 5.2 5.2 4.3 INTV EXTV CC Voltage CC = 0V UVLO RISING 5.0 4.2 EXTVCC = 6V TAGE (V) 5.0 4.8 TAGE (V) VOL 4.1 EXTVCC = 5V V CC 4.8 VOL 4.6 EXTVCC Rising 4.0 V CC UVLO FALLING INT 4.6 OR EXT 4.4 UVLO THRESHOLD (V) 3.9 V CC EXTVCC Falling 4.2 INT 4.4 3.8 4.0 4.2 3.7 0 50 100 150 200 250 300 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 INTVCC LOAD CURRENT (mA) TEMPERATURE (oC) TEMPERATURE (oC) 7818 G28 7818 G29 7818 G30
RUN Pin Thresholds VBIAS V Quiescent Current BIAS Shutdown Current Shutdown Current vs Temperature vs T vs Temperature vs T vs VBIAS Input V vs Input V oltage oltage
1.26 40 8.0 Rising VBIAS = 12V 1.24 Falling 35 7.0 1.22 30 6.0 1.20 1.18 25 5.0 EXTVCC = 0V, SENSE1–=0V 1.16 20 4.0 1.14 CURRENT (μA) 15 CURRENT (μA) 3.0 1.12 EXTVCC = 0V, SENSE1–=3.3V RUN THRESHOLD (V) V BIAS 10 V BIAS 2.0 1.10 1.08 5 1.0 EXTVCC = 12V, SENSE1–=3.3V 1.06 0 0 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 0 5 10 15 20 25 30 35 40 TEMPERATURE (oC) TEMPERATURE (oC) VBIAS INPUT VOLTAGE (V) 7818 G31 7818 G32 7818 G33
BOOST3 Charge Pump Output BOOST3 Charge Pump Output BOOST3 Charge Pump Output BOOST3 Charge Pump Output TRACK/SS Pull-Up Current TRACK/SS Pull–Up Current Current vs Frequency Current vs SW3 Voltage Current vs SW3 V vs Temperature
100 100 14.0 BOOST3 = 16V BOOST3–SW3 = 4V 90 SW3 = 12V 90 FREQ = 0V 80 80 13.5 70 70 13.0 60 60 50 50 12.5 40 40 30 30 12.0 TRACK/SS CURRENT (µA) CHARGE PUMP CURRENT (μA) 20 150C CHARGE PUMP CURRENT (μA) 20 150C 11.5 10 –55C 10 –55C 25C 25C 0 0 11.0 0 500 1000 1500 2000 2500 3000 0 5 10 15 20 25 30 35 –55 –25 5 35 65 95 125 155 FREQUENCY (kHz) SW3 VOLTAGE (V) TEMPERATURE (oC) 7818 G34 7818 G35 7818 G36 Rev 0 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS EXTV EXT CC V Switchover and INTVCC INTV INT CC V Undervoltage Lockout CC Undervoltage Lockout INTV CC Switchover and INTVCC INT CC V Voltage vs Current Voltage vs T V emperature oltage vs T Thresholds vs Temperature CC Voltage vs Current Thresholds vs T
5.4 5.4 4.4 VBIAS = 12V 5.2 5.2 4.3 INTV EXTV CC Voltage CC = 0V UVLO RISING 5.0 4.2 EXTVCC = 6V TAGE (V) 5.0 4.8 TAGE (V) VOL 4.1 EXTVCC = 5V V CC 4.8 VOL 4.6 EXTVCC Rising 4.0 V CC UVLO FALLING INT 4.6 OR EXT 4.4 UVLO THRESHOLD (V) 3.9 V CC EXTVCC Falling 4.2 INT 4.4 3.8 4.0 4.2 3.7 0 50 100 150 200 250 300 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 INTVCC LOAD CURRENT (mA) TEMPERATURE (oC) TEMPERATURE (oC) 7818 G28 7818 G29 7818 G30
RUN Pin Thresholds VBIAS V Quiescent Current BIAS Shutdown Current Shutdown Current vs Temperature vs T vs Temperature vs T vs VBIAS Input V vs Input V oltage oltage
1.26 40 8.0 Rising VBIAS = 12V 1.24 Falling 35 7.0 1.22 30 6.0 1.20 1.18 25 5.0 EXTVCC = 0V, SENSE1–=0V 1.16 20 4.0 1.14 CURRENT (μA) 15 CURRENT (μA) 3.0 1.12 EXTVCC = 0V, SENSE1–=3.3V RUN THRESHOLD (V) V BIAS 10 V BIAS 2.0 1.10 1.08 5 1.0 EXTVCC = 12V, SENSE1–=3.3V 1.06 0 0 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 0 5 10 15 20 25 30 35 40 TEMPERATURE (oC) TEMPERATURE (oC) VBIAS INPUT VOLTAGE (V) 7818 G31 7818 G32 7818 G33
BOOST3 Charge Pump Output BOOST3 Charge Pump Output BOOST3 Charge Pump Output BOOST3 Charge Pump Output TRACK/SS Pull-Up Current TRACK/SS Pull–Up Current Current vs Frequency Current vs SW3 Voltage Current vs SW3 V vs Temperature
100 100 14.0 BOOST3 = 16V BOOST3–SW3 = 4V 90 SW3 = 12V 90 FREQ = 0V 80 80 13.5 70 70 13.0 60 60 50 50 12.5 40 40 30 30 12.0 TRACK/SS CURRENT (µA) CHARGE PUMP CURRENT (μA) 20 150C CHARGE PUMP CURRENT (μA) 20 150C 11.5 10 –55C 10 –55C 25C 25C 0 0 11.0 0 500 1000 1500 2000 2500 3000 0 5 10 15 20 25 30 35 –55 –25 5 35 65 95 125 155 FREQUENCY (kHz) SW3 VOLTAGE (V) TEMPERATURE (oC) 7818 G34 7818 G35 7818 G36 Rev 0 10 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts
