Datasheet LTC7130 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 20V 20A Monolithic Buck Converter with Ultralow DCR Sensing |
| Pages / Page | 36 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 1.5 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Tracking Up and Down with. Current Sense Threshold
Model Line for this Datasheet
Text Version of Document
LTC7130
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Tracking Up and Down with Current Sense Threshold TK/SS External Ramp INTVCC Line Regulation vs ITH Voltage CC
6 40 VTK/SS ILIM = 0V 35 V I TK/SS LIM = 1/4 INTVCC 0.2V/DIV 5 V 30 ILIM = 1/2 INTVCC OUT ILIM = 3/4 INTVCC 25 ILIM = INTVCC VOUT 0.5V/DIV 4 20 TAGE (V) 15 0V VOL 2 10 V CC INT 5 20ms/DIV 7130 G10 VIN = 12V 1 0 VOUT = 1.5V CURRENT SENSE THRESHOLD (mV) 1Ω LOAD –5 0 –10 0 5 10 15 20 0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 INPUT VOLTAGE (V) VITH (V) 7130 G11 7130 G12
Maximum Current Sense Maximum Current Sense Threshold Threshold Voltage vs Feedback TK/SS Pull-Up Current vs Common Mode Voltage Voltage (Current Foldback) vs Temperature
40 40 1.8 35 35 1.6 ILIM = INTVCC ILIM = INTVCC 30 30 1.4 ILIM = 3/4 INTVCC ILIM = 3/4 INTVCC 1.2 25 25 ILIM = 1/2 INTVCC ILIM = 1/2 INTVCC 1.0 20 20 ILIM = 1/4 INTVCC ILIM = 1/4 INTVCC 0.8 15 15 TK/SS (µA) 0.6 I ILIM = 0V 10 LIM = 0V 10 0.4 CURRENT SENSE THRESHOLD (mV) 5 5 0.2 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 0.1 0.2 0.3 0.4 0.5 0.6 –50 –25 0 25 50 75 100 125 VSENSE COMMON MODE VOLTAGE (V) FEEDBACK VOLTAGE (V) TEMPERATURE (°C) 7130 G13 7130 G14 7130 G15
Shutdown (RUN) Threshold Regulated Feedback Voltage Oscillator Frequency vs Temperature vs Temperature vs Temperature
1.40 601.5 600 VFREQ = 1.2V 1.35 575 601.0 1.30 550 600.5 1.25 ON 525 1.20 600.0 500 OFF 1.15 475 599.5 FREQUENCY (kHz) RUN THRESHOLD (V) 1.10 450 599.0 1.05 REGULATED FEEDBACK VOLTAGE (mV) 425 1.00 598.5 400 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 7130 G16 7130 G17 7130 G18 7130fb 6 For more information www.linear.com/LTC7130 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Application Related Parts .34579 Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Tracking Up and Down with Current Sense Threshold TK/SS External Ramp INTVCC Line Regulation vs ITH Voltage CC
6 40 VTK/SS ILIM = 0V 35 V I TK/SS LIM = 1/4 INTVCC 0.2V/DIV 5 V 30 ILIM = 1/2 INTVCC OUT ILIM = 3/4 INTVCC 25 ILIM = INTVCC VOUT 0.5V/DIV 4 20 TAGE (V) 15 0V VOL 2 10 V CC INT 5 20ms/DIV 7130 G10 VIN = 12V 1 0 VOUT = 1.5V CURRENT SENSE THRESHOLD (mV) 1Ω LOAD –5 0 –10 0 5 10 15 20 0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 INPUT VOLTAGE (V) VITH (V) 7130 G11 7130 G12
Maximum Current Sense Maximum Current Sense Threshold Threshold Voltage vs Feedback TK/SS Pull-Up Current vs Common Mode Voltage Voltage (Current Foldback) vs Temperature
40 40 1.8 35 35 1.6 ILIM = INTVCC ILIM = INTVCC 30 30 1.4 ILIM = 3/4 INTVCC ILIM = 3/4 INTVCC 1.2 25 25 ILIM = 1/2 INTVCC ILIM = 1/2 INTVCC 1.0 20 20 ILIM = 1/4 INTVCC ILIM = 1/4 INTVCC 0.8 15 15 TK/SS (µA) 0.6 I ILIM = 0V 10 LIM = 0V 10 0.4 CURRENT SENSE THRESHOLD (mV) 5 5 0.2 0 MAXIMUM CURRENT SENSE THRESHOLD (mV) 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0 0.1 0.2 0.3 0.4 0.5 0.6 –50 –25 0 25 50 75 100 125 VSENSE COMMON MODE VOLTAGE (V) FEEDBACK VOLTAGE (V) TEMPERATURE (°C) 7130 G13 7130 G14 7130 G15
Shutdown (RUN) Threshold Regulated Feedback Voltage Oscillator Frequency vs Temperature vs Temperature vs Temperature
1.40 601.5 600 VFREQ = 1.2V 1.35 575 601.0 1.30 550 600.5 1.25 ON 525 1.20 600.0 500 OFF 1.15 475 599.5 FREQUENCY (kHz) RUN THRESHOLD (V) 1.10 450 599.0 1.05 REGULATED FEEDBACK VOLTAGE (mV) 425 1.00 598.5 400 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 7130 G16 7130 G17 7130 G18 7130fb 6 For more information www.linear.com/LTC7130 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Application Related Parts .34579 Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts
