Datasheet LTC3779 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller |
| Pages / Page | 38 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS. Oscillator Frequency. NDRV LDO vs … |
| Revision | A |
| File Format / Size | PDF / 2.6 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Oscillator Frequency. NDRV LDO vs Temperature. VIN LDO vs Temperature. vs Temperature
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LTC3779
TYPICAL PERFORMANCE CHARACTERISTICS Oscillator Frequency NDRV LDO vs Temperature VIN LDO vs Temperature vs Temperature
12 12 800 FREQ = V5 11 11 700 DRVSET = V5, VIN = 11V 600 10 10 DRVSET = V5, V DRVSET = 3/4 • V5, V IN = 11V IN = 10V 500 RFREQ = 120k 9 9 DRVSET = 3/4 • V5, VIN = 10V DRVSET = 1/2 • V5, VIN = 9V 400 VCC (V) 8 VCC (V) DR 8 DRVSET = 1/2 • V5, V DR IN = 9V DRVSET = 1/4 • V5, V 300 R IN = 8V FREQ = 67.5k 7 7 DRVSET = 1/4 • V5, VIN = 8V 200 DRVSET = GND, VIN = 7V SWITCHING FREQUENCY (kHz) 6 6 DRVSET = GND, VIN = 7V RFREQ = 27.5k FREQ = GND 100 5 5 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) EXTV 3779 G36 3779 G38 CC = 0V 3779 G37
Frequency Setting Current Input Supply Current vs Temperature vs Temperature
20.5 5 20.4 20.3 4 20.2 20.1 3 (µA) 20.0 I FREQ 19.9 Y CURRENT (mA) 2 19.8 SUPPL 19.7 1 19.6 19.5 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) V 3779 G39 3779 G40 FREQ = 0.8V
Soft-Start Pull-Up Current RUN Threshold vs Temperature vs Temperature
1.4 5.2 ON OFF 1.3 5.1 1.2 1.1 5.0 RUN THRESHOLD (V) 1.0 SS PULL–UP CURRENT (µA) 0.9 4.9 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3779 G41 3779 G42 Rev A 10 For more information www.analog.com 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 PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS Oscillator Frequency NDRV LDO vs Temperature VIN LDO vs Temperature vs Temperature
12 12 800 FREQ = V5 11 11 700 DRVSET = V5, VIN = 11V 600 10 10 DRVSET = V5, V DRVSET = 3/4 • V5, V IN = 11V IN = 10V 500 RFREQ = 120k 9 9 DRVSET = 3/4 • V5, VIN = 10V DRVSET = 1/2 • V5, VIN = 9V 400 VCC (V) 8 VCC (V) DR 8 DRVSET = 1/2 • V5, V DR IN = 9V DRVSET = 1/4 • V5, V 300 R IN = 8V FREQ = 67.5k 7 7 DRVSET = 1/4 • V5, VIN = 8V 200 DRVSET = GND, VIN = 7V SWITCHING FREQUENCY (kHz) 6 6 DRVSET = GND, VIN = 7V RFREQ = 27.5k FREQ = GND 100 5 5 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) EXTV 3779 G36 3779 G38 CC = 0V 3779 G37
Frequency Setting Current Input Supply Current vs Temperature vs Temperature
20.5 5 20.4 20.3 4 20.2 20.1 3 (µA) 20.0 I FREQ 19.9 Y CURRENT (mA) 2 19.8 SUPPL 19.7 1 19.6 19.5 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) V 3779 G39 3779 G40 FREQ = 0.8V
Soft-Start Pull-Up Current RUN Threshold vs Temperature vs Temperature
1.4 5.2 ON OFF 1.3 5.1 1.2 1.1 5.0 RUN THRESHOLD (V) 1.0 SS PULL–UP CURRENT (µA) 0.9 4.9 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 3779 G41 3779 G42 Rev A 10 For more information www.analog.com 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 PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
