Datasheet LTC3777 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller + Switching Bias Supply |
| Pages / Page | 40 / 10 — TYPICAL PERFORMANCE CHARACTERISTICS. Oscillator Frequency. Frequency … |
| Revision | A |
| File Format / Size | PDF / 2.8 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Oscillator Frequency. Frequency Setting Current. VIN LDO vs Temperature. vs Temperature
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Text Version of Document
LTC3777
TYPICAL PERFORMANCE CHARACTERISTICS Oscillator Frequency Frequency Setting Current VIN LDO vs Temperature vs Temperature vs Temperature
12 800 20.5 FREQ = V5 VFREQ = 0.8V 20.4 11 700 20.3 600 10 DRVSET = V5, VIN = 11V 20.2 500 RFREQ = 120k 9 DRVSET = 3/4 • V5, V 20.1 IN = 10V 400 (µA) 20.0 VCC (V) 8 DRVSET = 1/2 • V5, V DR IN = 9V 300 I FREQ R 19.9 FREQ = 67.5k 7 DRVSET = 1/4 • V5, VIN = 8V 19.8 200 SWITCHING FREQUENCY (kHz) 19.7 6 DRVSET = GND, VIN = 7V RFREQ = 27.5k FREQ = GND 100 19.6 5 0 19.5 –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) 3777 G36 3777 G37 3777 G38
Input Supply Current Soft-Start Pull-Up Current vs Temperature RUN Threshold vs Temperature vs Temperature
5 1.4 5.2 ON OFF 4 1.3 5.1 3 1.2 Y CURRENT (mA) 2 1.1 5.0 SUPPL RUN THRESHOLD (V) 1 1.0 SS PULL–UP CURRENT (µA) 0 0.9 4.9 –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) 3777 G39 3777 G40 3777 G41 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 TYPICAL PERFORMANCE CHARACTERISTICS – SWITCHING BIAS SUPPLY PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
TYPICAL PERFORMANCE CHARACTERISTICS Oscillator Frequency Frequency Setting Current VIN LDO vs Temperature vs Temperature vs Temperature
12 800 20.5 FREQ = V5 VFREQ = 0.8V 20.4 11 700 20.3 600 10 DRVSET = V5, VIN = 11V 20.2 500 RFREQ = 120k 9 DRVSET = 3/4 • V5, V 20.1 IN = 10V 400 (µA) 20.0 VCC (V) 8 DRVSET = 1/2 • V5, V DR IN = 9V 300 I FREQ R 19.9 FREQ = 67.5k 7 DRVSET = 1/4 • V5, VIN = 8V 19.8 200 SWITCHING FREQUENCY (kHz) 19.7 6 DRVSET = GND, VIN = 7V RFREQ = 27.5k FREQ = GND 100 19.6 5 0 19.5 –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) 3777 G36 3777 G37 3777 G38
Input Supply Current Soft-Start Pull-Up Current vs Temperature RUN Threshold vs Temperature vs Temperature
5 1.4 5.2 ON OFF 4 1.3 5.1 3 1.2 Y CURRENT (mA) 2 1.1 5.0 SUPPL RUN THRESHOLD (V) 1 1.0 SS PULL–UP CURRENT (µA) 0 0.9 4.9 –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) 3777 G39 3777 G40 3777 G41 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 TYPICAL PERFORMANCE CHARACTERISTICS – SWITCHING BIAS SUPPLY PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
