Datasheet LTC3856 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp |
| Pages / Page | 40 / 8 — Typical perForMance characTerisTics. Shutdown (RUN) Threshold. Regulated … |
| File Format / Size | PDF / 840 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Shutdown (RUN) Threshold. Regulated Feedback Voltage. Oscillator Frequency. vs Temperature
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LTC3856
Typical perForMance characTerisTics Shutdown (RUN) Threshold Regulated Feedback Voltage Oscillator Frequency vs Temperature vs Temperature vs Temperature
1.25 0.605 900 VFREQ = INTVCC 0.604 800 ON 700 TAGE (mV) 0.603 1.20 600 VFREQ = 1.2V TAGE (V) 0.602 500 0.601 400 1.15 FREQUENCY (kHz) 300 VFREQ = GND RUN PIN VOL TED FEEDBACK VOL 0.600 200 OFF 0.599 REGULA 100 1.10 0.598 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3856 G15 3856 G16 3856 G17
Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current (INTVCC) vs Temperature vs Input Voltage vs Input Voltage
520 60 ) (V) 4.0 V CC ON 50 3.8 510 40 3.6 500 30 3.4 FREQUENCY (kHz) 20 INPUT CURRENT (µA) OFF 490 TAGE LOCKOUT THRESHOLD (INT 3.2 10 VOL 480 0 3.0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 UNDER –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) INPUT VOLTAGE (V) TEMPERATURE (°C) 3856 G20 3856 G19 3856 G18
Quiescent Current vs Temperature Shutdown Current vs Temperature without EXTVCC
70 6 60 5 50 4 40 3 30 2 20 SHUTDOWN CURRENT (µA) QUIESCENT CURRENT (mA) 1 10 0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3856 G21 3856 G22 3856fa 8 For more information www.linear.com/LTC3856 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions FUNCTIONAL Diagram Operation Applications Information Typical Application Typical Application Related Parts
Typical perForMance characTerisTics Shutdown (RUN) Threshold Regulated Feedback Voltage Oscillator Frequency vs Temperature vs Temperature vs Temperature
1.25 0.605 900 VFREQ = INTVCC 0.604 800 ON 700 TAGE (mV) 0.603 1.20 600 VFREQ = 1.2V TAGE (V) 0.602 500 0.601 400 1.15 FREQUENCY (kHz) 300 VFREQ = GND RUN PIN VOL TED FEEDBACK VOL 0.600 200 OFF 0.599 REGULA 100 1.10 0.598 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3856 G15 3856 G16 3856 G17
Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current (INTVCC) vs Temperature vs Input Voltage vs Input Voltage
520 60 ) (V) 4.0 V CC ON 50 3.8 510 40 3.6 500 30 3.4 FREQUENCY (kHz) 20 INPUT CURRENT (µA) OFF 490 TAGE LOCKOUT THRESHOLD (INT 3.2 10 VOL 480 0 3.0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 40 UNDER –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) INPUT VOLTAGE (V) TEMPERATURE (°C) 3856 G20 3856 G19 3856 G18
Quiescent Current vs Temperature Shutdown Current vs Temperature without EXTVCC
70 6 60 5 50 4 40 3 30 2 20 SHUTDOWN CURRENT (µA) QUIESCENT CURRENT (mA) 1 10 0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3856 G21 3856 G22 3856fa 8 For more information www.linear.com/LTC3856 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions FUNCTIONAL Diagram Operation Applications Information Typical Application Typical Application Related Parts
