Datasheet LTC3890 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller |
| Seiten / Seite | 40 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. TRACK/SS Pull-Up Current. Shutdown … |
| Dateiformat / Größe | PDF / 935 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. TRACK/SS Pull-Up Current. Shutdown (RUN) Threshold. Regulated Feedback Voltage
Textversion des Dokuments
LTC3890
TYPICAL PERFORMANCE CHARACTERISTICS TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.10 1.40 808 1.35 806 1.05 1.30 RUN1 RISING 804 RUN2 RISING 1.25 802 1.00 1.20 800 1.15 RUN1 FALLING 798 RUN PIN VOLTAGE (V) 1.10 RUN2 FALLING 796 TRACK/SS CURRENT (µA) 0.95 1.05 REGULATED FEEDBACK VOLTAGE (mV) 794 0.90 1.00 792 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3890 G21 3890 G19 3890 G20
SENSE– Pin Total Input Bias Current Shutdown Current Oscillator Frequency vs Temperature vs Input Voltage vs Temperature
800 30 600 700 V FREQ = INTV OUT > INTVCC + 0.5V 25 550 CC 600 500 20 500 400 15 450 300 – CURRENT (µA) 200 10 FREQUENCY (kHz) 400 SENSE 100 SHUTDOWN CURRENT (µA) FREQ = GND VOUT < INTVCC – 0.5V 5 0 350 –100 0 –75 –50 –25 0 25 50 75 100 125 150 300 5 10 15 20 25 30 35 40 45 50 55 60 65 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3890 G22 3890 G23 3890 G24
Undervoltage Lockout Threshold Oscillator Frequency vs Temperature vs Input Voltage Shutdown Current vs Temperature
4.2 356 22 FREQ = GND VIN = 12V 4.1 354 20 18 4.0 352 RISING 16 3.9 350 VOLTAGE (V) 14 CC FALLING TOR FREQUENCY (kHz) 3.8 348 INTV 12 SHUTDOWN CURRENT (µA) 3.7 OSCILLA 346 10 3.6 344 8 –75 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 40 45 50 55 60 65 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3890 G25 3890 G26 3890 G27 3890fc 7 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 Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TRACK/SS Pull-Up Current Shutdown (RUN) Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
1.10 1.40 808 1.35 806 1.05 1.30 RUN1 RISING 804 RUN2 RISING 1.25 802 1.00 1.20 800 1.15 RUN1 FALLING 798 RUN PIN VOLTAGE (V) 1.10 RUN2 FALLING 796 TRACK/SS CURRENT (µA) 0.95 1.05 REGULATED FEEDBACK VOLTAGE (mV) 794 0.90 1.00 792 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3890 G21 3890 G19 3890 G20
SENSE– Pin Total Input Bias Current Shutdown Current Oscillator Frequency vs Temperature vs Input Voltage vs Temperature
800 30 600 700 V FREQ = INTV OUT > INTVCC + 0.5V 25 550 CC 600 500 20 500 400 15 450 300 – CURRENT (µA) 200 10 FREQUENCY (kHz) 400 SENSE 100 SHUTDOWN CURRENT (µA) FREQ = GND VOUT < INTVCC – 0.5V 5 0 350 –100 0 –75 –50 –25 0 25 50 75 100 125 150 300 5 10 15 20 25 30 35 40 45 50 55 60 65 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3890 G22 3890 G23 3890 G24
Undervoltage Lockout Threshold Oscillator Frequency vs Temperature vs Input Voltage Shutdown Current vs Temperature
4.2 356 22 FREQ = GND VIN = 12V 4.1 354 20 18 4.0 352 RISING 16 3.9 350 VOLTAGE (V) 14 CC FALLING TOR FREQUENCY (kHz) 3.8 348 INTV 12 SHUTDOWN CURRENT (µA) 3.7 OSCILLA 346 10 3.6 344 8 –75 –50 –25 0 25 50 75 100 125 150 5 10 15 20 25 30 35 40 45 50 55 60 65 –75 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) INPUT VOLTAGE (V) TEMPERATURE (°C) 3890 G25 3890 G26 3890 G27 3890fc 7 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 Applications Package Description Revision History Typical Application Related Parts