Datasheet LTC3875 (Analog Devices) - 8
| Hersteller | Analog Devices |
| Beschreibung | Dual, 2-Phase, Synchronous Controller with Low Value DCR Sensing and Temperature Compensation |
| Seiten / Seite | 46 / 8 — TYPICAL PERFORMANCE CHARACTERISTICS. Undervoltage Lockout Threshold. … |
| Dateiformat / Größe | PDF / 997 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFORMANCE CHARACTERISTICS. Undervoltage Lockout Threshold. Oscillator Frequency. Shutdown Current
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LTC3875
TYPICAL PERFORMANCE CHARACTERISTICS Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current (INTVCC) vs Temperature vs Input Voltage vs Input Voltage
5.0 900 50 4.8 800 VFREQ = INTVCC 45 4.6 40 RISING 700 4.4 35 600 4.2 VFREQ = 1.22V 30 500 4.0 FALLING 25 400 3.8 20 300 VFREQ = GND UVLO THRESHOLD (V) 3.6 15 3.4 200 SHUTDOWN CURRENT (µA) OSCILLATOR FREQUENCY (kHz) 10 3.2 100 5 3.0 0 0 –50 0 50 100 150 0 10 20 30 40 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3875 G18 3875 G19 3875 G20
Quiescent Current vs Input Shutdown Current vs Temperature Voltage without EXTVCC Very Low Output Voltage Ripple
50 8 VOUT 45 7 TYPICAL FRONT PAGE 40 6 10mV/DIV AC-COUPLED 35 5 30 4 VOUT LOW RIPPLE 25 3 FIGURE 20 10mV/DIV SHUTDOWN CURRENT (µA) 20 QUIESCENT CURRENT (mA) 2 AC-COUPLED 15 1 2µs/DIV 3875 G23 VIN = 12V V 10 0 OUT = 2.5V –50 –30 –10 10 30 50 70 90 110 130 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) INPUT VOLTAGE (V) 3875 G21 3875 G22 3875fb 8 For more information www.linear.com/LTC3875 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Undervoltage Lockout Threshold Oscillator Frequency Shutdown Current (INTVCC) vs Temperature vs Input Voltage vs Input Voltage
5.0 900 50 4.8 800 VFREQ = INTVCC 45 4.6 40 RISING 700 4.4 35 600 4.2 VFREQ = 1.22V 30 500 4.0 FALLING 25 400 3.8 20 300 VFREQ = GND UVLO THRESHOLD (V) 3.6 15 3.4 200 SHUTDOWN CURRENT (µA) OSCILLATOR FREQUENCY (kHz) 10 3.2 100 5 3.0 0 0 –50 0 50 100 150 0 10 20 30 40 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3875 G18 3875 G19 3875 G20
Quiescent Current vs Input Shutdown Current vs Temperature Voltage without EXTVCC Very Low Output Voltage Ripple
50 8 VOUT 45 7 TYPICAL FRONT PAGE 40 6 10mV/DIV AC-COUPLED 35 5 30 4 VOUT LOW RIPPLE 25 3 FIGURE 20 10mV/DIV SHUTDOWN CURRENT (µA) 20 QUIESCENT CURRENT (mA) 2 AC-COUPLED 15 1 2µs/DIV 3875 G23 VIN = 12V V 10 0 OUT = 2.5V –50 –30 –10 10 30 50 70 90 110 130 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) INPUT VOLTAGE (V) 3875 G21 3875 G22 3875fb 8 For more information www.linear.com/LTC3875 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Related Parts