Datasheet LTC3801, LTC3801B (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | Micropower Constant Frequency Step-Down DC/DC Controllers in ThinSOT |
| Seiten / Seite | 12 / 3 — TYPICAL PERFOR A CE CHARACTERISTICS. Input DC Supply Current (Normal). … |
| Dateiformat / Größe | PDF / 243 Kb |
| Dokumentensprache | Englisch |
TYPICAL PERFOR A CE CHARACTERISTICS. Input DC Supply Current (Normal). Input DC Supply Current (SLEEP)
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LTC3801/LTC3801B
W U TYPICAL PERFOR A CE CHARACTERISTICS Input DC Supply Current (Normal) Input DC Supply Current (SLEEP) Input DC Supply Current vs Input Voltage vs Input Voltage (LTC3801 Only) (Shutdown) vs Input Voltage
225 20 15 TA = 25°C TA = 25°C TA = 25°C VITH/RUN = 1.3V VITH/RUN = 0V 215 18 12 205 16 LTC3801B 9 µA) µA) µA) ( I IN I IN I IN LTC3801 195 14 6 185 12 3 175 10 0 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 VIN (V) VIN (V) VIN (V) 3801 G01 3801 G02 3801 G03
Undervoltage Lockout Threshold Shutdown Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
2.2 800 812 VIN = 4.2V VIN = 4.2V 2.0 808 700 VIN RISING 804 1.8 (V) 600 IN VIN FALLING (mV) 800 V /RUN (mV) FB 1.6 V ITHV 796 500 1.4 792 1.2 400 788 –50 –30 –10 10 30 50 70 90 –50 –30 –10 10 30 50 70 90 –50 –30 –10 10 30 50 80 90 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3801 G04 3801 G05 3801 G06
Regulated Feedback Voltage Oscillator Frequency Oscillator Frequency vs Input Voltage vs Temperature vs Input Voltage
812 600 560 TA = 25°C VIN = 4.2V TA = 25°C 590 808 580 555 570 804 560 (mV) 800 (kHz) 550 (kHz) 550 FBV f OSC 540 f OSC 796 530 545 520 792 510 788 500 540 2 3 4 5 6 7 8 9 10 –50 –30 –10 10 30 50 70 90 2 3 4 5 6 7 8 9 10 VIN (V) TEMPERATURE (°C) VIN (V) 3801 G07 3801 G08 3801 G09 sn3801 3801fs 3
W U TYPICAL PERFOR A CE CHARACTERISTICS Input DC Supply Current (Normal) Input DC Supply Current (SLEEP) Input DC Supply Current vs Input Voltage vs Input Voltage (LTC3801 Only) (Shutdown) vs Input Voltage
225 20 15 TA = 25°C TA = 25°C TA = 25°C VITH/RUN = 1.3V VITH/RUN = 0V 215 18 12 205 16 LTC3801B 9 µA) µA) µA) ( I IN I IN I IN LTC3801 195 14 6 185 12 3 175 10 0 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 2 3 4 5 6 7 8 9 10 VIN (V) VIN (V) VIN (V) 3801 G01 3801 G02 3801 G03
Undervoltage Lockout Threshold Shutdown Threshold Regulated Feedback Voltage vs Temperature vs Temperature vs Temperature
2.2 800 812 VIN = 4.2V VIN = 4.2V 2.0 808 700 VIN RISING 804 1.8 (V) 600 IN VIN FALLING (mV) 800 V /RUN (mV) FB 1.6 V ITHV 796 500 1.4 792 1.2 400 788 –50 –30 –10 10 30 50 70 90 –50 –30 –10 10 30 50 70 90 –50 –30 –10 10 30 50 80 90 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3801 G04 3801 G05 3801 G06
Regulated Feedback Voltage Oscillator Frequency Oscillator Frequency vs Input Voltage vs Temperature vs Input Voltage
812 600 560 TA = 25°C VIN = 4.2V TA = 25°C 590 808 580 555 570 804 560 (mV) 800 (kHz) 550 (kHz) 550 FBV f OSC 540 f OSC 796 530 545 520 792 510 788 500 540 2 3 4 5 6 7 8 9 10 –50 –30 –10 10 30 50 70 90 2 3 4 5 6 7 8 9 10 VIN (V) TEMPERATURE (°C) VIN (V) 3801 G07 3801 G08 3801 G09 sn3801 3801fs 3