Datasheet LTC3778 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Wide Operating Range, No RSENSE Step-Down Controller |
| 页数 / 页 | 24 / 6 — TYPICAL PERFOR A CE CHARACTERISTICS. Input and Shutdown Currents. EXTVCC … |
| 文件格式/大小 | PDF / 312 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS. Input and Shutdown Currents. EXTVCC Switch Resistance. vs Input Voltage
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LTC3778
W U TYPICAL PERFOR A CE CHARACTERISTICS Input and Shutdown Currents EXTVCC Switch Resistance vs Input Voltage INTVCC Load Regulation vs Temperature
1200 60 0 10 EXTVCC OPEN ) 1000 50 SHUTDOWN CURRENT ( Ω –0.1 8 µA) 800 40 6 SHUTDOWN –0.2 (%) 600 30 CC ∆INTV –0.3 4 400 20 SWITCH RESISTANCE ( INPUT CURRENT ( µA) CC 2 200 10 –0.4 EXTV EXTVCC = 5V 0 0 –0.5 0 0 5 10 15 20 25 30 35 0 10 20 30 40 50 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) INTV TEMPERATURE (°C) CC LOAD CURRENT (mA) 3778 G24 3778 G25 3778 G14
RUN/SS Pin Current FCB Pin Current vs Temperature vs Temperature
0 3 –0.25 2 µA) µA) PULL-DOWN CURRENT –0.50 1 –0.75 0 –1.00 FCB PIN CURRENT ( PULL-UP CURRENT RUN/SS PIN CURRENT ( –1 –1.25 –1.50 –2 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3778 G16 3778 G15
RUN/SS Latchoff Thresholds Undervoltage Lockout Threshold vs Temperature vs Temperature
5.0 4.0 4.5 3.5 LATCHOFF ENABLE 4.0 3.0 RUN/SS THRESHOLD (V) 3.5 2.5 LATCHOFF THRESHOLD UNDERVOLTAGE LOCKOUT THRESHOLD (V) 3.0 2.0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (C) 3778 G17 3778 G18 3778f 6
W U TYPICAL PERFOR A CE CHARACTERISTICS Input and Shutdown Currents EXTVCC Switch Resistance vs Input Voltage INTVCC Load Regulation vs Temperature
1200 60 0 10 EXTVCC OPEN ) 1000 50 SHUTDOWN CURRENT ( Ω –0.1 8 µA) 800 40 6 SHUTDOWN –0.2 (%) 600 30 CC ∆INTV –0.3 4 400 20 SWITCH RESISTANCE ( INPUT CURRENT ( µA) CC 2 200 10 –0.4 EXTV EXTVCC = 5V 0 0 –0.5 0 0 5 10 15 20 25 30 35 0 10 20 30 40 50 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) INTV TEMPERATURE (°C) CC LOAD CURRENT (mA) 3778 G24 3778 G25 3778 G14
RUN/SS Pin Current FCB Pin Current vs Temperature vs Temperature
0 3 –0.25 2 µA) µA) PULL-DOWN CURRENT –0.50 1 –0.75 0 –1.00 FCB PIN CURRENT ( PULL-UP CURRENT RUN/SS PIN CURRENT ( –1 –1.25 –1.50 –2 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3778 G16 3778 G15
RUN/SS Latchoff Thresholds Undervoltage Lockout Threshold vs Temperature vs Temperature
5.0 4.0 4.5 3.5 LATCHOFF ENABLE 4.0 3.0 RUN/SS THRESHOLD (V) 3.5 2.5 LATCHOFF THRESHOLD UNDERVOLTAGE LOCKOUT THRESHOLD (V) 3.0 2.0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (C) 3778 G17 3778 G18 3778f 6