Datasheet LT3682 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 1A Micropower Step-Down Switching Regulator |
| 页数 / 页 | 24 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. … |
| 文件格式/大小 | PDF / 265 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Effi ciency (VOUT = 5V, SYNC = 0V)
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LT3682
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Effi ciency (VOUT = 5V, SYNC = 0V) Effi ciency (VOUT = 3.3V, SYNC = 0V) Effi ciency (VOUT = 3.3V, SYNC = 0V)
90 90 100 1 VIN = 12V VIN = 12V 80 80 90 80 70 70 70 0.1 60 60 60 50 VIN = 34V 50 VIN = 34V 50 40 EFFICIENCY (%) 40 V EFFICIENCY (%) V EFFICIENCY (%) IN = 24V IN = 24V 40 0.01 POWER LOSS(W) 30 30 V 30 IN = 12V VOUT = 3.3V 20 L = 10μH 20 L = 10μH 20 L = 10μH f = 800kHz f = 800kHz f = 800kHz 10 10 10 0.001 0.1 1 10 100 1000 0.1 1 10 100 1000 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3682 G01 3682 G02 3682 G03
No Load Supply Current No Load Supply Current Maximum Load Current
120 1000 1.75 VOUT = 3.3V CATCH DIODE: DIODES, INC. B150 TYPICAL 900 VIN = 12V 100 1.5 800 VOUT = 3.3V 700 80 1.25 600 INCREASED SUPPLY CURRENT DUE TO CATCH DIODE LEAKAGE 60 500 1 AT HIGH TEMPERATURE Y CURRENT (μA) Y CURRENT (μA) 400 40 0.75 300 LOAD CURRENT (A) MINIMUM SUPPL SUPPL 20 200 0.5 VOUT = 3.3V L = 10μH 100 SYNC = 0V f = 800kHz SYNC = 3.3V 0 0 0.25 0 5 10 15 20 25 30 35 40 50 25 0 25 50 75 100 125 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE(V) TEMPERATURE(°C) INPUT VOLTAGE (V) 3682 G04 3682 G05 3682 G06
Maximum Load Current Maximum Load Current Maximum Load Current
1.5 1.5 1.75 TYPICAL TYPICAL TYPICAL 1.5 1.25 1.25 1.25 1 1 1 0.75 0.75 0.75 LOAD CURRENT (A) MINIMUM LOAD CURRENT (A) MINIMUM LOAD CURRENT (A) MINIMUM 0.5 V 0.5 OUT = 5V VOUT = 5V V 0.50 OUT = 1.8V SYNC = 0V L = 10μH L = 4.7μH SYNC = 0V L = 10μH SYNC = 0V SYNC = 5V f = 800kHz f = 2MHz SYNC = 5V f = 500kHz SYNC = 3.3V 0.25 0.25 0.25 5 10 15 20 25 30 35 40 8 10 12 14 16 18 20 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3682 G07 3682 G08 3682 G09 3682f 4
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Effi ciency (VOUT = 5V, SYNC = 0V) Effi ciency (VOUT = 3.3V, SYNC = 0V) Effi ciency (VOUT = 3.3V, SYNC = 0V)
90 90 100 1 VIN = 12V VIN = 12V 80 80 90 80 70 70 70 0.1 60 60 60 50 VIN = 34V 50 VIN = 34V 50 40 EFFICIENCY (%) 40 V EFFICIENCY (%) V EFFICIENCY (%) IN = 24V IN = 24V 40 0.01 POWER LOSS(W) 30 30 V 30 IN = 12V VOUT = 3.3V 20 L = 10μH 20 L = 10μH 20 L = 10μH f = 800kHz f = 800kHz f = 800kHz 10 10 10 0.001 0.1 1 10 100 1000 0.1 1 10 100 1000 0.1 1 10 100 1000 LOAD CURRENT (mA) LOAD CURRENT (mA) LOAD CURRENT (mA) 3682 G01 3682 G02 3682 G03
No Load Supply Current No Load Supply Current Maximum Load Current
120 1000 1.75 VOUT = 3.3V CATCH DIODE: DIODES, INC. B150 TYPICAL 900 VIN = 12V 100 1.5 800 VOUT = 3.3V 700 80 1.25 600 INCREASED SUPPLY CURRENT DUE TO CATCH DIODE LEAKAGE 60 500 1 AT HIGH TEMPERATURE Y CURRENT (μA) Y CURRENT (μA) 400 40 0.75 300 LOAD CURRENT (A) MINIMUM SUPPL SUPPL 20 200 0.5 VOUT = 3.3V L = 10μH 100 SYNC = 0V f = 800kHz SYNC = 3.3V 0 0 0.25 0 5 10 15 20 25 30 35 40 50 25 0 25 50 75 100 125 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE(V) TEMPERATURE(°C) INPUT VOLTAGE (V) 3682 G04 3682 G05 3682 G06
Maximum Load Current Maximum Load Current Maximum Load Current
1.5 1.5 1.75 TYPICAL TYPICAL TYPICAL 1.5 1.25 1.25 1.25 1 1 1 0.75 0.75 0.75 LOAD CURRENT (A) MINIMUM LOAD CURRENT (A) MINIMUM LOAD CURRENT (A) MINIMUM 0.5 V 0.5 OUT = 5V VOUT = 5V V 0.50 OUT = 1.8V SYNC = 0V L = 10μH L = 4.7μH SYNC = 0V L = 10μH SYNC = 0V SYNC = 5V f = 800kHz f = 2MHz SYNC = 5V f = 500kHz SYNC = 3.3V 0.25 0.25 0.25 5 10 15 20 25 30 35 40 8 10 12 14 16 18 20 0 5 10 15 20 25 30 35 40 INPUT VOLTAGE (V) INPUT VOLTAGE (V) INPUT VOLTAGE (V) 3682 G07 3682 G08 3682 G09 3682f 4