Datasheet LTC3406B-1.2 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT |
| 页数 / 页 | 12 / 3 — ELECTRICAL CHARACTERISTICS. Note 1:. Note 4:. Note 2:. Note 5:. Note 3:. … |
| 文件格式/大小 | PDF / 276 Kb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. Note 1:. Note 4:. Note 2:. Note 5:. Note 3:. TYPICAL PERFOR A CE CHARACTERISTICS. (From Figure 1)
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LTC3406B-1.2
ELECTRICAL CHARACTERISTICS Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 4:
Dynamic supply current is higher due to the gate charge being of a device may be impaired. delivered at the switching frequency.
Note 2:
The LTC3406BE-1.2 is guaranteed to meet performance
Note 5:
This IC includes overtemperature protection that is intended to specifications from 0°C to 70°C. Specifications over the –40°C to 85°C protect the device during momentary overload conditions. Junction operating temperature range are assured by design, characterization and temperature will exceed 125°C when overtemperature protection is active. correlation with statistical process controls. Continuous operation above the specified maximum operating junction
Note 3:
T temperature may impair device reliability. J is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC3406B-1.2: TJ = TA + (PD)(250°C/W)
W U TYPICAL PERFOR A CE CHARACTERISTICS (From Figure 1) Reference Voltage vs Efficiency vs Input Voltage Efficiency vs Output Current Temperature
95 100 1.228 VOUT = 1.2V VIN = 3.6V 90 T I 90 A = 25°C V OUT = 100mA IN = 2.7V 1.218 85 80 80 IOUT = 600mA 70 1.208 VIN = 3.6V 75 60 1.198 70 IOUT = 10mA 50 VIN = 4.2V EFFICIENCY (%) 65 EFFICIENCY (%) 40 1.188 REFERENCE VOLTAGE (V) 60 30 1.178 55 20 50 10 1.168 2 3 4 5 6 –50 –25 0 25 50 75 100 125 0.1 1 10 100 1000 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3406B12 G01 3406B12 G03 3406B12 GO2
Oscillator Frequency vs Oscillator Frequency vs Temperature Supply Voltage Output Voltage vs Load Current
1.70 1.8 1.224 VIN = 3.6V TA = 25°C 1.65 1.7 1.214 1.60 1.6 1.55 1.204 1.50 1.5 1.45 1.194 FREQUENCY (MHz) 1.4 1.40 OUTPUT VOLTAGE (V) 1.184 OSCILLATOR FREQUENCY (MHz) 1.35 1.3 1.30 1.2 1.174 –50 –25 0 25 50 75 100 125 2 3 4 5 6 0 100 200 300 400 500 600 700 800 900 1000 TEMPERATURE (°C) SUPPLY VOLTAGE (V) LOAD CURRENT (mA) 3406B12 G05 3406B12 G04 3406B12 G06 sn3406b12 3406b12fs 3
ELECTRICAL CHARACTERISTICS Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 4:
Dynamic supply current is higher due to the gate charge being of a device may be impaired. delivered at the switching frequency.
Note 2:
The LTC3406BE-1.2 is guaranteed to meet performance
Note 5:
This IC includes overtemperature protection that is intended to specifications from 0°C to 70°C. Specifications over the –40°C to 85°C protect the device during momentary overload conditions. Junction operating temperature range are assured by design, characterization and temperature will exceed 125°C when overtemperature protection is active. correlation with statistical process controls. Continuous operation above the specified maximum operating junction
Note 3:
T temperature may impair device reliability. J is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC3406B-1.2: TJ = TA + (PD)(250°C/W)
W U TYPICAL PERFOR A CE CHARACTERISTICS (From Figure 1) Reference Voltage vs Efficiency vs Input Voltage Efficiency vs Output Current Temperature
95 100 1.228 VOUT = 1.2V VIN = 3.6V 90 T I 90 A = 25°C V OUT = 100mA IN = 2.7V 1.218 85 80 80 IOUT = 600mA 70 1.208 VIN = 3.6V 75 60 1.198 70 IOUT = 10mA 50 VIN = 4.2V EFFICIENCY (%) 65 EFFICIENCY (%) 40 1.188 REFERENCE VOLTAGE (V) 60 30 1.178 55 20 50 10 1.168 2 3 4 5 6 –50 –25 0 25 50 75 100 125 0.1 1 10 100 1000 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3406B12 G01 3406B12 G03 3406B12 GO2
Oscillator Frequency vs Oscillator Frequency vs Temperature Supply Voltage Output Voltage vs Load Current
1.70 1.8 1.224 VIN = 3.6V TA = 25°C 1.65 1.7 1.214 1.60 1.6 1.55 1.204 1.50 1.5 1.45 1.194 FREQUENCY (MHz) 1.4 1.40 OUTPUT VOLTAGE (V) 1.184 OSCILLATOR FREQUENCY (MHz) 1.35 1.3 1.30 1.2 1.174 –50 –25 0 25 50 75 100 125 2 3 4 5 6 0 100 200 300 400 500 600 700 800 900 1000 TEMPERATURE (°C) SUPPLY VOLTAGE (V) LOAD CURRENT (mA) 3406B12 G05 3406B12 G04 3406B12 G06 sn3406b12 3406b12fs 3