Datasheet LTC3403 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 1.5MHz, 600mA Synchronous Step-Down Regulator with Bypass Transistor |
| 页数 / 页 | 16 / 3 — ELECTRICAL CHARACTERISTICS. Note 1:. Note 4:. Note 2:. Note 5:. Note 3:. … |
| 文件格式/大小 | PDF / 950 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 1a)
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LTC3403
ELECTRICAL CHARACTERISTICS Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 4:
When VREF > 1.2V and VREF x3 > VIN, the P-channel FET will be on of a device may be impaired. in parallel with the bypass PFET reducing the overall RDS(ON).
Note 2:
The LTC3403E is guaranteed to meet performance specifications
Note 5:
This IC includes overtemperature protection that is intended to from 0°C to 70°C. Specifications over the –40°C to 85°C operating protect the device during momentary overload conditions. Junction temperature range are assured by design, characterization and correlation temperature will exceed 125°C when overtemperature protection is active. 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: LTC3403: TJ = TA + (PD)(43°C/W)
W U TYPICAL PERFOR A CE CHARACTERISTICS (From Figure 1a) Efficiency vs VIN Efficiency vs VOUT Efficiency vs Output Current
100 100 100 100mA BURST 95 MODE 0PERATION 90 IL = 100mA VIN = 3.6V 90 90 80 IL = 300mA VIN = 4.2V 85 100mA FORCED 70 I 80 V L = 600mA CONTINUOUS MODE IN = 3.6V VIN = 4.2V 80 60 75 70 50 600mA FORCED 70 40 TA = 25°C CONTINUOUS MODE EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) FORCED 60 65 30 CONTINUOUS IL = 10mA MODE 60 20 Burst Mode 50 55 TA = 25°C 10 OPERATION V V IN = 3.6V OUT = 1.2V 50 40 0 2.5 3.0 3.5 4.0 4.5 0 1 2 3 4 0.1 1 10 100 1000 VIN (V) V OUTPUT CURRENT (mA) OUT (V) 3403 GO1a 3403 G02 3403 G01
Oscillator Frequency Efficiency vs Output Current Efficiency vs Output Current vs Temperature
100 100 1.70 VIN = 3.6V V 90 V IN = 3.6V IN = 3.6V 90 1.65 80 80 VIN = 4.2V VIN = 4.2V 1.60 70 70 VIN = 3.6V VIN = 4.2V 60 1.55 60 VIN = 3.6V VIN = 4.2V 50 50 1.50 40 TA = 25°C 40 TA = 25°C 1.45 EFFICIENCY (%) FORCED EFFICIENCY (%) FORCED 30 CONTINUOUS 30 FREQUENCY (MHz) CONTINUOUS MODE 1.40 MODE 20 20 Burst Mode Burst Mode 1.35 10 OPERATION 10 OPERATION VOUT = 1.5V VOUT = 2.5V 0 0 1.30 0.1 1 10 100 1000 0.1 1 10 100 1000 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3403 G03 3403 G04 3403 G05 3403f 3
ELECTRICAL CHARACTERISTICS Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 4:
When VREF > 1.2V and VREF x3 > VIN, the P-channel FET will be on of a device may be impaired. in parallel with the bypass PFET reducing the overall RDS(ON).
Note 2:
The LTC3403E is guaranteed to meet performance specifications
Note 5:
This IC includes overtemperature protection that is intended to from 0°C to 70°C. Specifications over the –40°C to 85°C operating protect the device during momentary overload conditions. Junction temperature range are assured by design, characterization and correlation temperature will exceed 125°C when overtemperature protection is active. 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: LTC3403: TJ = TA + (PD)(43°C/W)
W U TYPICAL PERFOR A CE CHARACTERISTICS (From Figure 1a) Efficiency vs VIN Efficiency vs VOUT Efficiency vs Output Current
100 100 100 100mA BURST 95 MODE 0PERATION 90 IL = 100mA VIN = 3.6V 90 90 80 IL = 300mA VIN = 4.2V 85 100mA FORCED 70 I 80 V L = 600mA CONTINUOUS MODE IN = 3.6V VIN = 4.2V 80 60 75 70 50 600mA FORCED 70 40 TA = 25°C CONTINUOUS MODE EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) FORCED 60 65 30 CONTINUOUS IL = 10mA MODE 60 20 Burst Mode 50 55 TA = 25°C 10 OPERATION V V IN = 3.6V OUT = 1.2V 50 40 0 2.5 3.0 3.5 4.0 4.5 0 1 2 3 4 0.1 1 10 100 1000 VIN (V) V OUTPUT CURRENT (mA) OUT (V) 3403 GO1a 3403 G02 3403 G01
Oscillator Frequency Efficiency vs Output Current Efficiency vs Output Current vs Temperature
100 100 1.70 VIN = 3.6V V 90 V IN = 3.6V IN = 3.6V 90 1.65 80 80 VIN = 4.2V VIN = 4.2V 1.60 70 70 VIN = 3.6V VIN = 4.2V 60 1.55 60 VIN = 3.6V VIN = 4.2V 50 50 1.50 40 TA = 25°C 40 TA = 25°C 1.45 EFFICIENCY (%) FORCED EFFICIENCY (%) FORCED 30 CONTINUOUS 30 FREQUENCY (MHz) CONTINUOUS MODE 1.40 MODE 20 20 Burst Mode Burst Mode 1.35 10 OPERATION 10 OPERATION VOUT = 1.5V VOUT = 2.5V 0 0 1.30 0.1 1 10 100 1000 0.1 1 10 100 1000 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) TEMPERATURE (°C) 3403 G03 3403 G04 3403 G05 3403f 3