Datasheet LTC3417A-1 (Analog Devices) - 4
| Fabricante | Analog Devices |
| Descripción | Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator with POR |
| Páginas / Página | 20 / 4 — ELECTRICAL CHARACTERISTICS. Note 1:. Note 5:. Note 6:. Note 2:. Note 7:. … |
| Formato / tamaño de archivo | PDF / 353 Kb |
| Idioma del documento | Inglés |
ELECTRICAL CHARACTERISTICS. Note 1:. Note 5:. Note 6:. Note 2:. Note 7:. Note 8:. Note 3:. Note 4:. TYPICAL PERFORMANCE CHARACTERISTICS
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LTC3417A-1
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5:
Switch on-resistance is guaranteed by design and test correlation may cause permanent damage to the device. Exposure to any Absolute on the DHC package and by fi nal test correlation on the FE package. Maximum Rating condition for extended periods may affect device
Note 6:
Variable frequency operation with resistor is guaranteed by design reliability and lifetime. but not production tested and is subject to duty cycle limitations.
Note 2:
The LTC3417AE-1 is guaranteed to meet specifi ed performance
Note 7:
This IC includes overtemperature protection that is intended from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating to protect the device during momentary overload conditions. Junction ambient temperature range are assured by design, characterization temperature will exceed 125°C when overtemperature protection is active. and correlation with statistical process controls. The LTC3417AI-1 is Continuous operation above the specifi ed maximum operating junction guaranteed to meet performance specifi cations over the –40°C to 125°C temperature may impair device reliability. operating temperature range.
Note 8:
TJ is calculated from the ambient temperature, TA, and power
Note 3:
The LTC3417A-1 is tested in feedback loop which servos VFB1 to dissipation, PD, according to the following formula: the midpoint for the error amplifi er (VITH1 = 0.6V) and VFB2 to the midpoint LTC3417AEDHC-1: TJ = TA + (PD • 43°C/W) for the error amplifi er (VITH2 = 0.6V). LTC3417AEFE-1: TJ = TA + (PD • 38°C/W)
Note 4:
Total supply current is higher due to the internal gate charge being delivered at the switching frequency.
TYPICAL PERFORMANCE CHARACTERISTICS OUT1 Pulse Skipping OUT1 Forced Continuous OUT1 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417A-1 G01 VIN = 3.6V 2μs/DIV 3417A-1 G02 VIN = 3.6V 2μs/DIV 3417A-1 G03 VIN = 3.6V 2μs/DIV VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 100mA ILOAD = 100mA ILOAD = 100mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4
OUT2 Pulse Skipping OUT2 Forced Continuous OUT2 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417A-1 G04 VIN = 3.6V 2μs/DIV 3417A-1 G05 VIN = 3.6V 2μs/DIV 3417A-1 G06 VIN = 3.6V 2μs/DIV VOUT = 2.5V VOUT = 2.5V VOUT = 2.5V ILOAD = 60mA ILOAD = 60mA ILOAD = 60mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4 3417a1fa 4
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5:
Switch on-resistance is guaranteed by design and test correlation may cause permanent damage to the device. Exposure to any Absolute on the DHC package and by fi nal test correlation on the FE package. Maximum Rating condition for extended periods may affect device
Note 6:
Variable frequency operation with resistor is guaranteed by design reliability and lifetime. but not production tested and is subject to duty cycle limitations.
Note 2:
The LTC3417AE-1 is guaranteed to meet specifi ed performance
Note 7:
This IC includes overtemperature protection that is intended from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating to protect the device during momentary overload conditions. Junction ambient temperature range are assured by design, characterization temperature will exceed 125°C when overtemperature protection is active. and correlation with statistical process controls. The LTC3417AI-1 is Continuous operation above the specifi ed maximum operating junction guaranteed to meet performance specifi cations over the –40°C to 125°C temperature may impair device reliability. operating temperature range.
Note 8:
TJ is calculated from the ambient temperature, TA, and power
Note 3:
The LTC3417A-1 is tested in feedback loop which servos VFB1 to dissipation, PD, according to the following formula: the midpoint for the error amplifi er (VITH1 = 0.6V) and VFB2 to the midpoint LTC3417AEDHC-1: TJ = TA + (PD • 43°C/W) for the error amplifi er (VITH2 = 0.6V). LTC3417AEFE-1: TJ = TA + (PD • 38°C/W)
Note 4:
Total supply current is higher due to the internal gate charge being delivered at the switching frequency.
TYPICAL PERFORMANCE CHARACTERISTICS OUT1 Pulse Skipping OUT1 Forced Continuous OUT1 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417A-1 G01 VIN = 3.6V 2μs/DIV 3417A-1 G02 VIN = 3.6V 2μs/DIV 3417A-1 G03 VIN = 3.6V 2μs/DIV VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V ILOAD = 100mA ILOAD = 100mA ILOAD = 100mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4
OUT2 Pulse Skipping OUT2 Forced Continuous OUT2 Burst Mode Operation Mode Operation Mode Operation
VOUT VOUT VOUT 20mV/DIV 20mV/DIV 20mV/DIV IL IL IL 250mA/DIV 250mA/DIV 250mA/DIV 3417A-1 G04 VIN = 3.6V 2μs/DIV 3417A-1 G05 VIN = 3.6V 2μs/DIV 3417A-1 G06 VIN = 3.6V 2μs/DIV VOUT = 2.5V VOUT = 2.5V VOUT = 2.5V ILOAD = 60mA ILOAD = 60mA ILOAD = 60mA REFER TO FIGURE 4 REFER TO FIGURE 4 REFER TO FIGURE 4 3417a1fa 4