Datasheet LTC3601 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 1.5A, 15V Monolithic Synchronous Step-Down Regulator |
| 页数 / 页 | 26 / 4 — ELECTRICAL CHARACTERISTICS Note 1:. Note 3:. Note 2:. Note 4:. TYPICAL … |
| 文件格式/大小 | PDF / 421 Kb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS Note 1:. Note 3:. Note 2:. Note 4:. TYPICAL PERFORMANCE CHARACTERISTICS
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LTC3601
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings conditions in conjunction with board layout, the rated package thermal may cause permanent damage to the device. Exposure to any Absolute impedance and other environmental factors. Maximum Rating condition for extended periods may affect device
Note 3:
TJ is calculated from the ambient temperature, TA, and power reliability and lifetime. dissipation, PD, according to the following formula:
Note 2:
The LTC3601 is tested under pulsed load conditions such that TJ = TA + (PD • θJA) TJ ≈ TA. The LTC3601E is guaranteed to meet specifications from where θ 0°C to 85°C junction temperature. Specifications over the –40°C to JA = 45°C/W for the QFN package and θJA = 38°C/W for the MSOP package. 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The
Note 4:
Maximum allowed current draw when used as a regulated output LTC3601I is guaranteed over the full –40°C to 125°C operating junction is 5mA. This supply is only intended to provide additional DC load current temperature range. Note that the maximum ambient temperature as needed and not intended to regulate large transient or AC behavior as consistent with these specifications is determined by specific operating these waveforms may impact LTC3601 operation.
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, fO = 1MHz, L = 2.2µH unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Burst Mode Operation Forced Continuous Mode Efficiency vs Load Current
100 100 100 VOUT = 1.8V V 90 OUT = 1.8V 90 90 BURST 80 80 80 70 70 70 FORCED 60 60 60 CONTINUOUS 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 V 20 20 IN = 4V VIN = 4V 10 VIN = 8V 10 VIN = 8V 10 VOUT = 3.3V VIN = 12V VIN = 12V VOUT = 5V 0 0 0 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3601 G01 3601 G02 3601 G03
Efficiency vs Input Voltage Efficiency vs Frequency Reference Voltage vs Burst Mode Operation Forced Continuous Mode Temperature
100 92 0.605 VOUT =1.8V 95 I I LOAD = 500mA LOAD = 100mA 90 0.603 90 ILOAD = 500mA 85 88 I L = 2.2µH LOAD = 1.5A 0.601 (V) 80 86 ILOAD = 10mA L = 1µH V REF 0.599 EFFICIENCY (%) 75 EFFICIENCY (%) 84 70 0.597 82 65 VOUT = 1.8V FIGURE 7 CIRCUIT 60 80 0.595 4 6 8 10 12 14 16 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) FREQUENCY (MHz) TEMPERATURE (°C) 3601 G04 3601 G05 3601 G06 3601fc 4 For more information www.linear.com/LTC3601 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Related Parts
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings conditions in conjunction with board layout, the rated package thermal may cause permanent damage to the device. Exposure to any Absolute impedance and other environmental factors. Maximum Rating condition for extended periods may affect device
Note 3:
TJ is calculated from the ambient temperature, TA, and power reliability and lifetime. dissipation, PD, according to the following formula:
Note 2:
The LTC3601 is tested under pulsed load conditions such that TJ = TA + (PD • θJA) TJ ≈ TA. The LTC3601E is guaranteed to meet specifications from where θ 0°C to 85°C junction temperature. Specifications over the –40°C to JA = 45°C/W for the QFN package and θJA = 38°C/W for the MSOP package. 125°C operating junction temperature range are assured by design, characterization and correlation with statistical process controls. The
Note 4:
Maximum allowed current draw when used as a regulated output LTC3601I is guaranteed over the full –40°C to 125°C operating junction is 5mA. This supply is only intended to provide additional DC load current temperature range. Note that the maximum ambient temperature as needed and not intended to regulate large transient or AC behavior as consistent with these specifications is determined by specific operating these waveforms may impact LTC3601 operation.
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 12V, fO = 1MHz, L = 2.2µH unless otherwise noted. Efficiency vs Load Current Efficiency vs Load Current Burst Mode Operation Forced Continuous Mode Efficiency vs Load Current
100 100 100 VOUT = 1.8V V 90 OUT = 1.8V 90 90 BURST 80 80 80 70 70 70 FORCED 60 60 60 CONTINUOUS 50 50 50 40 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 30 30 30 20 V 20 20 IN = 4V VIN = 4V 10 VIN = 8V 10 VIN = 8V 10 VOUT = 3.3V VIN = 12V VIN = 12V VOUT = 5V 0 0 0 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 0.001 0.01 0.1 1 10 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 3601 G01 3601 G02 3601 G03
Efficiency vs Input Voltage Efficiency vs Frequency Reference Voltage vs Burst Mode Operation Forced Continuous Mode Temperature
100 92 0.605 VOUT =1.8V 95 I I LOAD = 500mA LOAD = 100mA 90 0.603 90 ILOAD = 500mA 85 88 I L = 2.2µH LOAD = 1.5A 0.601 (V) 80 86 ILOAD = 10mA L = 1µH V REF 0.599 EFFICIENCY (%) 75 EFFICIENCY (%) 84 70 0.597 82 65 VOUT = 1.8V FIGURE 7 CIRCUIT 60 80 0.595 4 6 8 10 12 14 16 0.5 1.0 1.5 2.0 2.5 3.0 –50 –25 0 25 50 75 100 125 INPUT VOLTAGE (V) FREQUENCY (MHz) TEMPERATURE (°C) 3601 G04 3601 G05 3601 G06 3601fc 4 For more information www.linear.com/LTC3601 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Related Parts