Datasheet LTC3315A (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | Dual 5V, 2A Synchronous Step-Down DC/DCs in 2mm × 2mm LQFN |
| 页数 / 页 | 24 / 4 — ELECTRICAL CHARACTERISTICS. Note 3:. Note 4:. Note 5:. Note 6: |
| 修订版 | A |
| 文件格式/大小 | PDF / 2.0 Mb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. Note 3:. Note 4:. Note 5:. Note 6:
该数据表的模型线
- LTC3315AEV#TRMPBF LTC3315AEV#TRPBF LTC3315AEV#WTRMPBF LTC3315AEV#WTRPBF LTC3315AHV#TRMPBF LTC3315AHV#TRPBF LTC3315AHV#WTRMPBF LTC3315AHV#WTRPBF LTC3315AIV#TRMPBF LTC3315AIV#TRPBF LTC3315AIV#WTRMPBF LTC3315AIV#WTRPBF LTC3315AJV#TRMPBF LTC3315AJV#TRPBF LTC3315AJV#WTRMPBF LTC3315AJV#WTRPBF LTC3315AMPV#TRMPBF LTC3315AMPV#TRPBF
文件文字版本
LTC3315A
ELECTRICAL CHARACTERISTICS
characterization, and correlation with statistical process controls. The where θJA (in °C/W) is the package thermal impedance. See High LTC3315AI is guaranteed over the –40°C to 125°C operating junction Temperature Considerations section for more details. temperature range, the LTC3315AJ and the LTC3315AH are guaranteed
Note 3:
The LTC3315A includes overtemperature protection which over the –40°C to 150°C operating junction temperature range, and the protects the device during momentary overload conditions. Junction LTC3315AMP is guaranteed over the –55°C to 150°C operating junction temperatures will exceed 150°C when overtemperature protection is temperature range. High junction temperatures degrade operating active. Continuous operation above the specified maximum operating lifetimes; operating lifetime is derated for junction temperatures greater junction temperature may impair device reliability. than 125°C. Note that the maximum ambient temperature consistent
Note 4:
Static current, switches not switching. Actual current will be with these specifications is determined by specific operating conditions higher due to gate charge losses at the switching frequency. in conjunction with board layout, the rated package thermal impedance, and other environmental factors. The junction temperature (T
Note 5:
Overtemperature shutdown is not tested in production. J in °C) is calculated from ambient temperature (T
Note 6:
The soft-start time is the time from the start of switching until the A in °C) and power dissipation (PD in Watts) according to the formula: FB pin reaches 475mV. TJ = TA + (PD • θJA)
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless otherwise noted. VFB vs Temperature PMOS RDS(ON) vs Temperature NMOS RDS(ON) vs Temperature
510 150 50 V V 508 IN = 2.25V IN = 2.25V V 45 IN = 3.3V VIN = 3.3V 125 506 VIN = 5.5V V 40 IN = 5.5V 504 35 100 502 30 (mΩ) (mΩ) (mV) 500 75 25 V FB 498 R DS(ON) 20 R DS(ON) 50 496 15 494 10 25 492 5 490 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3315 G01 3315ab G02 3315ab G03
NMOS, PMOS Leakage vs Oscillator Frequency vs Temperature Temperature Oscillator Frequency vs VIN
3.2 2.20 2.20 NMOS, VIN = 5.5V, SW = 5.5V VIN = 5.5V 2.8 NMOS, V 2.16 2.16 IN = 3.3V, SW = 3.3V VIN = 3.3V PMOS, VIN = 5.5V, SW = 0V V 2.12 IN = 2.25V 2.12 2.4 PMOS, VIN = 3.3V, SW = 0V 2.08 2.08 2.0 2.04 2.04 1.6 2.00 2.00 1.96 1.96 LEAKAGE (µA) 1.2 FREQUENCY (MHz) 1.92 FREQUENCY (MHz) 1.92 0.8 1.88 1.88 0.4 1.84 1.84 0 1.80 1.80 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 2 2.5 3 3.5 4 4.5 5 5.5 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3315ab G04 3315aba G05 3315ab G06 Rev. A 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
ELECTRICAL CHARACTERISTICS
characterization, and correlation with statistical process controls. The where θJA (in °C/W) is the package thermal impedance. See High LTC3315AI is guaranteed over the –40°C to 125°C operating junction Temperature Considerations section for more details. temperature range, the LTC3315AJ and the LTC3315AH are guaranteed
Note 3:
The LTC3315A includes overtemperature protection which over the –40°C to 150°C operating junction temperature range, and the protects the device during momentary overload conditions. Junction LTC3315AMP is guaranteed over the –55°C to 150°C operating junction temperatures will exceed 150°C when overtemperature protection is temperature range. High junction temperatures degrade operating active. Continuous operation above the specified maximum operating lifetimes; operating lifetime is derated for junction temperatures greater junction temperature may impair device reliability. than 125°C. Note that the maximum ambient temperature consistent
Note 4:
Static current, switches not switching. Actual current will be with these specifications is determined by specific operating conditions higher due to gate charge losses at the switching frequency. in conjunction with board layout, the rated package thermal impedance, and other environmental factors. The junction temperature (T
Note 5:
Overtemperature shutdown is not tested in production. J in °C) is calculated from ambient temperature (T
Note 6:
The soft-start time is the time from the start of switching until the A in °C) and power dissipation (PD in Watts) according to the formula: FB pin reaches 475mV. TJ = TA + (PD • θJA)
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VIN = 3.3V, unless otherwise noted. VFB vs Temperature PMOS RDS(ON) vs Temperature NMOS RDS(ON) vs Temperature
510 150 50 V V 508 IN = 2.25V IN = 2.25V V 45 IN = 3.3V VIN = 3.3V 125 506 VIN = 5.5V V 40 IN = 5.5V 504 35 100 502 30 (mΩ) (mΩ) (mV) 500 75 25 V FB 498 R DS(ON) 20 R DS(ON) 50 496 15 494 10 25 492 5 490 0 0 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3315 G01 3315ab G02 3315ab G03
NMOS, PMOS Leakage vs Oscillator Frequency vs Temperature Temperature Oscillator Frequency vs VIN
3.2 2.20 2.20 NMOS, VIN = 5.5V, SW = 5.5V VIN = 5.5V 2.8 NMOS, V 2.16 2.16 IN = 3.3V, SW = 3.3V VIN = 3.3V PMOS, VIN = 5.5V, SW = 0V V 2.12 IN = 2.25V 2.12 2.4 PMOS, VIN = 3.3V, SW = 0V 2.08 2.08 2.0 2.04 2.04 1.6 2.00 2.00 1.96 1.96 LEAKAGE (µA) 1.2 FREQUENCY (MHz) 1.92 FREQUENCY (MHz) 1.92 0.8 1.88 1.88 0.4 1.84 1.84 0 1.80 1.80 –50 –25 0 25 50 75 100 125 150 –50 –25 0 25 50 75 100 125 150 2 2.5 3 3.5 4 4.5 5 5.5 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3315ab G04 3315aba G05 3315ab G06 Rev. A 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts